Terminal, wireless communication method, base station and system

Abstract

A terminal according to an aspect of the present disclosure comprises: a reception unit that receives one or more transmission configuration indication (TCI) state lists for the downlink and uplink of one or more cells in a plurality of cells and that receives the instructions of one or more TCI states in the one or more TCI state lists; and a control unit that applies the one or more TCI states to some or all of the plurality of cells. According to an aspect of the present disclosure, TCI state / PL-RS / TPC parameters for a plurality of cells / CCs can be appropriately determined.

Description

[Technical Field]

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

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

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

[0004] [Non-Patent Document 1] 3GPP TS 36.300 V8.12.0 “Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Overall description; Stage 2 (Release 8)”, April 2010 Summary of the Invention [Problem to be solved by the invention]

[0005] In future wireless communication systems (e.g., NR), it is being considered that user terminals (terminals, user terminals, User Equipment (UE)) will control transmission and reception processing based on information about quasi-co-location (QCL) (QCL assumptions / Transmission Configuration Indication (TCI) states / spatial relationships).

[0006] The application of the configured / activated / instructed TCI state to multiple types of signals (channels / RSs) has been studied. However, there has been insufficient study on how to determine the TCI state / path loss reference signal (PL-RS) / transmit power control (TPC) parameters for multiple cells / component carriers (CCs). If the determination method is inappropriate, it may result in degradation of communication quality and throughput.

[0007] Therefore, the present disclosure provides a terminal and a radio communication method that appropriately determine TCI states / PL-RS / TPC parameters for multiple cells / CCs. 、 base station and systems One of the aims is to provide [Means for solving the problem]

[0008] A terminal according to one embodiment of the present disclosure includes: a receiver that receives a list including a plurality of cells, a downlink transmission configuration indication (DL TCI) state list, and an uplink TCI (UL TCI) state list by RRC signaling; a Medium Access Control Control Element (MAC CE) that activates at least one DL TCI state and one UL TCI state in the DL TCI state list and the UL TCI state list; and a controller that applies the one or two TCI states indicated by the DCI to the plurality of cells, wherein one of the MAC CEs activates at least one of the DL TCI state and at least one of the UL TCI state. The DL TCI state list and the UL TCI state list are specific to each of the plurality of cells, and the at least one DL TCI state and the UL TCI state indicated by the DCI among the DL TCI state list and the UL TCI state list specific to each of the plurality of cells indicates a reference signal common to the plurality of cells. do. [Effects of the Invention]

[0009] According to one aspect of the present disclosure, it is possible to appropriately determine the TCI state / PL-RS / TPC parameters for multiple cells / CCs. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 1 is a diagram illustrating an example of simultaneous beam updating for multiple CCs. [Figure 2] 2A and 2B are diagrams illustrating an example of a unified / common TCI framework. [Figure 3] 3A and 3B are diagrams showing an example of a CC-specific TCI state pool and a CC-common TCI state pool. [Figure 4] 4A and 4B are diagrams showing an example of a TCI state in a CC-specific TCI state pool. [Figure 5] 5A and 5B are diagrams showing an example of TCI states in a CC common TCI state pool. [Figure 6] 6A and 6B are diagrams illustrating an example of a CC-specific RS in a TCI state. [Figure 7] 7A and 7B are diagrams showing an example of a CC common RS in a TCI state. [Figure 8] 8A and 8B are diagrams illustrating an example of CC-specific RSs in a separate TCI status pool. [Figure 9] 9A and 9B are diagrams showing an example of a CC common RS in a separate TCI state pool. [Figure 10] 10A and 10B are diagrams showing an example of the association between TCI codepoints and TCI states. [Figure 11] 11A and 11B are diagrams illustrating an example of a CC-specific PL-RS. [Figure 12] 12A and 12B are diagrams illustrating an example of a CC common PL-RS. [Figure 13] 13A and 13B are diagrams showing an example of new QCL information. [Figure 14] FIG. 14 is a diagram showing another example of new QCL information. [Figure 15] FIG. 15 is a diagram illustrating an example of a schematic configuration of a wireless communication system according to an embodiment. [Figure 16] FIG. 16 is a diagram illustrating an example of the configuration of a base station according to an embodiment. [Figure 17] FIG. 17 is a diagram illustrating an example of the configuration of a user terminal according to an embodiment. [Figure 18] FIG. 18 is a diagram illustrating an example of the hardware configuration of a base station and a user terminal according to an embodiment. [Figure 19] FIG. 19 is a diagram illustrating an example of a vehicle according to an embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0011] (TCI, spatial relations, QCL) In NR, it is being considered to control the reception processing (e.g., at least one of reception, demapping, demodulation, and decoding) and transmission processing (e.g., at least one of transmission, mapping, precoding, modulation, and encoding) in the UE of at least one of a signal and a channel (referred to as signal / channel) based on the transmission configuration indication state (TCI state).

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

[0013] The TCI state is information about the quasi-co-location (QCL) of signals / channels, and may also be called spatial reception parameters, spatial relation information, etc. The TCI state may be configured in the UE for each channel or signal.

[0014] A QCL is an index that indicates the statistical properties of a signal / channel. For example, if a signal / channel has a QCL relationship with another signal / channel, it may mean that it can be assumed that at least one of the Doppler shift, Doppler spread, average delay, delay spread, and spatial parameter (e.g., spatial Rx parameter) is the same between these different signals / channels (i.e., they are QCLs with respect to at least one of these).

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

[0016] A plurality of types (QCL types) of QCLs may be defined. For example, four QCL types A and B may be provided, each having different parameters (or parameter sets) that can be assumed to be the same. The parameters (which may also be referred to as QCL parameters) are listed below: QCL Type A (QCL-A): Doppler shift, Doppler spread, mean delay and delay spread, QCL Type B (QCL-B): Doppler shift and Doppler spread, QCL Type C (QCL-C): Doppler shift and mean delay, · QCL Type D (QCL-D): Spatial reception parameters.

[0017] The assumption by a UE that a Control Resource Set (CORESET), channel, or reference signal has a specific QCL (e.g., QCL type D) relationship with another CORESET, channel, or reference signal may be referred to as a QCL assumption.

[0018] The UE may determine at least one of a transmit beam (Tx beam) and a receive beam (Rx beam) for a signal / channel based on the TCI condition or QCL assumption of the signal / channel.

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

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

[0021] The channel for which the TCI state or spatial relationship is set (specified) may be, for example, at least one of a downlink shared channel (Physical Downlink Shared Channel (PDSCH)), a downlink control channel (Physical Downlink Control Channel (PDCCH)), an uplink shared channel (Physical Uplink Shared Channel (PUSCH)), and an uplink control channel (Physical Uplink Control Channel (PUCCH)).

[0022] Furthermore, the RS that has a QCL relationship with the channel may be, for example, at least one of a Synchronization Signal Block (SSB), a Channel State Information Reference Signal (CSI-RS), a Sounding Reference Signal (SRS), a CSI-RS for tracking (also called a Tracking Reference Signal (TRS)), and a QCL detection reference signal (also called a QRS).

[0023] An SSB is a signal block that includes at least one of a Primary Synchronization Signal (PSS), a Secondary Synchronization Signal (SSS), and a Physical Broadcast Channel (PBCH). An SSB may also be referred to as an SS / PBCH block.

[0024] An RS of QCL type X in a TCI state may refer to an RS that has a relationship of QCL type X with (the DMRS of) a certain channel / signal, and this RS may be called a QCL source of QCL type X in the TCI state.

[0025] (Simultaneous beam update of multiple CCs) In Rel.16, one MAC CE can update the beam index (TCI state) of multiple CCs.

[0026] 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 correspond to in-band CA in FR1 and in-band CA in FR2, respectively.

[0027] The network may activate and deactivate the configured TCI states of a serving cell or of a set of serving cells configured in simultaneous TCI update list 1 (simultaneousTCI-UpdateList1) or simultaneous TCI update list 2 (simultaneousTCI-UpdateList2) by sending a TCI States Activation / Deactivation for UE-specific PDSCH MAC CE. If the indicated serving cell is configured as part of simultaneous TCI update list 1 or simultaneous TCI update list 2, the MAC CE applies to all serving cells configured in the set of simultaneous TCI update list 1 or simultaneous TCI update list 2.

[0028] The network may indicate the configured TCI states of a serving cell or of a set of serving cells configured in simultaneous TCI update list 1 (simultaneousTCI-UpdateList1) or simultaneous TCI update list 2 (simultaneousTCI-UpdateList2) by sending a TCI States Indication for UE-specific PDCCH MAC CE. If the indicated serving cell is configured as part of simultaneous TCI update list 1 or simultaneous TCI update list 2, the MAC CE applies to all serving cells configured in the set of simultaneous TCI update list 1 or simultaneous TCI update list 2.

[0029] Activation of TCI states on PDCCH The MAC CE activates the TCI states associated with the same CORESET ID on all BWP / CCs in the applicable CC list.

[0030] Activation of TCI states for PDSCH The MAC CE activates the TCI states on all BWP / CCs in the applicable CC list.

[0031] A-SRS / SP-SRS Spatial Relationship Activation The MAC CE activates spatial relationships associated with the same SRS resource ID on all BWPs / CCs in the applicable CC list.

[0032] In the example of Figure 1, the UE is configured with an applicable CC list indicating CCs #0, #1, #2, and #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 the MAC CE, the corresponding TCI states are activated in CCs #1, #2, and #3.

[0033] Such simultaneous beam updating is considered applicable only to the single TRP case.

[0034] For PDSCH, the UE may follow procedure A. [Step A] The UE receives activation commands to map up to eight TCI states to codepoints in the DCI field (TCI field) within one CC / DL BWP or within one set of CC / BWPs. If one set of TCI state IDs is activated for one set of CC / DL BWPs, then the applicable list of CCs is determined by the CC indicated in the activation command, and the same set of TCI states applies to all DL BWPs within the indicated CC. A set of TCI state IDs can be activated for one set of CC / DL BWPs only if the UE is not provided with multiple different values ​​of the CORESETPoolIndex in the CORESET information element (ControlResourceSet) and at least one TCI codepoint that maps to two TCI states.

[0035] For PDCCH, the UE may follow procedure B. [Step B] If the UE is provided with up to two lists of cells for simultaneous TCI state activation by the simultaneous TCI cell list (simultaneousTCI-CellList) via the simultaneous TCI update list (at least one of simultaneousTCI-UpdateList-r16 and simultaneousTCI-UpdateListSecond-r16), the UE applies antenna port quasi co-location (QCL) provided by TCI states with the same activated TCI state ID value to the CORESET with index p in all configured DL BWPs of all configured cells in one list determined from the serving cell index provided by the MAC CE command. A simultaneous TCI cell list can be provided for simultaneous TCI state activation only if the UE is not provided with different values ​​of the CORESET pool index (CORESETPoolIndex) in the CORESET information element (ControlResourceSet) and at least one TCI codepoint that maps to two TCI states.

[0036] For semi-persistent (SP) / aperiodic (AP)-SRS, the UE may follow procedure C. [Step C] For one set of CCs / BWPs, when the spatial relationship information (spatialRelationInfo) for the SP or AP-SRS resources configured by the SRS resource information element (higher layer parameter SRS-Resource) is activated / updated by the MAC CE, then the applicable list of the CC is indicated by the simultaneous spatial update list (higher layer parameter simultaneousSpatial-UpdateList-r16 or simultaneousSpatial-UpdateListSecond-r16), and the spatial relationship information is applied to the SP or AP-SRS resources with the same SRS resource ID in all BWPs within the indicated CC. The spatial relation information (spatialRelationInfo) for the SP or AP-SRS resources configured by the SRS resource information element (higher layer parameter SRS-Resource) for one set of CC / BWP is activated / updated by the MAC CE only if the UE is not provided with multiple different values ​​of the CORESET pool index (CORESETPoolIndex) in the CORESET information element (ControlResourceSet) and is not provided with at least one TCI codepoint that maps to two TCI states.

[0037] The simultaneous TCI cell list (simultaneousTCI-CellList) and the simultaneous TCI update list (at least one of simultaneousTCI-UpdateList1-r16 and simultaneousTCI-UpdateList2-r16) are lists of serving cells whose TCI relationships can be updated simultaneously using the MAC CE. simultaneousTCI-UpdateList1-r16 and simultaneousTCI-UpdateList2-r16 do not include the same serving cell.

[0038] 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 the MAC CE. simultaneousSpatial-UpdatedList1-r16 and simultaneousSpatial-UpdatedList2-r16 do not contain the same serving cell.

[0039] Here, the simultaneous TCI update list and the simultaneous spatial update list are configured by the RRC, the CORESET pool index of the CORESET is configured by the RRC, and the TCI codepoint mapped to the TCI state is indicated by the MAC CE.

[0040] In the present disclosure, CC list, new CC list, simultaneous TCI cell list, simultaneousTCI-CellList, simultaneous TCI update list, simultaneousTCI-UpdateList1-r16, simultaneousTCI-UpdateList2-r16, simultaneous spatial update list, simultaneousSpatial-UpdatedList1-r16, simultaneousSpatial-UpdatedList2-r16 may be read as interchangeable.

[0041] In the present disclosure, simultaneousTCI-UpdateList1, simultaneousTCI-UpdateList1-r16, and simultaneousTCI-UpdateList-r16 may be interchangeable. In the present disclosure, simultaneousTCI-UpdateList2, simultaneousTCI-UpdateList2-r16, and simultaneousTCI-UpdateListSecond-r16 may be interchangeable.

[0042] In the present disclosure, simultaneousSpatial-UpdatedList1, simultaneousSpatial-UpdatedList1-r16, and simultaneousSpatial-UpdateList-r16 may be interchangeable. In the present disclosure, simultaneousSpatial-UpdatedList2, simultaneousSpatial-UpdatedList2-r16, and simultaneousSpatial-UpdateListSecond-r16 may be interchangeable.

[0043] (Unified / Common TCI Framework) The unified TCI framework allows UL and DL channels to be controlled by a common framework. Instead of specifying TCI states or spatial relationships for each channel as in Rel. 15, the unified TCI framework may specify a common beam (common TCI state) and apply it to all UL and DL channels, or may apply a common beam for UL to all UL channels and a common beam for DL ​​to all DL channels.

[0044] One common beam for both DL and UL, or one common beam for DL ​​and one common beam for UL (two common beams overall) are considered.

[0045] The UE may assume the same TCI state for UL and DL (joint TCI state, joint TCI pool, joint common TCI pool, joint TCI state set). The UE may assume different TCI states for UL and DL (separate TCI state, separate TCI pool, UL separate TCI pool and DL separate TCI pool, separate common TCI pool, UL common TCI pool and DL common TCI pool).

[0046] The default beams for UL and DL may be aligned via MAC CE based beam management (MAC CE level beam direction). The default TCI state of the PDSCH may be updated to align with the default UL beam (spatial relationship).

[0047] DCI-based beam management (DCI-level beam indication) may indicate a common beam / unified TCI state 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 the MAC CE. The UL / DL DCI may select one from the X active TCI states. The selected TCI state may apply to both UL and DL channels / RS.

[0048] The TCI pool (set) may be multiple TCI states configured by RRC parameters, or multiple TCI states (active TCI states, active TCI pools, sets) activated by the MAC CE among the multiple TCI states configured by RRC parameters. Each TCI state may be a QCL type A / D RS. SSB, CSI-RS, or SRS may be configured as the QCL type A / D RS.

[0049] The number of TCI states corresponding to each of one or more TRPs may be specified. For example, the number N (≧1) of TCI states applied to UL channels / RSs (UL TCI states) and the number M (≧1) of TCI states applied to DL channels / RSs (DL TCI states) may be specified. At least one of N and M may be notified / configured / instructed to the UE via higher layer signaling / physical layer signaling.

[0050] In the present disclosure, when N=M=X (X is any integer), it may mean that X TCI states (joint TCI states) common to UL and DL (corresponding to X TRPs) are notified / configured / instructed to the UE. Also, when N=X (X is any integer) and M=Y (Y may be any integer, Y=X), it may mean that X UL TCI states (corresponding to X TRPs) and Y DL TCI states (i.e., separate TCI states) (corresponding to Y TRPs) are notified / configured / instructed to the UE.

[0051] For example, when N=M=1 is written, this may mean that a TCI state common to one UL and DL for a single TRP is notified / configured / indicated to the UE (joint TCI state for a single TRP).

[0052] Also, for example, when 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 / configured / instructed to the UE (separate TCI states for a single TRP).

[0053] Also, for example, when N=M=2 is written, this may mean that a TCI state common to multiple (two) ULs and DLs for multiple (two) TRPs is notified / configured / instructed to the UE (joint TCI state for multiple TRPs).

[0054] Also, for example, when N=2 and M=2, this may mean that the UE is notified / configured / instructed to have multiple (two) UL TCI states and multiple (two) DL TCI states for multiple (two) TRPs (separate TCI states for multiple TRPs).

[0055] In the above example, the case where the values ​​of N and M are 1 or 2 has been described, but the values ​​of N and M may be 3 or more, and N and M may be different.

[0056] In the example of Figure 2A, RRC parameters (information elements) configure multiple TCI states for both DL and UL. The MAC CE may activate multiple TCI states from the configured multiple TCI states. The DCI may indicate one of the activated multiple TCI states. The DCI may be a UL / DL DCI. The indicated TCI state may apply to at least one (or all) of the UL / DL channels / RS. One DCI may indicate both UL TCI and DL TCI.

[0057] In the example of this figure, one point may be one TCI state that applies to both UL and DL, or two TCI states that apply to UL and DL respectively.

[0058] At least one of the multiple TCI states configured by the RRC parameters and the multiple TCI states activated by the MAC CE may be referred to as a TCI pool (common TCI pool, joint TCI pool, TCI state pool). The multiple TCI states activated by the MAC CE may be referred to as an active TCI pool (active common TCI pool).

[0059] In the present disclosure, higher layer parameters (RRC parameters) for setting multiple TCI states may be referred to as configuration information for setting multiple TCI states, or simply as "configuration information." Also, in the present disclosure, being instructed to set one of multiple TCI states using DCI may mean receiving indication information instructing one of the multiple TCI states included in DCI, or simply receiving "instruction information."

[0060] In the example of Figure 2B, the RRC parameters configure multiple TCI states (joint common TCI pools) for both DL and UL. The MAC CE may activate multiple TCI states (active TCI pools) from the configured multiple TCI states. Separate active TCI pools for UL and DL may be configured / activated.

[0061] The DL DCI or a new DCI format may select (indicate) 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 channels may be PDCCH / PDSCH / CSI-RS. The UE may determine the TCI state of each DL channel / RS using the TCI state behavior (TCI framework) of Rel. 16. The UL DCI or a new DCI format may select (indicate) one or more (e.g., one) TCI states. The selected TCI state may be applied to one or more (or all) UL channels / RSs. The UL channels may be PUSCH / SRS / PUCCH. In this way, different DCIs may indicate the UL TCI and the DL DCI separately.

[0062] The existing DCI formats 1_1 / 1_2 may be used to indicate the common TCI status.

[0063] The common TCI framework may have separate TCI states for DL ​​and UL.

[0064] In the present disclosure, the terms TCI state pool, TCI state list, unified TCI state pool, joint TCI state pool, separate TCI state pool, separate DL / UL TCI state pool, DL TCI state pool, UL TCI state pool, separate DL TCI state pool, and separate UL TCI state pool may be read interchangeably.

[0065] (PL-RS / transmission power control (TPC) parameters) In path loss measurements for the unified TCI framework, it is considered that the pathloss reference signal (PL-RS) (configured for path loss calculation) is included in or associated with the UL TCI state or (if applicable) the joint TCI state.

[0066] It is considered that for each BWP, a setting of P0 / alpha / closed-loop index is associated with a UL TCI state or (if applicable) a joint TCI state for PUSCH and PUCCH. In this case, multiple settings are configured. Each setting can be associated with at least one TCI state. For a given TCI state, only one setting for PUSCH and only one setting for PUCCH can be associated at a time.

[0067] For the unified TCI framework, it is considered that the settings of UL power control (PC) parameters (P0 / alpha / closed loop index) for SRS, excluding PL-RS, are associated with the UL TCI state or (if applicable) the joint TCI state.

[0068] That is, for the unified TCI framework, it is considered that TPC parameters (P0 / alpha / closed-loop index) except for PL-RS are associated with the UL TCI state for PUCCH / PUSCH / SRS or (if applicable) the joint TCI state, and that the settings of P0 / alpha / closed-loop index are configured separately for PUCCH / PUSCH / SRS.

[0069] In the present disclosure, the TPC parameters and UL PC parameters may be interchangeable. In the present disclosure, the TPC parameters excluding PL-RS, P0 / alpha / closed-loop index may be interchangeable.

[0070] (Unified TCI Framework for Carrier Aggregation (CA)) The introduction of a unified TCI state framework for CA is being considered for NR Rel. 17 and later. The common TCI state indicated to the UE is expected to be common across CCs (cells) (at least between CCs, QCL type D). This is because the existing specifications (Rel. 15 / 16) do not support simultaneous reception of different DL channels / RSs in QCL type D, or simultaneous transmission of UL channels / RSs with different spatial relationships, except for cases such as transmission and reception using multiple TRPs.

[0071] In addition, in the unified TCI framework, common TCI state ID update / activation is being considered to provide common QCL information / common UL transmit spatial filter across a set of configured CCs.

[0072] The following options 1 and 2 are being considered for the TCI state pool for CA.

[0073] [Option 1] A single TCI state pool configured by RRC for a set of configured multiple CCs (cells) / BWPs may be shared (configured). 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 may be no CC (cell) ID for the QCL type-A RS, and the CC (cell) ID for the QCL type-A RS may be determined according to the target CC (cell) of the TCI state.

[0074] In Option 1, since a common TCI state pool is set 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 preset CC / BWP list).

[0075] [Option 2] For each individual CC, a TCI state pool may be set by RRC.

[0076] In Option 2, similar to Rel.16, a CC / BWP list for applying simultaneous beam updates is preset by RRC. When beam updates are performed by MAC CE / DCI in any CC / BWP included in the CC / BWP list, the updates may be applied to all CCs / BWPs.

[0077] In Option 1, a common TCI state pool is set (shared) for multiple CCs by RRC. The TCI states within the common TCI state pool are indicated by common TCI state IDs, and one RS determined based on that TCI state will be used to indicate QCL type D across the set of the configured multiple CCs (Constraint 1).

[0078] In Option 2, an individual common TCI state pool is set for each CC by RRC. The TCI states within the common state pool are indicated by common TCI state IDs, and one RS determined based on that TCI state will be used to indicate QCL type D across the set of the configured multiple CCs (Constraint 2).

[0079] (Transmission Power Control) <PUSCH Transmission Power Control> In NR, the transmission power of PUSCH is controlled based on the TPC command (also referred to as values such as increase / decrease values, correction values, etc.) indicated by the value of the field in DCI (also called the TPC command field, etc.).

[0080] For example, when a UE transmits a PUSCH on an active UL BWP b of a carrier f of a serving cell c using a parameter set (open loop parameter set) with index j and a power control adjustment state (PUSCH power control adjustment state) with index l, the PUSCH transmission power (P PUSCH、b,f,c (i,j,q d ,l))[dBm] is P CMAX,f,c(i) , P O_PUSCH,b,f,c (j), M PUSCH RB,b,f,c (i), α b,f,c (j), P.L. b,f,c (q d ), Δ TF,b,f,c (i), f b,f,c (i, l), may be based on at least one of:

[0081] The power control adjustment state may be referred to as a value based on TPC commands, an accumulated value of TPC commands, or a value due to a closed loop, with power control adjustment state index l being referred to as a closed loop index.

[0082] Furthermore, the PUSCH transmission opportunity i is a period during which the PUSCH is transmitted, and may be configured, for example, by one or more symbols, one or more slots, or the like.

[0083] P CMAX,f,c(i) is, for example, the transmission power of the user terminal (also referred to as maximum transmission power, UE maximum output power, etc.) set for carrier f of serving cell c at transmission opportunity i.

[0084] P O_PUSCH,b,f,c (j) is, for example, a parameter related to the target received power set for the active UL BWP b of the carrier f of the serving cell c at the transmission opportunity i (for example, a parameter related to the transmit power offset, also referred to as the transmit power offset P0, the target received power parameter, etc.). O_UE_PUSCH,b,f,c(j) is P O_NOMINAL_PUSCH,f,c (j) and P O_UE_PUSCH,b,f,c It may be a sum of (j).

[0085] M PUSCH RB,b,f,c (i) is the number of resource blocks (bandwidth) allocated to PUSCH for transmission opportunity i in active UL BWP b of carrier f with serving cell c and subcarrier spacing μ. b,f,c (j) is a value provided by a higher layer parameter (e.g., also called msg3-Alpha, p0-PUSCH-Alpha, fractional factor, etc.).

[0086] PL b,f,c (q d ) is, for example, the index q of the reference signal (RS, path loss reference RS, pathloss (PL)-RS, path loss reference RS, DL-RS for path loss measurement, PUSCH-PathlossReferenceRS) for the downlink BWP associated with the active UL BWP b of the carrier f of the serving cell c. d is the path loss (path loss estimation [dB], path loss compensation) calculated by the user terminal using

[0087] If the UE is not provided with a pathloss reference RS (e.g., PUSCH-PathlossReferenceRS) or if the UE is not provided with individual upper layer parameters, the UE may use RS resources from the synchronization signal (SS) / physical broadcast channel (PBCH) block (SS block (SSB)) used to obtain the Master Information Block (MIB) to derive the PL. b,f,c (q d ) may be calculated.

[0088] When the UE is configured with a number of RS resource indices up to the value of the maximum number of pathloss reference RSs (e.g., maxNrofPUSCH-PathlossReferenceRSs) and a set of RS configurations for the RS resource indices according to the pathloss reference RSs, the set of RS resource indices may include one or both of a set of SS / PBCH block indices and a set of channel state information (CSI)-reference signal (RS) resource indices. The UE may select RS resource index q in the set of RS resource indices. d may be identified.

[0089] If a PUSCH transmission is scheduled by a Random Access Response (RAR) UL grant, the UE uses the same RS resource index q as for the corresponding PRACH transmission. d may also be used.

[0090] When a UE is provided with a power control configuration for a PUSCH by a sounding reference signal (SRS) resource indicator (SRI) (e.g., SRI-PUSCH-PowerControl) and with one or more values ​​of the ID of the pathloss reference RS, the UE may obtain a mapping between a set of values ​​for the SRI field in DCI format 0_1 ​​and a set of ID values ​​of the pathloss reference RS from higher layer signaling (e.g., sri-PUSCH-PowerControl-Id in SRI-PUSCH-PowerControl). The UE may obtain an RS resource index q from the ID of the pathloss reference RS mapped to the SRI field value in DCI format 0_1 ​​that schedules the PUSCH. d may be determined.

[0091] If a PUSCH transmission is scheduled by DCI format 0_0 and the UE is not provided with PUCCH spatial relationship information for the PUCCH resource with the lowest index for the active UL BWP b of each carrier f and serving cell c, the UE shall select the PUCCH resource with the same RS resource index q as the PUCCH transmission in that PUCCH resource. d may also be used.

[0092] If the PUSCH transmission is scheduled by DCI format 0_0 and the UE is not provided with spatial settings for PUCCH transmission, or if the PUSCH transmission is scheduled by DCI format 0_1 ​​that does not include an SRI field, or if the UE is not provided with settings for PUSCH power control by SRI, the UE shall select RS resource index q with an ID of a path loss reference RS of zero. d may also be used.

[0093] For PUSCH transmission configured by a configured grant configuration (e.g., ConfiguredGrantConfig), if the configured grant configuration includes a specific parameter (e.g., rrc-ConfiguredUplinkGrant), the RS resource index q is determined by the path loss reference index (e.g., pathlossReferenceIndex) in the specific parameter. d may be provided to the UE.

[0094] For the PUSCH transmission configured by the configuration grant configuration, if the configuration grant configuration does not include a specific parameter, the UE shall determine the RS resource index q from the value of the ID of the path loss reference RS mapped to the SRI field in the DCI format that activates the PUSCH transmission. d If the DCI format does not include an SRI field, the UE may determine an RS resource index q with the ID of the path loss reference RS set to zero. d may be determined.

[0095] Δ TF,b,f,c(i) is the transmission power adjustment component (offset, transmission format compensation) for UL BWP b of carrier f of serving cell c.

[0096] f b,f,c (i,l) is the PUSCH power control adjustment state for the active UL BWP b of carrier f of serving cell c at transmission opportunity i. b,f,c (i,l) is δ PUSCH,b,f,c It may be based on (i,l).

[0097] If TPC accumulation is enabled, f b,f,c (i,l) is δ PUSCH,b,f,c It may be based on the cumulative value of (m, l).

[0098] If TPC accumulation is disabled, f b,f,c (i,l) is δ PUSCH,b,f,c It may be (i,l) (absolute value).

[0099] If information indicating that TPC accumulation is disabled (TPC-Accumulation) is not set (if information indicating that TPC accumulation is disabled is not provided, and TPC accumulation is set to enabled), the UE accumulates TPC command values ​​and determines the transmit power based on the accumulation result (power control state) (applies the TPC command values ​​via accumulation).

[0100] When information indicating that TPC accumulation is disabled (TPC-Accumulation) is set (when information indicating that TPC accumulation is disabled is provided, or when TPC accumulation is set to disabled), the UE does not accumulate TPC command values ​​and determines the transmission power based on the TPC command values ​​(power control state) (applies the TPC command values ​​without using accumulation).

[0101] δ PUSCH,b,f,c(i,l) may be a TPC command value included in DCI format 0_0 or DCI format 0_1 ​​that schedules a PUSCH transmission opportunity i on active UL BWP b of carrier f of serving cell c, or a TPC command value jointly coded with other TPC commands in DCI format 2_2 with a CRC scrambled by a specific Radio Network Temporary Identifier (RNTI) (e.g., TPC-PUSCH-RNTI).

[0102] Σ m=0 C(Di)-1 δ PUCCH,b,f,c (m,l) is the cardinality C(D i ) a set of TPC command values ​​D i It may be the sum of the TPC command values ​​in i is the K PUSCH transmission opportunity i-i0 on the active UL BWP b of carrier f of serving cell c for the PUSCH power control adjustment state l. PUSCH (i-i0)-1 symbols ago and K PUSCH (i) may be the set of TPC command values ​​received between symbols i and i0 for PUSCH transmission opportunity i-i0. PUSCH (i-i0) symbols ago is K of PUSCH transmission opportunity i PUSCH (i) It may be the smallest positive integer that is earlier than the symbol before.

[0103] If a PUSCH transmission is scheduled by DCI format 0_0 or DCI format 0_1, K PUSCH (i) may be the number of symbols in the active UL BWP b of carrier f of serving cell c after the last symbol of the corresponding PDCCH reception and before the first symbol of the PUSCH transmission. If PUSCH transmission is configured by configured grant configuration information (ConfiguredGrantConfig), K PUSCH(i) is equal to the product of the number of symbols per slot N in the active UL BWP b of carrier f in serving cell c and the minimum value of the value provided by k2 in the PUSCH common configuration information (PUSCH-ConfigCommon). symb slot K, which may be the number of symbols. PUSCH,min The power control adjustment state may be set to have a plurality of states (e.g., two states) or a single state by upper layer parameters. Also, when a plurality of power control adjustment states are set, one of the plurality of power control adjustment states may be identified by an index l (e.g., l ∈ {0, 1}).

[0104] <PUCCH Transmission Power Control>

[0105] In NR, the transmission power of PUCCH is controlled based on the TPC command (also referred to as value, increment / decrement value, correction value, indication value, etc.) indicated by the value of the field (also referred to as TPC command field, first field, etc.) in DCI.

[0106] For example, using the index l of the power control adjustment state (PUCCH power control adjustment state), the transmission power of PUCCH (P PUCCH、b,f,c (i,q u d ,q CMAX,f,c ,l)) [dBm] in the PUCCH transmission occasion (also referred to as transmission period, etc.) i for the active UL BWP b of carrier f in serving cell c is based on at least one of P CMAX,f,c (i), P O_PUCCH,b,f,c (q u ), M PUCCH RB,b,f,c (i), PL b,f,c (q d ), Δ F_PUCCH (F), Δ TF,b,f,c (i), g b,f,c (i,l).

[0107] The power control adjustment state may be referred to as a value based on TPC commands, an accumulated value of TPC commands, or a value due to a closed loop, with power control adjustment state index l being referred to as a closed loop index.

[0108] Furthermore, the PUCCH transmission opportunity i is a period during which the PUCCH is transmitted, and may be composed of, for example, one or more symbols, one or more slots, or the like.

[0109] P CMAX,f,c (i) is, for example, the transmission power of the user equipment (also referred to as maximum transmission power, UE maximum output power, etc.) set for carrier f of serving cell c at transmission opportunity i. O_PUCCH,b,f,c (q u ) is, for example, a parameter related to the target received power (e.g., a parameter related to the transmit power offset, also referred to as the transmit power offset P0 or the target received power parameter) set for the active UL BWP b of the carrier f of the serving cell c at the transmission opportunity i.

[0110] M PUCCH RB,b,f,c (i) is the number of resource blocks (bandwidth) allocated to PUCCH for transmission opportunity i in active UL BWP b of carrier f with serving cell c and subcarrier spacing μ. b,f,c (q d ) is, for example, the index q of the reference signal for the downlink BWP (pathloss reference RS, pathloss(PL)-RS, pathloss reference RS, DL-RS for pathloss measurement, PUCCH-PathlossReferenceRS) associated with the active UL BWP b of carrier f of serving cell c. d is the path loss (path loss estimation [dB], path loss compensation) calculated by the user terminal using

[0111] If the UE is not provided with pathloss reference RSs (pathlossReferenceRSs) or before the UE is provided with individual higher layer parameters, the UE shall calculate the pathloss PL using RS resources obtained from the SS / PBCH block that the UE uses to acquire the MIB. b,f,c (q d ) is calculated.

[0112] If the UE is given pathloss reference RS information (pathlossReferenceRSs in PUCCH power control information (PUCCH-PowerControl)) but not PUCCH spatial relation information (PUCCH-SpatialRelationInfo), the UE obtains the value of the reference signal (referencesignal) in the PUCCH pathloss reference RS from the PUCCH pathloss reference RS-ID (PUCCH-PathlossReferenceRS-Id) with index 0 in the PUCCH pathloss reference RS information (PUCCH-PathlossReferenceRS). The resource of this reference signal is either on the same serving cell or, if given, on the serving cell indicated by the value of pathloss reference association information (pathlossReferenceLinking). The pathloss reference association information indicates which DL the UE applies as a pathloss reference: a special cell (SpCell) or a secondary cell (SCell) corresponding to this UL. The SpCell may be a primary cell (PCell) in a master cell group (MCG) or a primary secondary cell (PSCell) in a secondary cell group (SCG). The pathloss reference RS information indicates a set of reference signals (e.g., CSI-RS configurations or SS / PBCH blocks) used for PUCCH pathloss estimation.

[0113] Δ F_PUCCH (F) is a higher layer parameter given for each PUCCH format. TF,b,f,c(i) is the transmission power adjustment component (offset) for UL BWP b of carrier f of serving cell c;

[0114] g b,f,c (i,l) is the TPC command-based value (e.g., power control adjustment state, accumulated value of TPC command, closed loop value, PUCCH power adjustment state) of the power control adjustment state index l of the active UL BWP of carrier f for serving cell c and transmission opportunity i. For example, g b,f,c (i,l) is δ PUCCH,b,f,c It may be based on (i,l).

[0115] If TPC accumulation is enabled, g b,f,c (i,l) is δ PUCCH,b,f,c It may be based on the cumulative value of (i,l).

[0116] If TPC accumulation is disabled, g b,f,c (i,l) is δ PUCCH,b,f,c It may be (i,l) (absolute value).

[0117] where δ PUCCH,b,f,c (i,l) is a TPC command value that is included in DCI format 1_0 or DCI format 1_1 that the UE detects at PUCCH transmission opportunity i of active UL BWP b of carrier f of serving cell c, or may be jointly coded with other TPC commands in DCI format 2_2 with CRC scrambled by a specific Radio Network Temporary Identifier (RNTI) (e.g., TPC-PUSCH-RNTI).

[0118] Σ m=0 C(Ci)-1 δ PUCCH,b,f,c (m,l) is the cardinality C(C i ) a set C of TPC command values i It may be the sum of the TPC command values ​​in C iis the K of PUCCH transmission opportunities i-i0 of active UL BWP b on carrier f of serving cell c for PUCCH power control adjustment state l. PUCCH (i-i0)-1 symbols ago and K PUCCH (i) may be the set of TPC command values ​​received between symbols i and i0 for PUSCH transmission opportunity i-i0. PUCCH (i-i0) symbols ago is K of PUSCH transmission opportunity i PUCCH (i) It may be the smallest positive integer that is earlier than the symbol before.

[0119] If the PUCCH transmission is in response to the UE detecting DCI format 1_0 or DCI format 1_1, then K PUCCH (i) may be the number of symbols in the active UL BWP b of carrier f of serving cell c after the last symbol of the corresponding PDCCH reception and before the first symbol of the PUCCH transmission. If PUCCH transmission is configured by configured grant configuration information (ConfiguredGrantConfig), K PUSCH (i) is the number of symbols per slot, N, in the active UL BWP b of carrier f of serving cell c. symb slot and the minimum value of the value provided by k2 in the PUSCH common configuration information (PUSCH-ConfigCommon). PUCCH,min It may also be the number of symbols.

[0120] If the UE is provided with information indicating the use of two PUCCH power control adjustment states (twoPUCCH-PC-AdjustmentStates) and PUCCH spatial relation information (PUCCH-SpatialRelationInfo), l={0,1}; if the UE is not provided with information indicating the use of two PUCCH power control adjustment states or PUCCH spatial relation information, l=0.

[0121] If the UE obtains the TPC command value from DCI format 1_0 or 1_1, and if the UE is provided with PUCCH spatial relationship information, the UE may obtain the mapping between the PUCCH spatial relationship information ID (pucch-SpatialRelationInfoId) value and the closed-loop index (closedLoopIndex, power adjustment state index l) through the index provided by the P0 ID for PUCCH (p0-PUCCH-Id in p0-Set in PUCCH-PowerControl in PUCCH-Config). If the UE receives an activation command including the value of PUCCH spatial relationship information ID, the UE may determine the value of the closed-loop index that provides the value of l through a link to the corresponding P0 ID for PUCCH.

[0122] If the UE has an active UL BWP b for carrier f in serving cell c, then the P O_PUCCH,b,f,c (q u ) value setting is provided by a higher layer, g b,f,c (i,l)=0, k=0,1,...,i. If the UE is provided with PUCCH spatial relationship information, the UE u Based on the P0 ID for PUCCH corresponding to , the closed-loop index value corresponding to l, and the PUCCH spatial relationship information associated with , u The value of l may be determined from the value of

[0123] q u may be a P0 ID for PUCCH (p0-PUCCH-Id) indicating P0 for PUCCH (P0-PUCCH) in the P0 set for PUCCH (p0-Set).

[0124] If the UE is not provided with PUCCH spatial relation information (PUCCH-SpatialRelationInfo), the UE derives the P0 value for PUCCH (p0-PUCCH-Value) from the value of P0-ID for PUCCH (p0-PUCCH-Id) that is equal to the smallest value of P0-ID for PUCCH (p0-PUCCH-Id) in the P0 set (p0-Set).

[0125] If the UE is provided with pathloss reference RSs (pathlossReferenceRSs) but not with PUCCH spatial relation information (PUCCH-SpatialRelationInfo), the UE derives the value of the reference signal (referenceSignal) in the PUCCH pathloss reference RS from the PUCCH pathloss reference RS-ID (pucch-PathlossReferenceRS-Id) with index 0 in the PUCCH pathloss reference RS (PUCCH-PathlossReferenceRS). The derived RS resource is on the primary cell or, if pathloss reference linking (pathlossReferenceLinking) is provided, on the serving cell indicated by the value of pathloss reference linking.

[0126] If the UE is provided with the number of PUCCH power control adjustment states maintained by the UE being two (twoPUCCH-PC-AdjustmentStates) and PUCCH spatial relationship information, then the PUCCH power control adjustment state (closed-loop) index l∈{0,1}. If the UE is not provided with the number of PUCCH power control adjustment states maintained by the UE being two or with PUCCH spatial relationship information, then the PUCCH power control adjustment state (closed-loop) index l=0.

[0127] That is, if the UE is not provided with PUCCH spatial relationship information, P0, PL-RS, and closed-loop index are determined according to the rule, where the smallest PUCCH P0-ID is applied, PUCCH path loss reference RS-ID=0 is applied, and l=0 is applied.

[0128] In the RRC information element (IE), the PUCCH power control information element (PUCCH-PowerControl) includes a set of P0 (p0-Set) for PUCCH P0 (P0-PUCCH) and a set of path loss reference RSs (pathlossReferenceRSs) for PUCCH path loss reference RS (PUCCH-PathlossReferenceRS). The P0 for PUCCH includes a P0-ID for PUCCH (P0-PUCCH-Id) and a p0-PUCCH-Value. The PUCCH path loss reference RS includes a PUCCH path loss reference RS-ID (PUCCH-PathlossReferenceRS-Id) and a reference signal (referenceSignal, SSB index or NZP-CSI-RS resource ID).

[0129] <SRS Transmission Power Control> For example, using the index l of the power control adjustment state, the transmission power (P SRS、b,f,c (i,q s ,l)) of the SRS in the SRS transmission opportunity (also referred to as the transmission period, etc.) i of the active UL BWP b of the carrier f of the serving cell c may be based on at least one of P CMAX,f,c (i), P O_SRS,b,f,c (q s ), M SRS,b,f,c (i), α SRS,b,f,c (q s ), PL b,f,c (q d ), h b,f,c (i,l).

[0130] The power control adjustment state may be referred to as a value based on the TPC command of the power control adjustment state index l, the cumulative value of the TPC command, or a value by closed loop. l may be referred to as the closed loop index.

[0131] Furthermore, the SRS transmission opportunity i is a period during which the SRS is transmitted, and may be composed of, for example, one or more symbols, one or more slots, or the like.

[0132] where P CMAX,f,c (i) is, for example, the UE maximum output power for carrier f of serving cell c at SRS transmission opportunity i. P O_SRS,b,f,c (q s ) is the active UL BWP b of carrier f in serving cell c and SRS resource set q s (provided by SRS-ResourceSet and SRS-ResourceSetId), and a parameter related to the target received power provided by p0 for (for example, a parameter related to the transmit power offset, also referred to as the transmit power offset P0 or the target received power parameter, etc.).

[0133] M SRS,b,f,c (i) is the SRS bandwidth in number of resource blocks for SRS transmission opportunity i on active UL BWP b of carrier f with serving cell c and subcarrier spacing μ;

[0134] α SRS,b,f,c (q s ) is the active UL BWP b of serving cell c and carrier f with subcarrier spacing μ and SRS resource set q s and α (e.g., alpha) for

[0135] PL b,f,c (q d ) is the active DL BWP of serving cell c and SRS resource set q. s and, for RS resource index q d is the DL path loss estimate [dB] (path loss estimate [dB], path loss compensation) calculated by the UE using the RS resource index q d is the SRS resource set q sand a pathloss reference RS (pathloss reference RS, pathloss(PL)-RS, DL-RS for pathloss measurement, e.g., provided by pathlossReferenceRS) associated with the SS / PBCH block index (e.g., ssb-Index) or CSI-RS resource index (e.g., csi-RS-Index).

[0136] If the UE is not provided with pathloss reference RSs (pathlossReferenceRSs) or before the UE is provided with individual higher layer parameters, the UE shall use RS resources obtained from the SS / PBCH block that the UE uses to acquire the MIB. b,f,c (q d ) is calculated.

[0137] h b,f,c (i,l) is the SRS power control adjustment state for the active UL BWP of carrier f of serving cell c at SRS transmission opportunity i. If the SRS power control adjustment state configuration (e.g., srs-PowerControlAdjustmentStates) indicates the same power control adjustment state for SRS transmission and PUSCH transmission, the current PUSCH power control adjustment state f b,f,c On the other hand, if the setting of the SRS power control adjustment state indicates independent power control adjustment states for SRS transmission and PUSCH transmission, the SRS power control adjustment state h b,f,c (i) is δ SRS,b,f,c It may also be based on (m).

[0138] If TPC accumulation is enabled, h b,f,c (i) is δ SRS,b,f,c It may be based on the cumulative value of (m).

[0139] If TPC accumulation is disabled, h b,f,c (i) is δ SRS,b,f,c (i) (absolute value) may also be used.

[0140] where δ SRS,b,f,c(m) may be a TPC command value that is jointly coded with other TPC commands in a PDCCH having DCI (e.g., DCI format 2_3). m=0 C(Si)-1 δ SRS,b,f,c (m) is the K of SRS transmission opportunity i-i0 on the active UL BWP b of carrier f with serving cell c and subcarrier spacing μ. SRS (i-i0)-1 symbols ago and K SRS (i) The cardinality C(S i ) a set S of TPC command values i where i0 is the sum of the TPC commands in K for SRS transmission opportunity i-i0. SRS (i-i0)-1 symbols ago is K for SRS transmission opportunity i. SRS (i) It may be the smallest positive integer that is earlier than the symbol before.

[0141] If the SRS transmission is aperiodic, K SRS (i) may be the number of symbols in the active UL BWP b of carrier f of serving cell c after the last symbol of the corresponding PDCCH that triggers the SRS transmission and before the first symbol of the SRS transmission. If the SRS transmission is semi-persistent or periodic, K SRS (i) is the number of symbols per slot, N, in the active UL BWP b of carrier f of serving cell c. symb slot and the minimum value of the value provided by k2 in the PUSCH common configuration information (PUSCH-ConfigCommon). SRS,min It may also be the number of symbols.

[0142] (analysis) In the unified TCI framework of Rel.17, the following assumptions 1-1 to 1-4 are considered for the update and activation of the common TCI state ID to provide at least one of common QCL information for UE-dedicated PDCCH / PDSCH and common UL TX spatial filter for UE-dedicated PUSCH / PUCCH across multiple CC / multiple BWP sets.

[0143] [Assumption 1-1] The RRC-configured TCI state pool may be configured in the PDSCH-Config for each BWP / CC, as in Rel. 15 / 16. Such RRC-configured TCI state pool configuration does not imply that separate DL / UL TCI state pools are excluded or supported.

[0144] [Assumption 1-2] The RRC-configured TCI state pool may not be in the PDSCH configuration (PDSCH-Config) for each BWP / CC, but may be replaced by a reference to the RRC-configured TCI state pool in the reference BWP / CC. The RRC-configured TCI state pool is configured in the PDSCH configuration (PDSCH-Config) of the reference BWP / CC. For a BWP / CC whose PDSCH configuration includes a reference to the RRC-configured TCI state pool in the reference BWP / CC, the UE applies the RRC-configured TCI state pool in the reference BWP / CC.

[0145] [Assumption 1-3] If there is no BWP / CC ID (bwp-Id / cell) for a source RS of QCL type A / D in the QCL information (QCL-Info) of the TCI state, the UE assumes that source 1-RS of QCL type A / D is within the BWP / CC for which the TCI state applies.

[0146] [Assumption 1-4] A UE capability is introduced to report the maximum number of TCI state pools it supports across multiple BWPs and multiple CCs within a band, with candidate values ​​including at least 1.

[0147] In the unified TCI framework of Rel.17, the following assumptions 2-1 to 2-3 are considered for the update and activation of the common TCI state ID to provide at least one of common QCL information for UE-dedicated PDCCH / PDSCH and common UL TX spatial filter for UE-dedicated PUSCH / PUCCH across multiple CC / multiple BWP sets.

[0148] [Assumption 2-1] The source RS determined from the indicated common TCI state ID to provide a QCL type D indication to the target CC and determine the UL TX spatial filter may be configured in the target CC or another CC.

[0149] [Assumption 2-2] For intra-band CA, configurations 1 to 2 below may be supported without additional QCL rules. [[Configuration 1]] A single source RS across multiple CCs may be determined from a common TCI state ID indicated to provide QCL Type D indication and determine the UL TX spatial filter for a set of configured CCs. [[Configuration 2]] One source RS per CC may be determined from a common TCI State ID indicated for the set of configured CCs to provide QCL Type D indication and determine the UL TX spatial filter. Multiple CC-specific source RSs may be associated with the same QCL Type D RS.

[0150] [Assumption 2-3] The set of configured CC / BWPs includes all BWPs within the configured CC.

[0151] In a CA, a CC-specific TCI state pool / configuration (case 1) and a CC-common TCI state pool / configuration (case 2) may be supported.

[0152] [Case 1] 3A shows an example of a CC-specific TCI state pool. In this example, a TCI state list in a PDSCH configuration is configured for BWP1 in CC1, and a TCI state list in a PDSCH configuration is configured for BWP1 in CC2. One MAC CE / DCI indicates the TCI state ID.

[0153] [Case 2] 3B shows an example of a CC common TCI state pool. In this example, the TCI state list in the PDSCH configuration for BWP1 in CC1 is configured, and the TCI state list in the PDSCH configuration for BWP1 in CC2 is absent. One MAC CE / DCI indicates a TCI state ID (e.g., TCI state #2).

[0154] One TCI state information element (TCI-State) in the TCI state pool may include a TCI state ID, a QCL type 1 (QCL information, QCL-Info), and a QCL type 2 (QCL information, QCL-Info).

[0155] [Case 1] 4A shows an example in which a TCI state in a CC-specific TCI state pool indicates a CC-specific QCL Type D RS. QCL Type 1 does not include a cell ID or BWP ID, but includes a reference signal (referenceSignal=NZP-CSI-RS#5) and a QCL type (qcl-Type=typeA). QCL Type 2 does not include a cell ID or BWP ID, but includes a reference signal (referenceSignal=NZP-CSI-RS#5) and a QCL type (qcl-Type=typeD).

[0156] Figure 4B shows an example in which the TCI state in the CC-specific TCI state pool indicates a CC-common QCL Type D RS. QCL Type 1 does not include a cell ID or BWP ID, but includes a reference signal (referenceSignal=NZP-CSI-RS#5) and a QCL type (qcl-Type=typeA). QCL Type 2 includes a cell ID (cell=#1), a BWP ID (bwp-Id=#1), a reference signal (referenceSignal=NZP-CSI-RS#5), and a QCL type (qcl-Type=typeD).

[0157] [Case 2] 5A shows an example in which a TCI state in the CC-common TCI state pool indicates a CC-specific QCL Type D RS. QCL Type 1 does not include a cell ID or BWP ID, but includes a reference signal (referenceSignal=NZP-CSI-RS#5) and a QCL type (qcl-Type=typeA). QCL Type 2 does not include a cell ID or BWP ID, but includes a reference signal (referenceSignal=NZP-CSI-RS#5) and a QCL type (qcl-Type=typeD).

[0158] Figure 5B shows an example in which the TCI state in the CC-common TCI state pool indicates a CC-common QCL Type D RS. QCL Type 1 does not include a cell ID or BWP ID, but includes a reference signal (referenceSignal=NZP-CSI-RS#5) and a QCL type (qcl-Type=typeA). QCL Type 2 includes a cell ID (cell=#1), a BWP ID (bwp-Id=#1), a reference signal (referenceSignal=NZP-CSI-RS#5), and a QCL type (qcl-Type=typeD).

[0159] In both cases 1 and 2, the TCI state may indicate a CC-specific (BWP / CC-specific) RS (eg, a QCL Type A RS) on each BWP / CC.

[0160] [Case 1] 6A shows an example where TCI states in a CC-specific TCI state pool indicate CC-specific RSs: A TCI state set for BWP1 in CC1 indicates a CC-specific RS for BWP1 in CC1; a TCI state set for BWP1 in CC2 indicates a CC-specific RS for BWP1 in CC2.

[0161] [Case 2] 6B shows an example where a TCI state in a CC common TCI state pool indicates a CC-specific RS. The TCI state configured for BWP1 in CC1 indicates (the same RS ID of) a CC-specific RS for BWP1 in CC1 and a CC-specific RS for BWP1 in CC2. The TCI state configured for BWP1 in CC1 may not include a BWP / CC ID.

[0162] In both cases 1 and 2, the TCI state may indicate CC-common (BWP / CC-common) RS on each BWP / CC (eg, QCL type D RS of CSI-RS with repetition).

[0163] [Case 1] 7A shows an example where TCI states in a CC-specific TCI state pool indicate CC-common RSs: a TCI state set for BWP1 in CC1 indicates a CC-common RS for BWP1 in CC1, and a TCI state set for BWP1 in CC2 indicates the (same) CC-common RS for BWP1 in CC2.

[0164] [Case 2] 7B shows an example where a TCI state in the CC-common TCI state pool indicates a CC-common RS: The TCI state set for BWP1 in CC1 indicates a CC-common RS for all CCs / BWPs.

[0165] In the present disclosure, the TCI state may include QCL Type A RS / QCL Type D RS, or may include QCL Type A RS for frequency range (FR)1, or may include QCL Type A RS / QCL Type D RS for FR2.

[0166] For path loss measurement for the unified TCI framework, it is considered that the PL-RS (configured for path loss calculation) is included in or associated with the UL TCI state or the joint TCI state, and this association may be configured / indicated by the RRC IE / MAC CE.

[0167] It is considered that the TPC parameters (P0, alpha, closed-loop index l) other than the PL-RS are associated with the UL TCI state or the joint TCI state for the PUCCH / PUSCH / SRS. It is considered that the set of P0, alpha, and closed-loop index is configured separately for each of the PUCCH / PUSCH / SRS.

[0168] However, when one or more TCI state pools are configured, it is unclear how to determine the TCI state, PL-RS, and TPC parameters of each cell / CC / BWP for multiple cells / CCs / BWPs.If such a determination method is unclear, it may result in a decrease in throughput / communication quality.

[0169] Therefore, the present inventors have conceived a method for determining TCI states / PL-RS / TPC parameters for one or more TCI state pools and multiple cells.

[0170] Hereinafter, embodiments according to the present disclosure will be described in detail with reference to the drawings. Wireless communication methods according to the embodiments may be applied independently or in combination.

[0171] In the present disclosure, "A / B" and "at least one of A and B" may be interpreted interchangeably. Also, in the present disclosure, "A / B / C" may mean "at least one of A, B, and C."

[0172] In the present disclosure, terms such as activate, deactivate, indicate (or indicate), select, configure, update, and determine may be read interchangeably. In the present disclosure, terms such as support, control, controllable, operate, and operate may be read interchangeably.

[0173] In the present disclosure, Radio Resource Control (RRC), RRC parameters, RRC messages, higher layer parameters, information elements (IEs), configurations, etc. may be interchangeable. In the present disclosure, Medium Access Control (MAC) control elements (CEs), update commands, activation / deactivation commands, etc. may be interchangeable.

[0174] In the present disclosure, higher layer signaling may be, for example, any one of Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information, and the like, or a combination thereof.

[0175] In the present disclosure, MAC signaling may use, for example, a MAC Control Element (MAC CE), a MAC Protocol Data Unit (PDU), etc. Broadcast information may be, for example, a Master Information Block (MIB), a System Information Block (SIB), Remaining Minimum System Information (RMSI), Other System Information (OSI), etc.

[0176] In the present disclosure, physical layer signaling may be, for example, Downlink Control Information (DCI), Uplink Control Information (UCI), and the like.

[0177] In this disclosure, the terms index, identifier (ID), indicator, resource ID, etc. may be interchangeable. In this disclosure, the terms sequence, list, set, group, cluster, subset, etc. may be interchangeable.

[0178] In this disclosure, the terms panel, UE panel, panel group, beam, beam group, precoder, Uplink (UL) transmitting entity, Transmission / Reception Point (TRP), base station, Spatial Relation Information (SRI), spatial relation, SRS Resource Indicator (SRI), Control Resource Set (CORESET), Physical Downlink Shared Channel (PDSCH), Codeword (CW), Transport Block (TB), Reference Signal (RS), antenna port (e.g., Demodulation Reference Signal (DMRS) port), antenna port group (e.g., DMRS port group), group (e.g., spatial relation group, Code Division Multiplexing (CDM) group, reference signal group, CORESET group, Physical Uplink Control Channel (PUCCH) group, PUCCH resource group), resource (e.g., reference signal resource, SRS resource), resource set (e.g., reference signal resource set), CORESET pool, downlink Transmission Configuration Indication state (TCI state) (DL TCI state), uplink TCI state (UL TCI state), unified TCI state, common TCI state, Quasi-Co-Location (QCL), QCL assumption, etc. may be read as interchangeable.

[0179] 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 applicable to multiple (multiple types) channels / RS, TCI state applicable to multiple types of channels / RS, and PL-RS may be read interchangeably.

[0180] In the present disclosure, the terms multiple TCI states configured 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 configured / activated by RRC / MAC CE, and TCI state information may be read interchangeably.

[0181] In the present disclosure, DL TCI, DL only TCI, separate DL only TCI, DL common TCI, DL unified TCI, common TCI, and unified TCI may be interchangeable. In the present disclosure, UL TCI, UL only TCI, separate UL only TCI, UL common TCI, UL unified TCI, common TCI, and unified TCI may be interchangeable.

[0182] In the present disclosure, setting / instructing / updating a separate TCI state, setting / instructing / updating a TCI state for DL ​​only, setting / instructing / updating a TCI state for UL only, and setting / instructing / updating a TCI state for DL ​​and UL may be read as interchangeable.

[0183] In the present disclosure, in the case of a joint TCI pool, "when a joint TCI pool is configured" and "when a separate TCI pool is configured" may be read interchangeably.

[0184] In the present disclosure, the terms "a joint TCI pool is configured," "the TCI pool configured for DL ​​and the TCI pool configured for UL are common," "a TCI pool for both DL and UL is configured," and "one TCI pool (one set of TCIs) is configured" may be read interchangeably.

[0185] In the present disclosure, the following terms may be interchangeable: a separate TCI pool is configured; a TCI pool configured for DL ​​and a TCI pool configured for UL are different; a TCI pool for DL ​​(first TCI pool, first TCI set) and a TCI pool for UL (second TCI pool, second TCI set) are configured; multiple TCI pools (multiple sets of TCIs) are configured; and a TCI pool for DL ​​is configured. When a TCI pool for DL ​​is configured, the TCI pool for UL may be equal to the configured TCI pool.

[0186] In the present disclosure, the channels / RS to which the common TCI is applied may be PDSCH / HARQ-ACK information / PUCCH / PUSCH / CSI-RS / SRS.

[0187] In the present disclosure, the indicated CC(cell), the indicated CC(cell) / BWP, and the CC(cell) / BWP indicated by the MAC CE may be interchangeable. In the present disclosure, the CC(cell) and the CC(cell) / BWP may be interchangeable.

[0188] (Wireless communication method) In the present disclosure, TCI state, unified TCI state, UL and DL TCI state for joint TCI indication, UL only TCI state for separate TCI indication, and DL only TCI state for separate TCI indication may be read interchangeably.

[0189] In the various figures of this disclosure, the unified TCI state may be referred to simply as the TCI state.

[0190] In the figures of the present disclosure, an example is described in which the (unified / joint) TCI state and the TCI state for DL ​​refer to the CSI-RS and the TCI state for UL refers to the SRS, but these RSs are not limited to these. For example, the (unified / joint) TCI state and the TCI state for DL ​​may refer to the SSB, and the TCI state for UL may refer to the CSI-RS or the SSB.

[0191] A unified TCI state / unified TCI state list / unified TCI state pool may be introduced as new RRC parameters. A new BWP / CC list indicating a set of BWPs / CCs may be introduced as a new RRC parameter.

[0192] First Embodiment This embodiment relates to a unified TCI state within the CA for the TCI state pool.

[0193] <<Aspect 1-1>> This aspect relates to unified TCI states within CA versus separate TCI state pools for DL / UL.

[0194] When joint TCI indication is applied, one list of TCI states may be configured per BWP / CC (eg, from FIGS. 3A and 3B above to FIGS. 7A and 7B).

[0195] If separate TCI indication is applied, two lists of TCI states may be configured per BWP / CC.

[0196] The TCI state may indicate a CC-specific (BWP / CC-specific) RS (e.g., QCL Type A RS) on each BWP / CC.

[0197] [Case 1] 8A shows an example in which a TCI state in a CC-specific TCI state pool indicates a CC-specific RS. The TCI state in the separate DL TCI state pool and the TCI state in the separate UL TCI state pool configured for BWP1 in CC1 indicate the CC-specific RS for DL ​​and the CC-specific RS for UL for BWP1 in CC1, respectively. The TCI state in the separate DL TCI state pool and the TCI state in the separate UL TCI state pool configured for BWP1 in CC2 indicate the CC-specific RS for DL ​​and the CC-specific RS for UL for BWP1 in CC2, respectively.

[0198] [Case 2] 8B shows an example in which the TCI states in the CC common TCI state pool indicate CC-specific RSs. The TCI states in the separate DL TCI state pool configured for BWP1 in CC1 indicate the DL CC-specific RS for BWP1 in CC1 and the DL CC-specific RS for BWP1 in CC2. The TCI states in the separate UL TCI state pool configured for BWP1 in CC1 indicate the UL CC-specific RS for BWP1 in CC1 and the UL CC-specific RS for BWP1 in CC2.

[0199] The TCI state may indicate a CC-common (BWP / CC-common) RS (e.g., QCL Type A RS) on each BWP / CC.

[0200] [Case 1] 9A shows an example in which a TCI state in a CC-specific TCI state pool indicates a CC-common RS. The TCI state in the separate DL TCI state pool set for BWP1 in CC1 and the TCI state in the separate DL TCI state pool set for BWP1 in CC2 indicate the CC-common RS for DL ​​for BWP1 in CC1. The TCI state in the separate UL TCI state pool set for BWP1 in CC1 and the TCI state in the separate UL TCI state pool set for BWP1 in CC2 indicate the CC-common RS for UL for BWP1 in CC1.

[0201] [Case 2] 9B shows an example in which the TCI status in the CC common TCI status pool indicates a CC common RS. The TCI status in the separate DL TCI status pool and the TCI status in the separate UL TCI status pool, which are set for BWP1 in CC1, indicate the CC common RS for DL ​​and the CC common RS for UL, respectively, for BWP1 in CC1.

[0202] <<Aspect 1-2>> This aspect relates to constraints on joint / separate TCI state pools.

[0203] Within the set of BWP / CC, at least one of the following constraints 1 and 2 may be specified:

[0204] [Constraint 1] Only either joint TCI indication (one TCI state list for joint TCI states of DL and UL per BWP / CC) or separate TCI indication (two TCI state lists for separate TCI states of DL only and separate TCI states of UL only per BWP / CC) can be set / indicated for all BWP / CCs in a set of BWP / CCs.

[0205] It may be specified that the UE does not assume that different types of joint TCI indications / lists and separate TCI indications / lists are configured on different BWPs / CCs within a set of BWPs / CCs.

[0206] [Constraint 2] For each BWP / CC, either a joint TCI indication (one TCI state list for joint TCI states of DL and UL per BWP / CC) or a separate TCI indication (two TCI state lists for separate TCI states of DL only and separate TCI states of UL only per BWP / CC) can be set / indicated.

[0207] The set of BWPs / CCs may be explicitly RRC configured (e.g., by a BWP / CC list) or may be implicitly derived, and may be all BWPs and CCs within the same frequency band.

[0208] If a set of BWP / CCs is not explicitly configured, the set of BWP / CCs may include all BWPs and CCs in the same frequency band. Multiple sets of BWP / CCs may be configured. The behavior for BWP / CCs within the set of BWP / CCs may differ from the behavior for BWP / CCs outside the set of BWP / CCs. For example, the UE may assume Restriction 1 for BWP / CCs within the set of BWP / CCs and Restriction 2 for BWP / CCs outside the set of BWP / CCs. For example, the UE may use the unified TCI state for BWP / CCs within the set of BWP / CCs and the Rel. 15 / 16 TCI state for BWP / CCs outside the set of BWP / CCs. The UE may ignore the Rel. 15 / 16 TCI state for BWP / CCs within the set of BWP / CCs.

[0209] Within a set of BWP / CC, the number of TCI state pools may be one.

[0210] <<Aspects 1-3>> This aspect relates to the activation / indication of TCI states in the TCI state pool.

[0211] The TCI state of which CC is activated / indicated by the MAC CE may follow at least one of the following cases 1 and 2.

[0212] [Case 1] For CC-specific TCI state pools, one MAC CE may indicate the active TCI state for each BWP / CC (similar to Rel. 15).

[0213] For CC-specific TCI state pools, one MAC CE may indicate active TCI states for multiple BWP / CCs in a set of BWP / CCs (similar to Rel. 16).

[0214] [Case 2] For a CC common TCI state pool, one MAC CE may indicate the active TCI state for each BWP / CC (similar to Rel. 15). In Case 2, this option may not be necessary, since active TCI state is required in only one BWP / CC.

[0215] For CC common TCI state pools, one MAC CE may indicate active TCI states for multiple BWP / CCs in a set of BWP / CCs (similar to Rel. 16). In case 2, this option may not be needed, since active TCI states are required in only one BWP / CC.

[0216] For a CC common TCI state pool, one MAC CE may indicate one active TCI state for one BWP / CC in a set of BWP / CCs. The one BWP / CC may be the BWP / CC with a configured TCI state list. A TCI state list for DL-only TCI states and a TCI state list for UL-only TCI states may be configured within the same BWP / CC. A TCI state list for DL-only TCI states and a TCI state list for UL-only TCI states may be configured within different BWP / CCs.

[0217] The MAC CE in this embodiment may comply with at least one of MAC CE1 to 3 below. [MAC CE1] One MAC CE indicates both joint DL and UL TCI states for joint TCI indication, and DL-only TCI states and UL-only TCI states for separate TCI indication. [MAC CE2] One MAC CE indicates one of the following: a joint DL and UL TCI state for joint TCI indication, and a DL-only TCI state or a UL-only TCI state for separate TCI indication. [MAC CE3] One MAC CE indicates one of the following: joint TCI state of DL and UL for joint TCI indication, TCI state of DL only for separate TCI indication, and TCI state of UL only for separate TCI indication.

[0218] The TCI state of which CC is activated / indicated by the DCI may follow at least one of the following cases 1 and 2: The DCI may be a beam indication DCI.

[0219] [Case 1] For CC-specific TCI state pools, one DCI may indicate the active TCI state for each BWP / CC (similar to Rel. 15).

[0220] For CC-specific TCI state pools, one DCI may indicate the active TCI states for multiple BWP / CCs within a set of BWP / CCs (similar to Rel. 16).

[0221] The beam direction DCI may be on any BWP / CC with a configured TCI status list, allowing for flexible transmission of the beam direction DCI.

[0222] The beam direction DCI may be on some specific BWP / CCs among the BWP / CCs for which the TCI status list is configured. The specific BWP / CC may be the BWP / CC with the lowest BWP / CC ID among the BWP / CCs for which the TCI status list is configured. In this case, the complexity / load of the UE can be reduced.

[0223] [Case 2] For CC common TCI state pools, one DCI may indicate the active TCI state for each BWP / CC (similar to Rel. 15). In case 2, this option may not be present, since there are no active TCI states in other BWPs / CCs.

[0224] For a CC common TCI state pool, one DCI may indicate one active TCI state for one BWP / CC in a set of BWP / CCs and indicate RS indices (TCI state IDs) on other BWP / CCs in the set.

[0225] The beam instruction DCI may be on a BWP / CC where the TCI state list is set or the TCI state is activated.

[0226] The beam direction DCI may be on another BWP / CC where the TCI status list is not configured or the TCI status is not activated, i.e., the beam direction DCI may perform cross-CC beam direction.

[0227] A TCI status list for a DL-only TCI state and a TCI status list for a UL-only TCI state may be configured in one and the same BWP / CC, or a TCI status list for a DL-only TCI state and a TCI status list for a UL-only TCI state may be configured in different BWP / CCs.

[0228] The DCI in this embodiment may comply with at least one of the following DCI codepoints 1 to 3: [DCI Code Point 1] One DCI code point indicates one joint TCI state of DL and UL for joint TCI indication. [DCI Code Point 2] One DCI code point indicates one pair of DL-only TCI state and UL-only TCI state for separate TCI indication. [DCI Code Point 3] One DCI code point indicates one of the following: DL only TCI state for separate TCI indication and UL only TCI state for separate TCI indication.

[0229] A DCI on one CC may activate the TCI state of another CC, in which case the TCI state can be indicated flexibly. A DCI on one CC may not activate the TCI state of another CC, in which case the load on the UE can be reduced.

[0230] According to this embodiment, the UE can properly determine the unified TCI state.

[0231] <Second embodiment> This embodiment relates to a unified TCI status indication within a CA.

[0232] In the first embodiment, one MAC CE / DCI indicates the TCI status ID. In Rel. 17, one TCI status field indicates one or two TCI states in the separate TCI indication. If one of DL only and UL only is indicated, UE operation becomes problematic.

[0233] FIG. 10A shows an example of the association between the code points of the TCI status field and the DL and UL TCI statuses when a TCI status list is configured for joint TCI indication.

[0234] 10B shows an example of the association of code points in the TCI status field with DL-only TCI status and UL-only TCI status when the TCI status list is configured for separate TCI indication. The code points may be associated with DL TCI status only, UL TCI status only, or both DL TCI status and UL TCI status.

[0235] The TCI state list for joint TCI indication and the TCI state list for separate TCI indication may be switched by the RRC IE / MAC CE.

[0236] If one of the DL-only and UL-only TCI states is indicated by the DCI in the separate TCI indication, the DL / UL TCI state may follow at least one of the following cases 1 and 2. The DCI may be DCI format 1_1 / 1_2. The DCI may or may not involve data scheduling.

[0237] [Case 1] If a pair of UL-only TCI state and DL-only TCI state is indicated, the UE may apply the corresponding UL TCI state and the corresponding DL TCI state in the BWP / CC set.

[0238] If a DL-only TCI state is indicated, the UE may apply the corresponding DL TCI state in the BWP / CC set and maintain the current UL TCI state.

[0239] If a UL-only TCI state is indicated, the UE may apply the corresponding UL TCI state in the BWP / CC set and maintain the current DL TCI state.

[0240] [Case 2] If a pair of UL-only TCI state and DL-only TCI state is indicated, the UE may apply the corresponding UL TCI state (associated RS for each BWP / CC) and the corresponding DL TCI state (associated RS for each BWP / CC) within the set of BWP / CCs.

[0241] If a DL-only TCI state is indicated, the UE may apply the corresponding DL TCI state (associated RS for each BWP / CC) within the set of BWP / CCs and maintain the current UL TCI state (associated RS for each BWP / CC).

[0242] If a UL-only TCI state is indicated, the UE may apply the corresponding UL TCI state (associated RS for each BWP / CC) within the set of BWP / CCs and maintain the current DL TCI state (associated RS for each BWP / CC).

[0243] If the DL and UL TCI states are indicated by a DCI in a joint TCI indication, the DL / UL TCI state may follow at least one of the following cases 1 and 2. The DCI may be DCI format 1_1 / 1_2. The DCI may or may not involve data scheduling.

[0244] [Case 1] If a joint UL and DL TCI state is indicated, the UE may apply the corresponding joint UL and DL TCI state within the set of BWP / CC.

[0245] [Case 2] If a joint UL and DL TCI state is indicated, the UE may apply the corresponding joint UL and DL TCI state (associated RS for each BWP / CC) within the set of BWP / CCs.

[0246] According to this embodiment, the UE can properly determine the TCI state in the CA when instructed to use the unified TCI state.

[0247] <Third embodiment> This embodiment relates to PL-RS and TPC parameters in a unified TCI framework within CA.

[0248] In a unified TCI framework within CA, a problem arises as to how to derive / determine the PL-RS corresponding to the TPC parameters for each BWP / CC. As mentioned above, it is considered that the PL-RS is associated / included in the UL / joint TCI state. Since the TCI state pool can be CC-common or CC-specific, how to indicate the PL-RS on each CC becomes an issue. In Rel. 15 / 16, a PL-RS is configured for each BWP within a CC, and the PL-RS for the PUSCH / PUCCH / SRS is on the same BWP / CC as the PUSCH / PUCCH / SRS. However, if there is no TCI state list for each BWP / CC for the CC-common TCI state pool, a problem arises as to how to derive / determine the PL-RS on each CC for the CC-common TCI state.

[0249] The PL-RS / TPC parameters (e.g., P0 / alpha / closed-loop index setting / set) may be derived / determined from the configured TCI state pool and the TCI state indicated by the MAC CE / DCI. The PL-RS / TPC parameters may follow at least one of the following cases 1 and 2:

[0250] [Case 1] For CC-specific TCI state pools, the PL-RS / TPC parameters (e.g., P0 / alpha / closed-loop index settings / sets) may be determined from the indicated TCI state on each BWP / CC. For CC-specific TCI state pool configuration for each CC, a PL-RS may be explicitly configured / associated with each QCL / TCI state. The PL-RS may or may not be accompanied by the ID of the cell / BWP. The PL-RS / TPC parameters may follow at least one of the following parameters 1 and 2:

[0251] [[parameter 1]] At least one of the PL-RS associated with / included in the UL / joint TCI state in each BWP / CC and its corresponding TPC parameters (e.g., P0 / alpha / closed-loop index setting / set) is used in the TPC calculation for the configured set of BWP / CC (CC-specific PL-RS / CC-specific TPC parameters). The BWP / CC of that PL-RS / TPC parameters may be different from the BWP / CC of the target PUSCH / PUCCH / SRS.

[0252] The PL-RS included in / associated with the TCI state pool for each BWP / CC may be explicitly configured. Only one PL-RS is configured per QCL / TCI state, and the UE considers that PL-RS to be on the indicated CC, and that PL-RS may be used for any target CC.

[0253] 11A shows an example (parameter 1) where for a CC-specific TCI state pool, the PL-RS configuration on each BWP / CC includes one (same) cell / BWP ID (BWP ID=1, CC ID=1). The TCI state configured for BWP1 in CC1 and the TCI state configured for BWP1 in CC2 are each associated / included in the (same) PL-RS for BWP1 in CC1.

[0254] [[parameter 2]] At least one of the PL-RS associated with / included in the CC-specific RS (QCL type A / D RS) on each BWP / CC and its corresponding TPC parameters (e.g., P0 / alpha / closed-loop index setting / set) is used in the TPC calculation for the configured set of BWPs / CCs (CC-common PL-RS / CC-common TPC parameters). The BWP / CC of that PL-RS / TPC parameters may be the same as the BWP / CC of the target PUSCH / PUCCH / SRS.

[0255] The PL-RS included / associated with the TCI state pool for each BWP / CC may be explicitly configured. Only one PL-RS may be configured per QCL / TCI state, and the UE may consider that PL-RS to be on the target CC. There may be no cell / BWP ID in the PL-RS configuration.

[0256] Figure 12A shows an example (parameter 2) where the PL-RS configuration on a BWP / CC (BWP1 in CC1) for a CC-specific TCI state pool may or may not include its cell / BWP ID (BWP ID=1, CC ID=1). The TCI state configured for BWP1 in CC1 is associated / included in the PL-RS for BWP1 in CC1. The TCI state configured for BWP1 in CC2 is associated / included in the PL-RS for BWP1 in CC2.

[0257] In these examples, PL-RS may be read as PL-RS and TPC parameters (e.g., P0 / alpha / closed loop index setting / set).

[0258] [Case 2] For a CC-common TCI state pool in the unified TCI framework within CA, a method for deriving / determining the PL-RS for the PUSCH / PUCCH / SRS on each BWP / CC may be specified. In the PDSCH configuration (PDSCH-Config) for each BWP / CC, if there is no RRC-configured TCI state pool and it is replaced by a reference to the RRC-configured TCI state pool in the reference BWP / CC, the PL-RS / TPC parameters (e.g., setting / setting of P0 / alpha / closed-loop index) may be determined from the indicated TCI state on the reference BWP / CC. The PL-RS / TPC parameters may follow at least one of parameters 1 and 2 below.

[0259] [[parameter 1]] At least one of the PL-RS associated with / included in the UL / joint TCI state in the reference BWP / CC and its corresponding TPC parameters (e.g., P0 / alpha / closed-loop index setting / set) is used for TPC calculation for the configured set of BWP / CC (CC-specific PL-RS / CC-specific TPC parameters). The BWP / CC of that PL-RS / TPC parameters may be different from the BWP / CC of the target PUSCH / PUCCH / SRS.

[0260] The PL-RS included in / associated with the TCI state pool for the reference BWP / CC may be explicitly configured. Only one PL-RS is configured per QCL / TCI state, and the UE considers that PL-RS to be on the indicated CC, and that PL-RS may be used for any target CC.

[0261] Figure 11B shows an example (parameter 1) where for a CC common TCI state pool, the PL-RS configuration on each BWP / CC includes one (same) cell / BWP ID. The TCI state configured for BWP1 in CC1 and the TCI state configured for BWP1 in CC2 are each associated / included in the (same) PL-RS for BWP1 in CC1.

[0262] [[parameter 2]] At least one of the PL-RS associated with / included in the CC-specific RS (QCL type A / D RS) on each BWP / CC and its corresponding TPC parameters (e.g., P0 / alpha / closed-loop index setting / set) is used in the TPC calculation for the configured set of BWPs / CCs (CC-common PL-RS / CC-common TPC parameters). The BWP / CC of that PL-RS / TPC parameters may be the same as the BWP / CC of the target PUSCH / PUCCH / SRS.

[0263] The PL-RS included / associated in the TCI state pool for the reference BWP / CC may be explicitly configured. Only one PL-RS may be configured per QCL / TCI state and the UE may consider that PL-RS to be on the target CC. There may be no cell / BWP ID in the PL-RS configuration.

[0264] Figure 12B shows an example where the PL-RS configuration on a BWP / CC (BWP1 in CC1) does not include a cell / BWP ID for the CC common TCI state pool (parameter 2). The TCI state configured for BWP1 in CC1 is associated / included in the PL-RS for BWP1 in CC1 and the PL-RS for BWP1 in CC2.

[0265] In these examples, PL-RS may be read as PL-RS and TPC parameters (e.g., P0 / alpha / closed loop index setting / set).

[0266] <PL Settings> The PL-RS may or may not be set in the QCL information (QCL-Info).

[0267] New QCL information (e.g., QCL-Info_r17) may include the PL-RS. If there is no BWP / CC ID (bwp-Id / cell) in QCL-Info_r17 associated with the PL-RS, the UE may assume that the PL-RS is in the BWP / CC to which the TCI state applies. Otherwise, the UE may assume that the PL-RS is in the indicated BWP / CC. If parameter 2 above is specified, there may always be no BWP / CC ID in QCL-Info_r17 associated with the PL-RS.

[0268] 13A, QCL-Info_r17 includes at least one of a TCI state ID (tci-StateId_r17), a TCI state type (tci-StateType), a QCL type 1 (qcl-Type1), and a QCL type 2 (qcl-Type2). A PL-RS may be configured in either qcl-Type1 or qcl-Type2. It is not necessary to configure a PL-RS in both qcl-Type1 and qcl-Type2.

[0269] In the example of FIG. 13B , QCL-Info_r17 includes at least one of a cell ID (cell), a BWP ID (bwp-Id), a reference signal (source RS, referenceSignal), a QCL type (qcl-Type), and a pathloss RS (pathlossRS). The referenceSignal for the DL TCI state or the joint TCI state may include a non-zero power (NZP) CSI-RS resource ID (NZP-CSI-RS-ResourceId (CSI-RS for beam management or CSI-RS for tracking)). The referenceSignal for the UL TCI state may include one of the NZP-CSI-RS-ResourceId (CSI-RS for beam management or CSI-RS for tracking), an SSB index (SSB-Index), and an SRS resource ID (SRS-ResourceId (SRS for beam management, applicable only to the UL TCI state)). The qcl-Type may include one of typeA, typeB, and typeD. If pathlossRS is included in the UL TCI state or the joint TCI state, pathlossRS may include one of SSB-Index, NZP-CSI-RS-ResourceId (periodic CSI-RS).

[0270] New QCL information (e.g., QCL-Info_r17) may include the PL-RS. If there is no BWP / CC ID (bwp-Id / cell) in the PL-RS, the UE may assume that the PL-RS is in the BWP / CC to which the TCI state applies. Otherwise, the UE may assume that the PL-RS is in the indicated BWP / CC. If parameter 2 above is specified, there may always be no BWP / CC ID in the PL-RS. An explicit RRC parameter for the BWP / CC ID may not be required.

[0271] In the example of Figure 14, PL-RS does not include a BWP / CC ID. QCL-Info_r17 includes at least one of tci-StateId_r17, tci-StateType, qcl-Type1, qcl-Type2, and pathlossRS. If pathlossRS is included in the UL TCI state or the joint TCI state, pathlossRS may include one of SSB-Index and NZP-CSI-RS-ResourceId (periodic CSI-RS). pathlossRS may or may not include a BWP / CC ID (bwp-Id, cell).

[0272] <Other embodiments> 《UE capability information / upper layer parameters》 Higher layer parameters (RRC IEs) / UE capabilities corresponding to the functions (features) in each of the above embodiments may be defined. The higher layer parameters may indicate whether the functions are enabled. The UE capabilities may indicate whether the UE supports the functions.

[0273] A UE for which a corresponding upper layer parameter is configured may perform the function. Alternatively, it may be specified that a UE for which a corresponding upper layer parameter is not configured shall not perform the function (for example, in accordance with Rel. 15 / 16).

[0274] A UE that reports / transmits a UE capability indicating that it supports the function may perform the function. It may also be specified that "a UE that does not report a UE capability indicating that it supports the function shall not perform the function (e.g., in accordance with Rel. 15 / 16)."

[0275] If the UE reports / transmits a UE capability indicating that it supports the function and the corresponding upper layer parameter is configured, the UE may perform the function. It may also be specified that "if the UE does not report / transmit a UE capability indicating that it supports the function or if the corresponding upper layer parameter is not configured, the UE shall not perform the function (e.g., in accordance with Rel. 15 / 16)."

[0276] Which embodiment / option / choice / function of the above multiple embodiments is used may be configured by higher layer parameters, may be reported by the UE as a UE capability, may be specified in a specification, or may be determined by the reported UE capability and the configuration of higher layer parameters.

[0277] The UE capabilities may indicate whether it supports at least one of the following functions: · Unified TCI framework. · Joint TCI and / or separate TCI. · CC-common TCI state pool and / or CC-specific TCI state pool. · CC common RS and / or CC specific RS.

[0278] The UE capability may indicate at least one of the following values: · Number of TCI states (maximum) that can be set per BWP / per CC / per band / per UE. · Maximum number of active TCI states per BWP / per CC / per band / per UE. - Maximum number of TCI state pools (TCI state lists) across a set of BWPs / CCs.

[0279] The above UE capabilities / upper layer parameters allow the UE to achieve the above functions while maintaining compatibility with existing specifications.

[0280] (wireless communication system) The configuration of a wireless communication system according to an embodiment of the present disclosure will be described below. In this wireless communication system, communication is performed using any one of the wireless communication methods according to the above embodiments of the present disclosure or a combination thereof.

[0281] 15 is a diagram illustrating an example of a schematic configuration of a wireless communication system according to an embodiment. The wireless communication system 1 may be a system that realizes communication using Long Term Evolution (LTE) or 5th generation mobile communication system New Radio (5G NR) specified by the Third Generation Partnership Project (3GPP).

[0282] Furthermore, the wireless communication system 1 may support dual connectivity between multiple Radio Access Technologies (RATs) (Multi-RAT Dual Connectivity (MR-DC)). MR-DC may include dual connectivity between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA)) and NR (E-UTRA-NR Dual Connectivity (EN-DC)), dual connectivity between NR and LTE (NR-E-UTRA Dual Connectivity (NE-DC)), etc.

[0283] In EN-DC, the LTE (E-UTRA) base station (eNB) is the master node (MN), and the NR base station (gNB) is the secondary node (SN). In NE-DC, the NR base station (gNB) is the MN, and the LTE (E-UTRA) base station (eNB) is the SN.

[0284] The wireless communication system 1 may support dual connectivity between multiple base stations within the same RAT (for example, dual connectivity in which both the MN and the SN are NR base stations (gNBs) (NR-NR Dual Connectivity (NN-DC))).

[0285] The wireless communication system 1 may include a base station 11 that forms a macrocell C1 with a relatively wide coverage, and base stations 12 (12a-12c) that are located within the macrocell C1 and form small cells C2 that are smaller than the macrocell C1. A user terminal 20 may be located within at least one of the cells. The locations and numbers of the cells and user terminals 20 are not limited to the embodiment shown in the figure. Hereinafter, when there is no need to distinguish between the base stations 11 and 12, they will be collectively referred to as base station 10.

[0286] The user terminal 20 may be connected to at least one of the multiple base stations 10. The user terminal 20 may utilize at least one of carrier aggregation (CA) using multiple component carriers (CC) and dual connectivity (DC).

[0287] Each CC may be included in at least one of a first frequency band (Frequency Range 1 (FR1)) and a second frequency band (Frequency Range 2 (FR2)). The macro cell C1 may be included in FR1, and the small cell C2 may be included in FR2. For example, FR1 may be a frequency band of 6 GHz or less (sub-6 GHz), and FR2 may be a frequency band above 24 GHz (above-24 GHz). Note that the frequency bands and definitions of FR1 and FR2 are not limited to these, and for example, FR1 may be a frequency band higher than FR2.

[0288] Furthermore, the user terminal 20 may perform communication using at least one of Time Division Duplex (TDD) and Frequency Division Duplex (FDD) in each CC.

[0289] The multiple base stations 10 may be connected by wire (for example, optical fiber conforming to the Common Public Radio Interface (CPRI), an X2 interface, or the like) or wirelessly (for example, NR communication). For example, when NR communication is used as a backhaul between the base stations 11 and 12, the base station 11 corresponding to the upper station may be called an Integrated Access Backhaul (IAB) donor, and the base station 12 corresponding to the relay station (relay) may be called an IAB node.

[0290] The base station 10 may be connected to the core network 30 directly or via another base station 10. The core network 30 may include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), a Next Generation Core (NGC), and the like.

[0291] The user terminal 20 may be a terminal compatible with at least one of communication methods such as LTE, LTE-A, and 5G.

[0292] An Orthogonal Frequency Division Multiplexing (OFDM)-based radio access scheme may be used in the radio communication system 1. For example, Cyclic Prefix OFDM (CP-OFDM), Discrete Fourier Transform Spread OFDM (DFT-s-OFDM), Orthogonal Frequency Division Multiple Access (OFDMA), Single Carrier Frequency Division Multiple Access (SC-FDMA), or the like may be used in at least one of the downlink (DL) and the uplink (UL).

[0293] The radio access scheme may also be called a waveform. Note that in the wireless communication system 1, other radio access schemes (for example, other single-carrier transmission schemes, other multi-carrier transmission schemes) may be used as the UL and DL radio access schemes.

[0294] In the wireless communication system 1, a downlink shared channel (Physical Downlink Shared Channel (PDSCH)) shared by each user terminal 20, a broadcast channel (Physical Broadcast Channel (PBCH)), a downlink control channel (Physical Downlink Control Channel (PDCCH)), etc. may be used as the downlink channel.

[0295] Furthermore, in the wireless communication system 1, an uplink shared channel (Physical Uplink Shared Channel (PUSCH)) shared by each user terminal 20, an uplink control channel (Physical Uplink Control Channel (PUCCH)), a random access channel (Physical Random Access Channel (PRACH)), etc. may be used as an uplink channel.

[0296] The PDSCH transmits user data, higher layer control information, System Information Block (SIB), etc. The PUSCH may transmit user data, higher layer control information, etc. Furthermore, the PBCH may transmit Master Information Block (MIB).

[0297] Lower layer control information may be transmitted by the PDCCH. The lower layer control information may include, for example, Downlink Control Information (DCI) including scheduling information for at least one of the PDSCH and the PUSCH.

[0298] Note that the DCI for scheduling the PDSCH may be referred to as a DL assignment, a DL DCI, etc., and the DCI for scheduling the PUSCH may be referred to as an UL grant, a UL DCI, etc. Note that the PDSCH may be interpreted as DL data, and the PUSCH may be interpreted as UL data.

[0299] A control resource set (CORESET) and a search space may be used to detect the PDCCH. The CORESET corresponds to resources to search for DCI. The search space corresponds to a search region and a search method for PDCCH candidates. One CORESET may be associated with one or more search spaces. The UE may monitor a CORESET associated with a certain search space based on the search space configuration.

[0300] One search space may correspond to PDCCH candidates corresponding to one or more aggregation levels. One or more search spaces may be called a search space set. Note that the terms "search space," "search space set," "search space setting," "search space set setting," "CORESET," "CORESET setting," etc. in the present disclosure may be read interchangeably.

[0301] The PUCCH may transmit uplink control information (UCI) including at least one of channel state information (CSI), acknowledgement information (which may be called, for example, Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK), ACK / NACK, etc.), and scheduling request (SR). The PRACH may transmit a random access preamble for establishing a connection with a cell.

[0302] In the present disclosure, downlink, uplink, etc. may be expressed without adding "link." Also, various channels may be expressed without adding "Physical" to the beginning.

[0303] In the wireless communication system 1, a synchronization signal (SS), a downlink reference signal (DL-RS), etc. may be transmitted. In the wireless communication system 1, a cell-specific reference signal (CRS), a channel state information reference signal (CSI-RS), a demodulation reference signal (DMRS), a positioning reference signal (PRS), a phase tracking reference signal (PTRS), etc. may be transmitted as DL-RS.

[0304] The synchronization signal may be, for example, at least one of a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS). A signal block including the SS (PSS, SSS) and the PBCH (and DMRS for the PBCH) may be referred to as an SS / PBCH block, an SS Block (SSB), or the like. Note that the SS, SSB, and the like may also be referred to as reference signals.

[0305] Furthermore, in the wireless communication system 1, a sounding reference signal (SRS), a demodulation reference signal (DMRS), etc. may be transmitted as an uplink reference signal (UL-RS). Note that the DMRS may also be called a user equipment-specific reference signal (UE-specific reference signal).

[0306] (base station) 16 is a diagram showing an example of the configuration of a base station according to an embodiment. The base station 10 includes a control unit 110, a transceiver unit 120, a transceiver antenna 130, and a transmission line interface 140. Note that the base station may include one or more of each of the control unit 110, the transceiver unit 120, the transceiver antenna 130, and the transmission line interface 140.

[0307] In this example, the functional blocks of the characteristic parts of the present embodiment are mainly shown, and it may be assumed that the base station 10 also has other functional blocks necessary for wireless communication. Some of the processing of each unit described below may be omitted.

[0308] The control unit 110 performs overall control of the base station 10. The control unit 110 can be configured from a controller, a control circuit, and the like that are explained based on common understanding in the technical field to which the present disclosure relates.

[0309] The control unit 110 may control signal generation, scheduling (e.g., resource allocation, mapping), etc. The control unit 110 may control transmission and reception using the transceiver unit 120, the transceiver antenna 130, and the transmission path interface 140, measurement, etc. The control unit 110 may generate data to be transmitted as signals, control information, sequences, etc., and transfer them to the transceiver unit 120. The control unit 110 may perform call processing (setting up, releasing, etc.) of communication channels, status management of the base station 10, management of radio resources, etc.

[0310] The transceiver unit 120 may include a baseband unit 121, a radio frequency (RF) unit 122, and a measurement unit 123. The baseband unit 121 may include a transmission processing unit 1211 and a reception processing unit 1212. The transceiver unit 120 may be configured with a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transceiver circuit, etc., which are described based on common understanding in the technical field related to the present disclosure.

[0311] The transmitting / receiving unit 120 may be configured as an integrated transmitting / receiving unit, or may be composed of a transmitting unit and a receiving unit. The transmitting unit may be composed of a transmission processing unit 1211 and an RF unit 122. The receiving unit may be composed of a reception processing unit 1212, an RF unit 122, and a measurement unit 123.

[0312] The transmitting and receiving antenna 130 can be configured from an antenna described based on common understanding in the technical field to which the present disclosure pertains, such as an array antenna.

[0313] The transceiver 120 may transmit the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc. The transceiver 120 may receive the above-mentioned uplink channel, uplink reference signal, etc.

[0314] The transceiver 120 may form at least one of a transmission beam and a reception beam using digital beamforming (for example, precoding), analog beamforming (for example, phase rotation), or the like.

[0315] The transceiver 120 (transmission processing unit 1211) may perform Packet Data Convergence Protocol (PDCP) layer processing, Radio Link Control (RLC) layer processing (e.g., RLC retransmission control), Medium Access Control (MAC) layer processing (e.g., HARQ retransmission control), etc. on data, control information, etc. obtained from the control unit 110, and generate a bit string to be transmitted.

[0316] The transceiver 120 (transmission processor 1211) may perform transmission processing such as channel coding (which may include error correction coding), modulation, mapping, filtering, Discrete Fourier Transform (DFT) processing (if necessary), Inverse Fast Fourier Transform (IFFT) processing, precoding, and digital-to-analog conversion on the bit string to be transmitted, and output a baseband signal.

[0317] The transmitting / receiving unit 120 (RF unit 122) may perform modulation to a radio frequency band, filtering, amplification, etc. on the baseband signal, and transmit the radio frequency band signal via the transmitting / receiving antenna .

[0318] On the other hand, the transmitting / receiving unit 120 (RF unit 122) may perform amplification, filtering, demodulation to a baseband signal, etc. on the radio frequency band signal received by the transmitting / receiving antenna .

[0319] The transceiver 120 (reception processing unit 1212) may apply reception processing such as analog-to-digital conversion, Fast Fourier Transform (FFT) processing, Inverse Discrete Fourier Transform (IDFT) processing (if necessary), filtering, demapping, demodulation, decoding (which may include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal, thereby acquiring user data, etc.

[0320] The transceiver 120 (measurement unit 123) may perform measurements on the received signal. For example, the measurement unit 123 may perform Radio Resource Management (RRM) measurements, Channel State Information (CSI) measurements, etc. based on the received signal. The measurement unit 123 may measure received power (e.g., Reference Signal Received Power (RSRP)), received quality (e.g., Reference Signal Received Quality (RSRQ), Signal to Interference plus Noise Ratio (SINR), Signal to Noise Ratio (SNR)), signal strength (e.g., Received Signal Strength Indicator (RSSI)), propagation path information (e.g., CSI), etc. The measurement results may be output to the control unit 110.

[0321] The transmission path interface 140 may transmit and receive signals (backhaul signaling) between devices included in the core network 30, other base stations 10, etc., and may acquire and transmit user data (user plane data), control plane data, etc. for the user terminal 20.

[0322] The transmitting section and receiving section of the base station 10 in the present disclosure may be configured by at least one of the transmitting / receiving section 120, the transmitting / receiving antenna 130, and the transmission path interface 140.

[0323] The transceiver 120 may transmit one or more transmission configuration indication (TCI) state lists for the downlink and uplink of one or more cells among a plurality of cells, and transmit indications of one or more TCI states in the one or more TCI state lists. The controller 110 may apply the one or more TCI states to some or all of the plurality of cells.

[0324] The transceiver 120 may transmit one or more transmission configuration indication (TCI) state lists for uplinks of one or more cells among a plurality of cells, and transmit indications of one or more TCI states in the one or more TCI state lists. The controller 110 may apply at least one parameter of a path loss reference signal and a transmission power control parameter based on the one or more TCI states to some or all of the plurality of cells.

[0325] (user terminal) 17 is a diagram showing an example of the configuration of a user terminal according to one embodiment. The user terminal 20 includes a control unit 210, a transceiver unit 220, and a transceiver antenna 230. Note that the user terminal 20 may include one or more of each of the control unit 210, the transceiver unit 220, and the transceiver antenna 230.

[0326] Note that this example mainly shows functional blocks of the characteristic parts of the present embodiment, and it may be assumed that the user terminal 20 also has other functional blocks necessary for wireless communication. Some of the processing of each unit described below may be omitted.

[0327] The control unit 210 performs overall control of the user terminal 20. The control unit 210 can be configured from a controller, a control circuit, and the like that are explained based on common understanding in the technical field to which the present disclosure relates.

[0328] The control unit 210 may control signal generation, mapping, etc. The control unit 210 may also control transmission and reception, measurement, etc. using the transceiver unit 220 and the transceiver antenna 230. The control unit 210 may generate data, control information, sequences, etc. to be transmitted as signals, and transfer them to the transceiver unit 220.

[0329] The transceiver unit 220 may include a baseband unit 221, an RF unit 222, and a measurement unit 223. The baseband unit 221 may include a transmission processing unit 2211 and a reception processing unit 2212. The transceiver unit 220 may be configured from a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transceiver circuit, etc., which are described based on common understanding in the technical field related to the present disclosure.

[0330] The transmitting / receiving unit 220 may be configured as an integrated transmitting / receiving unit, or may be composed of a transmitting unit and a receiving unit. The transmitting unit may be composed of a transmission processing unit 2211 and an RF unit 222. The receiving unit may be composed of a reception processing unit 2212, an RF unit 222, and a measurement unit 223.

[0331] The transmitting / receiving antenna 230 can be configured from an antenna described based on common understanding in the technical field to which the present disclosure pertains, such as an array antenna.

[0332] The transceiver 220 may receive the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc. The transceiver 220 may transmit the above-mentioned uplink channel, uplink reference signal, etc.

[0333] The transceiver 220 may form at least one of a transmission beam and a reception beam using digital beamforming (for example, precoding), analog beamforming (for example, phase rotation), or the like.

[0334] The transceiver 220 (transmission processing unit 2211) may perform PDCP layer processing, RLC layer processing (e.g., RLC retransmission control), MAC layer processing (e.g., HARQ retransmission control), etc. on data, control information, etc. obtained from the control unit 210, and generate a bit string to be transmitted.

[0335] The transceiver 220 (transmission processor 2211) may perform transmission processing such as channel coding (which may include error correction coding), modulation, mapping, filtering, DFT processing (if necessary), IFFT processing, precoding, and digital-to-analog conversion on the bit string to be transmitted, and output a baseband signal.

[0336] Whether or not to apply DFT processing may be based on the setting of transform precoding. When transform precoding is enabled for a certain channel (e.g., PUSCH), the transceiver unit 220 (transmission processing unit 2211) may perform DFT processing as the transmission processing to transmit the channel using a DFT-s-OFDM waveform, and when transform precoding is not enabled, the transceiver unit 220 may not perform DFT processing as the transmission processing.

[0337] The transmitting / receiving unit 220 (RF unit 222) may perform modulation to a radio frequency band, filtering, amplification, etc. on the baseband signal, and transmit the radio frequency band signal via the transmitting / receiving antenna 230.

[0338] On the other hand, the transmitting / receiving unit 220 (RF unit 222) may perform amplification, filtering, demodulation to a baseband signal, etc. on the radio frequency band signal received by the transmitting / receiving antenna 230.

[0339] The transceiver 220 (reception processing unit 2212) may apply reception processing such as analog-to-digital conversion, FFT processing, IDFT processing (if necessary), filtering, demapping, demodulation, decoding (which may include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal to acquire user data, etc.

[0340] The transceiver 220 (measurement unit 223) may perform measurements on the received signal. For example, the measurement unit 223 may perform RRM measurement, CSI measurement, etc. based on the received signal. The measurement unit 223 may measure received power (e.g., RSRP), received quality (e.g., RSRQ, SINR, SNR), signal strength (e.g., RSSI), propagation path information (e.g., CSI), etc. The measurement results may be output to the control unit 210.

[0341] The transmitting section and receiving section of the user terminal 20 in the present disclosure may be configured by at least one of the transmitting / receiving section 220 and the transmitting / receiving antenna 230.

[0342] The transceiver 220 may receive one or more transmission configuration indication (TCI) state lists (e.g., joint TCI state pools / separate TCI state pools) for downlink and uplink of one or more cells among a plurality of cells (e.g., a set of CCs / BWPs), and may receive one or more TCI state indications (e.g., MAC CE / DCI) in the one or more TCI state lists. The controller 210 may apply the one or more TCI states to some or all of the plurality of cells.

[0343] The one or more TCI state lists may indicate a list of TCI states for each of the multiple cells (e.g., a CC-specific TCI state pool) or a list of TCI states common to the multiple cells (e.g., a CC-common TCI state pool).

[0344] The one or more TCI states may indicate a reference signal on one cell in the plurality of cells (eg, a CC-specific RS) or a reference signal common to the plurality of cells (eg, a CC-common RS).

[0345] The one or more TCI state lists may be a downlink TCI state list (e.g., a separate DL TCI state pool) and an uplink TCI state list (e.g., a separate UL TCI state pool). The one or more TCI states may be a downlink TCI state and an uplink TCI state.

[0346] The transceiver 220 may receive one or more transmission configuration indication (TCI) state lists (e.g., joint TCI state pool / separate TCI state pool) for uplink of one or more cells among a plurality of cells (e.g., a set of CC / BWP), and may receive one or more TCI state indications (e.g., MAC CE / DCI) in the one or more TCI state lists. The controller 210 may apply at least one parameter of a path loss reference signal (e.g., PL-RS) and a transmit power control parameter (e.g., setting of P0 / alpha / closed loop index) to some or all of the plurality of cells based on the one or more TCI states.

[0347] The one or more TCI state lists may be a list of TCI states for each of the multiple cells (e.g., a CC-specific TCI state pool), or a list of TCI states common to the multiple cells (e.g., a CC-common TCI state pool).

[0348] The parameter may be a parameter for one cell in the plurality of cells (e.g., a CC-specific PL-RS / CC-specific TPC parameter), or a parameter common to the plurality of cells (e.g., a CC-common PL-RS / CC-common TPC parameter).

[0349] The parameters may be included in or associated with the one or more TCI states.

[0350] (Hardware configuration) The block diagrams used to explain the above embodiments show functional blocks. These functional blocks (components) are realized by any combination of at least one of hardware and software. Furthermore, the method for realizing each functional block is not particularly limited. That is, each functional block may be realized using a single device that is physically or logically coupled, or may be realized using two or more physically or logically separated devices that are directly or indirectly connected (for example, using wires, wirelessly, etc.) and these multiple devices. The functional block may also be realized by combining the single device or multiple devices with software.

[0351] Here, the functions include, but are not limited to, judgment, determination, judgment, calculation, computation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, resolution, selection, election, establishment, comparison, assumption, expectation, deeming, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, and assignment. For example, a functional block (component) that performs transmission may be called a transmitting unit, transmitter, etc. As mentioned above, the implementation method of each is not particularly limited.

[0352] For example, a base station, a user terminal, etc. according to an embodiment of the present disclosure may function as a computer that performs processing of the wireless communication method of the present disclosure. Fig. 18 is a diagram illustrating an example of the hardware configuration of a base station and a user terminal according to an embodiment. The above-described base station 10 and user terminal 20 may be physically configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, etc.

[0353] In the present disclosure, terms such as apparatus, circuit, device, section, and unit may be used interchangeably. The hardware configurations of the base station 10 and the user terminal 20 may be configured to include one or more of the devices shown in the drawings, or may be configured to exclude some of the devices.

[0354] For example, although only one processor 1001 is shown, there may be multiple processors. Furthermore, processing may be performed by one processor, or processing may be performed by two or more processors simultaneously, serially, or in other ways. Furthermore, processor 1001 may be implemented by one or more chips.

[0355] Each function in the base station 10 and the user terminal 20 is realized, for example, by loading predetermined software (programs) onto hardware such as a processor 1001 and a memory 1002, causing the processor 1001 to perform calculations, control communication via the communication device 1004, and control at least one of reading and writing data in the memory 1002 and the storage 1003.

[0356] The processor 1001, for example, runs an operating system to control the entire computer. The processor 1001 may be configured as a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic unit, a register, etc. For example, at least a part of the above-mentioned control unit 110 (210), transmission / reception unit 120 (220), etc. may be realized by the processor 1001.

[0357] The processor 1001 also reads programs (program codes), software modules, data, etc. from at least one of the storage 1003 and the communication device 1004 into the memory 1002, and executes various processes in accordance with these. The programs used are those that cause a computer to execute at least some of the operations described in the above-described embodiments. For example, the control unit 110 (210) may be realized by a control program stored in the memory 1002 and running on the processor 1001, and the other functional blocks may be realized in a similar manner.

[0358] The memory 1002 is a computer-readable recording medium and may be configured by at least one of, for example, a read-only memory (ROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), a random access memory (RAM), or other suitable storage medium. The memory 1002 may also be referred to as a register, a cache, a main memory, or the like. The memory 1002 may store executable programs (program codes), software modules, and the like for implementing a wireless communication method according to an embodiment of the present disclosure.

[0359] Storage 1003 is a computer-readable recording medium and may be constituted by at least one of, for example, a flexible disk, a floppy disk, a magneto-optical disk (e.g., a compact disc (e.g., a Compact Disc ROM (CD-ROM)), a digital versatile disc, a Blu-ray disc), a removable disk, a hard disk drive, a smart card, a flash memory device (e.g., a card, stick, key drive), a magnetic stripe, a database, a server, or other suitable storage medium. Storage 1003 may also be referred to as a secondary storage device.

[0360] The communication device 1004 is hardware (transmission / reception device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as, for example, a network device, a network controller, a network card, or a communication module. The communication device 1004 may be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc. to realize at least one of frequency division duplex (FDD) and time division duplex (TDD). For example, the above-mentioned transmission / reception unit 120 (220), transmission / reception antenna 130 (230), etc. may be realized by the communication device 1004. The transmission / reception unit 120 (220) may be implemented as a transmission unit 120a (220a) and a reception unit 120b (220b) that are physically or logically separated.

[0361] The input device 1005 is an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that receives input from the outside. The output device 1006 is an output device (for example, a display, a speaker, a light emitting diode (LED) lamp, etc.) that outputs to the outside. The input device 1005 and the output device 1006 may be integrated into one device (for example, a touch panel).

[0362] Furthermore, each device, such as the processor 1001 and the memory 1002, is connected by a bus 1007 for communicating information. The bus 1007 may be configured using a single bus, or may be configured using different buses between each device.

[0363] Furthermore, the base station 10 and the user terminal 20 may be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), or a field programmable gate array (FPGA), and some or all of the functional blocks may be realized using such hardware. For example, the processor 1001 may be implemented using at least one of these pieces of hardware.

[0364] (Variation) Note that terms explained in the present disclosure and terms necessary for understanding the present disclosure may be replaced with terms having the same or similar meanings. For example, a channel, a symbol, and a signal (signal or signaling) may be interchangeable. A signal may also be a message. A reference signal may be abbreviated as RS, and may also be called a pilot, pilot signal, etc. depending on the applicable standard. A component carrier (CC) may also be called a cell, frequency carrier, carrier frequency, etc.

[0365] A radio frame may be composed of one or more periods (frames) in the time domain. Each of the one or more periods (frames) constituting a radio frame may be called a subframe. Furthermore, a subframe may be composed of one or more slots in the time domain. A subframe may have a fixed time length (e.g., 1 ms) that is independent of numerology.

[0366] Here, the numerology may be a communication parameter applied to at least one of transmission and reception of a signal or channel, and may indicate at least one of, for example, a subcarrier spacing (SCS), a bandwidth, a symbol length, a cyclic prefix length, a transmission time interval (TTI), the number of symbols per TTI, a radio frame structure, a specific filtering process performed by a transceiver in the frequency domain, and a specific windowing process performed by a transceiver in the time domain.

[0367] A slot may be composed of one or more symbols in the time domain (such as an Orthogonal Frequency Division Multiplexing (OFDM) symbol or a Single Carrier Frequency Division Multiple Access (SC-FDMA) symbol), and may be a time unit based on numerology.

[0368] A slot may include multiple minislots. Each minislot may consist of one or multiple symbols in the time domain. A minislot may also be called a subslot. A minislot may consist of fewer symbols than a slot. A PDSCH (or PUSCH) transmitted in a time unit larger than a minislot may be called PDSCH (PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using a minislot may be called PDSCH (PUSCH) mapping type B.

[0369] A radio frame, a subframe, a slot, a minislot, and a symbol all represent time units for transmitting signals. The radio frame, the subframe, the slot, the minislot, and the symbol may be referred to by other names corresponding to the radio frame, the subframe, the slot, the minislot, and the symbol. Note that the time units such as a frame, a subframe, a slot, a minislot, and a symbol in the present disclosure may be interchangeable.

[0370] For example, one subframe may be referred to as a TTI, or multiple consecutive subframes may be referred to as a TTI, or one slot or one minislot may be referred to as a TTI. That is, at least one of a subframe and a TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (for example, 1-13 symbols), or a period longer than 1 ms. Note that the unit representing the TTI may be called a slot, minislot, etc., instead of a subframe.

[0371] Here, TTI refers to, for example, the smallest time unit for scheduling in wireless communication. For example, in an LTE system, a base station performs scheduling to allocate radio resources (such as frequency bandwidth and transmission power that can be used by each user terminal) to each user terminal in TTI units. However, the definition of TTI is not limited to this.

[0372] The TTI may be a transmission time unit for a channel-encoded data packet (transport block), a code block, a code word, etc., or may be a processing unit for scheduling, link adaptation, etc. When a TTI is given, the time interval (e.g., the number of symbols) to which a transport block, a code block, a code word, etc. is actually mapped may be shorter than the TTI.

[0373] When one slot or one minislot is called a TTI, one or more TTIs (i.e., one or more slots or one or more minislots) may be the minimum time unit for scheduling. Also, the number of slots (minislots) constituting the minimum time unit for scheduling may be controlled.

[0374] A TTI having a time length of 1 ms may be called a regular TTI (TTI in 3GPP Rel. 8-12), normal TTI, long TTI, regular subframe, normal subframe, long subframe, slot, etc. A TTI shorter than a regular TTI may be called a shortened TTI, short TTI, partial or fractional TTI, shortened subframe, short subframe, minislot, subslot, slot, etc.

[0375] In addition, a long TTI (e.g., a normal TTI, a subframe, etc.) may be interpreted as a TTI having a time length of more than 1 ms, and a short TTI (e.g., a shortened TTI, etc.) may be interpreted as a TTI having a TTI length shorter than the TTI length of a long TTI and equal to or greater than 1 ms.

[0376] A resource block (RB) is a resource allocation unit in the time domain and the frequency domain, and may include one or more consecutive subcarriers in the frequency domain. The number of subcarriers included in an RB may be the same regardless of numerology, for example, 12. The number of subcarriers included in an RB may also be determined based on numerology.

[0377] In addition, an RB may include one or more symbols in the time domain and may have a length of one slot, one minislot, one subframe, or one TTI. One TTI, one subframe, etc. may each be composed of one or more resource blocks.

[0378] Note that one or more RBs may also be called a physical resource block (PRB), a sub-carrier group (SCG), a resource element group (REG), a PRB pair, an RB pair, etc.

[0379] Furthermore, a resource block may be composed of one or more resource elements (REs). For example, one RE may be a radio resource region of one subcarrier and one symbol.

[0380] A Bandwidth Part (BWP), which may also be referred to as a fractional bandwidth, may represent a subset of contiguous common resource blocks (RBs) for a given numerology on a given carrier, where the common RBs may be identified by their index relative to a common reference point of the carrier. PRBs may be defined in a given BWP and numbered within that BWP.

[0381] The BWP may include an UL BWP (a BWP for UL) and a DL BWP (a BWP for DL). One or more BWPs may be configured for a UE within one carrier.

[0382] At least one of the configured BWPs may be active, and the UE may not expect to transmit or receive a given signal / channel outside the active BWP. Note that the terms "cell," "carrier," etc. in this disclosure may be read as "BWP."

[0383] The above-described structures of radio frames, subframes, slots, minislots, symbols, etc. are merely examples. For example, the number of subframes included in a radio frame, the number of slots per subframe or radio frame, the number of minislots included in a slot, the number of symbols and RBs included in a slot or minislot, the number of subcarriers included in an RB, the number of symbols in a TTI, the symbol length, the cyclic prefix (CP) length, etc. may be changed in various ways.

[0384] Furthermore, the information, parameters, etc. described in the present disclosure may be expressed using absolute values, may be expressed using relative values ​​from a predetermined value, or may be expressed using other corresponding information. For example, a radio resource may be indicated by a predetermined index.

[0385] The names used for parameters and the like in this disclosure are not intended to be limiting in any way. Furthermore, the mathematical expressions and the like using these parameters may differ from those explicitly disclosed in this disclosure. The various channels (PUCCH, PDCCH, etc.) and information elements may be identified by any suitable names, and therefore the various names assigned to these various channels and information elements are not intended to be limiting in any way.

[0386] The information, signals, etc. described in this disclosure may be represented using any of a variety of different technologies. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any combination thereof.

[0387] Furthermore, information, signals, etc. may be output from a higher layer to a lower layer and / or from a lower layer to a higher layer. Information, signals, etc. may be input / output via multiple network nodes.

[0388] Input and output information, signals, etc. may be stored in a specific location (for example, memory) or may be managed using a management table. Input and output information, signals, etc. may be overwritten, updated, or added. Output information, signals, etc. may be deleted. Input information, signals, etc. may be transmitted to another device.

[0389] Notification of information is not limited to the aspects / embodiments described in the present disclosure, and may be performed using other methods. For example, notification of information in the present disclosure may be performed by physical layer signaling (e.g., Downlink Control Information (DCI) and Uplink Control Information (UCI)), higher layer signaling (e.g., Radio Resource Control (RRC) signaling, broadcast information (Master Information Block (MIB) and System Information Block (SIB)), Medium Access Control (MAC) signaling), other signals, or a combination thereof.

[0390] Note that the physical layer signaling may be called Layer 1 / Layer 2 (L1 / L2) control information (L1 / L2 control signal), L1 control information (L1 control signal), etc. Furthermore, the RRC signaling may be called an RRC message, such as an RRC connection setup message or an RRC connection reconfiguration message. Furthermore, the MAC signaling may be notified using, for example, a MAC Control Element (CE).

[0391] Furthermore, notification of specified information (e.g., notification that "it is X") is not limited to explicit notification, but may be made implicitly (e.g., by not notifying the specified information or by notifying other information).

[0392] The determination may be made by a value represented by one bit (0 or 1), by a Boolean value represented by true or false, or by a comparison of numerical values ​​(e.g., comparison with a predetermined value).

[0393] Software shall be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures, functions, etc., whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise.

[0394] Software, instructions, information, etc. may also be transmitted or received over a transmission medium. For example, if software is transmitted from a website, server, or other remote source using wired technologies (such as coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL)), and / or wireless technologies (such as infrared, microwave), then these wired and / or wireless technologies are included within the definition of transmission media.

[0395] As used in this disclosure, the terms "system" and "network" may be used interchangeably. A "network" may refer to devices included in the network (e.g., base stations).

[0396] In the present disclosure, terms such as "precoding," "precoder," "weight (precoding weight)," "Quasi-Co-Location (QCL)," "Transmission Configuration Indication state (TCI state)," "spatial relation," "spatial domain filter," "transmit power," "phase rotation," "antenna port," "antenna port group," "layer," "number of layers," "rank," "resource," "resource set," "resource group," "beam," "beam width," "beam angle," "antenna," "antenna element," "panel," etc. may be used interchangeably.

[0397] In this disclosure, terms such as "base station (BS)," "radio base station," "fixed station," "NodeB," "eNB (eNodeB)," "gNB (gNodeB)," "access point," "transmission point (TP)," "reception point (RP)," "transmission / reception point (TRP)," "panel," "cell," "sector," "cell group," "carrier," "component carrier," etc. may be used interchangeably. Base stations may also be referred to by terms such as macrocell, small cell, femtocell, picocell, etc.

[0398] A base station can accommodate one or more (e.g., three) cells. When a base station accommodates multiple cells, the overall coverage area of ​​the base station can be divided into multiple smaller areas, and each smaller area can be provided with communication service by a base station subsystem (e.g., a small indoor base station (Remote Radio Head (RRH))). The term "cell" or "sector" refers to a part or the entire coverage area of ​​a base station and / or base station subsystem that provides communication service within this coverage.

[0399] In this disclosure, the terms "Mobile Station (MS)," "user terminal," "User Equipment (UE)," "terminal," etc. may be used interchangeably.

[0400] A mobile station may also be referred to as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable terminology.

[0401] At least one of the base station and the mobile station may be called a transmitting device, a receiving device, a wireless communication device, etc. Note that at least one of the base station and the mobile station may be a device mounted on a moving object, the moving object itself, etc.

[0402] The mobile body is a movable object that can move at any speed and naturally includes cases where the mobile body is stationary. Examples of the mobile body include, but are not limited to, vehicles, transport vehicles, automobiles, motorcycles, bicycles, connected cars, excavators, bulldozers, wheel loaders, dump trucks, forklifts, trains, buses, handcars, rickshaws, ships and other watercraft, airplanes, rockets, satellites, drones, multicopters, quadcopters, balloons, and objects mounted thereon. The mobile body may also be a mobile body that moves autonomously based on an operation command.

[0403] The mobile object may be a vehicle (e.g., a car, an airplane, etc.), an unmanned mobile object (e.g., a drone, an autonomous vehicle, etc.), or a robot (manned or unmanned). Note that at least one of the base station and the mobile station may also include devices that do not necessarily move during communication operations. For example, at least one of the base station and the mobile station may be an Internet of Things (IoT) device such as a sensor.

[0404] Fig. 19 is a diagram showing an example of a vehicle according to an embodiment. As shown in Fig. 19, a vehicle 40 includes a drive unit 41, a steering unit 42, an accelerator pedal 43, a brake pedal 44, a shift lever 45, left and right front wheels 46, left and right rear wheels 47, axles 48, an electronic control unit 49, various sensors (including a current sensor 50, an RPM sensor 51, an air pressure sensor 52, a vehicle speed sensor 53, an acceleration sensor 54, an accelerator pedal sensor 55, a brake pedal sensor 56, a shift lever sensor 57, and an object detection sensor 58), an information service unit 59, and a communication module 60.

[0405] The drive unit 41 is configured with at least one of an engine, a motor, and a hybrid of an engine and a motor, for example. The steering unit 42 includes at least a steering wheel (also called a handle) and is configured to steer at least one of the front wheels 46 and the rear wheels 47 based on the operation of the steering wheel operated by the user.

[0406] The electronic control unit 49 is composed of a microprocessor 61, memory (ROM, RAM) 62, and a communication port (e.g., an input / output (IO) port) 63. Signals are input to the electronic control unit 49 from various sensors 50-58 provided in the vehicle. The electronic control unit 49 may also be called an Electronic Control Unit (ECU).

[0407] The signals from the various sensors 50-58 include a current signal from a current sensor 50 that senses the current of the motor, a rotation speed signal of the front wheels 46 / rear wheels 47 obtained by a rotation speed sensor 51, an air pressure signal of the front wheels 46 / rear wheels 47 obtained by an air pressure sensor 52, a vehicle speed signal obtained by a vehicle speed sensor 53, an acceleration signal obtained by an acceleration sensor 54, a depression amount signal of the accelerator pedal 43 obtained by an accelerator pedal sensor 55, a depression amount signal of the brake pedal 44 obtained by a brake pedal sensor 56, an operation signal of the shift lever 45 obtained by a shift lever sensor 57, and a detection signal for detecting obstacles, vehicles, pedestrians, etc. obtained by an object detection sensor 58.

[0408] The information service unit 59 is composed of various devices, such as a car navigation system, an audio system, speakers, a display, a television, and a radio, for providing various types of information such as driving information, traffic information, and entertainment information, and one or more ECUs for controlling these devices. The information service unit 59 uses information acquired from external devices via the communication module 60 or the like to provide various types of information / services (e.g., multimedia information / multimedia services) to the occupants of the vehicle 40.

[0409] The driving assistance system unit 64 is configured with various devices that provide functions for preventing accidents and reducing the driver's driving burden, such as millimeter-wave radar, Light Detection and Ranging (LiDAR), cameras, positioning locators (e.g., Global Navigation Satellite System (GNSS)), map information (e.g., High Definition (HD) maps, Autonomous Vehicle (AV) maps), gyro systems (e.g., Inertial Measurement Units (IMUs), Inertial Navigation Systems (INSs)), Artificial Intelligence (AI) chips, and AI processors, as well as one or more ECUs that control these devices. The driving assistance system unit 64 also transmits and receives various information via the communication module 60 to realize driving assistance functions or autonomous driving functions.

[0410] The communication module 60 can communicate with the microprocessor 61 and components of the vehicle 40 via the communication port 63. For example, the communication module 60 transmits and receives data (information) via the communication port 63 to and from the drive unit 41, steering unit 42, accelerator pedal 43, brake pedal 44, shift lever 45, left and right front wheels 46, left and right rear wheels 47, axles 48, the microprocessor 61 and memory (ROM, RAM) 62 in the electronic control unit 49, and the various sensors 50-58, which are provided in the vehicle 40.

[0411] The communication module 60 is a communication device that can be controlled by the microprocessor 61 of the electronic control unit 49 and can communicate with an external device. For example, it transmits and receives various information to and from the external device via wireless communication. The communication module 60 may be located either inside or outside the electronic control unit 49. The external device may be, for example, the above-mentioned base station 10 or user terminal 20. Furthermore, the communication module 60 may be, for example, at least one of the above-mentioned base station 10 and user terminal 20 (or may function as at least one of the base station 10 and user terminal 20).

[0412] The communication module 60 may transmit at least one of the signals from the various sensors 50-58 input to the electronic control unit 49 and information obtained based on the signals to an external device via wireless communication.

[0413] The communication module 60 receives various information (traffic information, traffic signal information, vehicle distance information, etc.) transmitted from external devices and displays it on an information service unit 59 provided in the vehicle. The communication module 60 also stores the various information received from the external devices in a memory 62 that can be used by the microprocessor 61. Based on the information stored in the memory 62, the microprocessor 61 may control the drive unit 41, steering unit 42, accelerator pedal 43, brake pedal 44, shift lever 45, left and right front wheels 46, left and right rear wheels 47, axles 48, various sensors 50-58, and the like provided in the vehicle 40.

[0414] Furthermore, a base station in the present disclosure may be read as a user terminal. For example, the aspects / embodiments of the present disclosure may be applied to a configuration in which communication between a base station and a user terminal is replaced with communication between multiple user terminals (which may be called, for example, Device-to-Device (D2D) or Vehicle-to-Everything (V2X)). In this case, the user terminal 20 may be configured to have the functions of the base station 10 described above. Furthermore, terms such as "uplink" and "downlink" may be read as terms corresponding to terminal-to-terminal communication (for example, "sidelink"). For example, terms such as uplink channel and downlink channel may be read as sidelink channel.

[0415] Similarly, the user terminal in the present disclosure may be read as a base station, in which case the base station 10 may be configured to have the functions of the user terminal 20 described above.

[0416] In the present disclosure, an operation described as being performed by a base station may be performed by its upper node in some cases. It is apparent that in a network including one or more network nodes having a base station, various operations performed for communication with a terminal may be performed by the base station, one or more network nodes other than the base station (such as, but not limited to, a Mobility Management Entity (MME) and a Serving-Gateway (S-GW)), or a combination thereof.

[0417] Each aspect / embodiment described in this disclosure may be used alone, in combination, or switched depending on the implementation. Furthermore, the order of the processing procedures, sequences, flowcharts, etc. of each aspect / embodiment described in this disclosure may be changed unless inconsistent. For example, the methods described in this disclosure present elements of various steps using an example order, and are not limited to the specific order presented.

[0418] Each aspect / embodiment described in the present disclosure may be a technology other than Long Term Evolution (LTE), LTE-Advanced (LTE-A), LTE-Beyond (LTE-B), SUPER 3G, IMT-Advanced, 4th generation mobile communication system (4G), 5th generation mobile communication system (5G), 6th generation mobile communication system (6G), xth generation mobile communication system (xG (x is, for example, an integer or decimal number)), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New radio access (NX), Future generation radio access (FX), Global System for Mobile communications (GSM (registered trademark)), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE The present invention may be applied to systems that use 802.20, Ultra-WideBand (UWB), Bluetooth (registered trademark), or other appropriate wireless communication methods, or to next-generation systems that are expanded, modified, created, or defined based on these. It may also be applied to a combination of multiple systems (e.g., a combination of LTE or LTE-A and 5G).

[0419] As used in this disclosure, the phrase "based on" does not mean "based only on," unless expressly stated otherwise. In other words, the phrase "based on" means both "based only on" and "based at least on."

[0420] As used in this disclosure, any reference to an element using a designation such as "first," "second," etc. does not generally limit the quantity or order of those elements. These designations may be used in this disclosure as a convenient method of distinguishing between two or more elements. Thus, a reference to a first and a second element does not imply that only two elements may be employed or that the first element must in some way precede the second element.

[0421] The term "determining," as used in this disclosure, may encompass a wide variety of actions. For example, "determining" may be considered to be judging, calculating, computing, processing, deriving, investigating, looking up, search, inquiry (e.g., looking up in a table, database, or another data structure), ascertaining, etc.

[0422] Additionally, "determining" may be considered to be "determining" receiving (e.g., receiving information), transmitting (e.g., sending information), input, output, accessing (e.g., accessing data in memory), etc.

[0423] Also, "decision" may be considered to be "deciding" resolving, selecting, choosing, establishing, comparing, etc. In other words, "decision" may be considered to be "deciding" on some action.

[0424] Furthermore, "judgment (decision)" may be interpreted as "assuming," "expecting," "considering," or the like.

[0425] The "maximum transmit power" in this disclosure may mean the maximum value of transmit power, the nominal UE maximum transmit power, or the rated UE maximum transmit power.

[0426] As used in this disclosure, the terms "connected," "coupled," or any variation thereof, refer to any direct or indirect connection or coupling between two or more elements, and may include the presence of one or more intermediate elements between two elements that are "connected" or "coupled" to each other. The coupling or connection between elements may be physical, logical, or a combination thereof. For example, "connected" may be read as "access."

[0427] In this disclosure, when two elements are connected, they may be considered to be "connected" or "coupled" to one another using one or more wires, cables, printed electrical connections, etc., as well as using electromagnetic energy having wavelengths in the radio frequency range, microwave range, light (both visible and invisible) range, etc., as some non-limiting and non-exhaustive examples.

[0428] In the present disclosure, the term "A and B are different" may mean "A and B are different from each other." The term may also mean "A and B are each different from C." Terms such as "separate" and "coupled" may also be interpreted in the same way as "different."

[0429] When used in this disclosure, the terms "include," "including," and variations thereof are intended to be inclusive, similar to the term "comprising." Furthermore, when used in this disclosure, the term "or" is not intended to be an exclusive or.

[0430] In this disclosure, where articles are added by translation, such as a, an, and the in English, the disclosure may include that the nouns following these articles are in the plural form.

[0431] Although the invention according to the present disclosure has been described in detail above, it is clear to those skilled in the art that the invention according to the present disclosure is not limited to the embodiments described in the present disclosure. The invention according to the present disclosure can be implemented in modified and altered forms without departing from the spirit and scope of the invention as defined by the description of the claims. Therefore, the description of the present disclosure is intended to be illustrative and explanatory and does not impose any limiting meaning on the invention according to the present disclosure.

Claims

1. a receiver that receives a list including a plurality of cells, a downlink transmission configuration indication (DL TCI) state list, and an uplink TCI (UL TCI) state list through RRC signaling, receives a Medium Access Control Element (MAC CE) that activates at least one DL TCI state and one UL TCI state in the DL TCI state list and the UL TCI state list, and receives downlink control information (DCI) that indicates one or two of the at least one DL TCI state and the UL TCI state; a control unit that applies the one or two TCI states indicated by the DCI to the plurality of cells; One of the MAC CEs activates at least one of the DL TCI states and at least one of the UL TCI states; the DL TCI status list and the UL TCI status list are specific to each of the plurality of cells; A terminal in which at least one of the DL TCI state and the UL TCI state indicated by the DCI among the DL TCI state list and the UL TCI state list specific to each of the plurality of cells indicates a reference signal common to the plurality of cells.

2. receiving a list including a plurality of cells, a downlink transmission configuration indication (DL TCI) state list, and an uplink TCI (UL TCI) state list via RRC signaling, receiving a Medium Access Control Element (MAC CE) activating at least one DL TCI state and one UL TCI state in the DL TCI state list and the UL TCI state list, and receiving downlink control information (DCI) indicating one or two of the at least one DL TCI state and the UL TCI state; applying the one or two TCI states indicated by the DCI to the plurality of cells; One of the MAC CEs activates at least one of the DL TCI states and at least one of the UL TCI states; the DL TCI status list and the UL TCI status list are specific to each of the plurality of cells; the at least one DL TCI state and the UL TCI state indicated by the DCI among the DL TCI state list and the UL TCI state list specific to each of the plurality of cells indicates a reference signal common to the plurality of cells.

3. a transmitter configured to transmit a list including a plurality of cells, a downlink transmission configuration indication (DL TCI) state list, and an uplink TCI (UL TCI) state list by RRC signaling, to transmit a Medium Access Control Element (MAC CE) activating at least one DL TCI state and one UL TCI state in the DL TCI state list and the UL TCI state list, and to transmit downlink control information (DCI) indicating one or two of the at least one DL TCI state and the UL TCI state; a control unit that determines that the one or two TCI states indicated by the DCI apply to the plurality of cells; One of the MAC CEs activates at least one of the DL TCI states and at least one of the UL TCI states; the DL TCI status list and the UL TCI status list are specific to each of the plurality of cells; A base station, wherein the at least one DL TCI state and UL TCI state indicated by the DCI among the DL TCI state list and the UL TCI state list specific to each of the plurality of cells indicates a reference signal common to the plurality of cells.

4. A system having a terminal and a base station, The terminal a receiver that receives a list including a plurality of cells, a downlink transmission configuration indication (DL TCI) state list, and an uplink TCI (UL TCI) state list through RRC signaling, receives a Medium Access Control Element (MAC CE) that activates at least one DL TCI state and one UL TCI state in the DL TCI state list and the UL TCI state list, and receives downlink control information (DCI) that indicates one or two of the at least one DL TCI state and the UL TCI state; a control unit that applies the one or two TCI states indicated by the DCI to the plurality of cells; One of the MAC CEs activates at least one of the DL TCI states and at least one of the UL TCI states; the DL TCI status list and the UL TCI status list are specific to each of the plurality of cells; the at least one DL TCI state and the UL TCI state indicated by the DCI among the DL TCI state list and the UL TCI state list specific to each of the plurality of cells indicates a reference signal common to the plurality of cells; The base station A system comprising a transmitter that transmits the DCI.

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