Terminal, wireless communication method and system

Abstract

According to the present invention, communication is performed appropriately even if a plurality of DL transmissions / UL transmissions are scheduled by one or more TRPs. A terminal according to an embodiment of the present disclosure comprises: a receiving unit which receives downlink first information indicating a schedule of a plurality of physical shared channel transmissions, and second information indicating a unified transmission configuration indicator (TCI); and a control unit which, if an update timing of a unified TCI state indicated by the second information is set midway through a period in which the plurality of physical shared channel transmissions are to be performed, performs control to apply a predetermined TCI state in common to the plurality of physical shared channel transmissions.

Description

[Technical Field]

[0001] The present disclosure relates to a terminal and a wireless communication method in a next-generation mobile communication system. allusion to law and systems. [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 one or more transmission / reception points (TRPs) (multi-TRPs) will use one or more panels (multi-panels) to schedule DL transmissions (e.g., downlink shared channel (e.g., PDSCH) transmissions) / UL transmissions (e.g., uplink shared channel (e.g., PUSCH) transmissions) to terminals (user terminals, User Equipment (UE)).

[0006] For example, in NR, it is also assumed that multiple signals / channels (e.g., multi-PDSCH) are transmitted / received from one or more transmission / reception points. For example, it is conceivable that the schedule of multi-PDSCH transmission / multi-PUSCH transmission is controlled by using one or more downlink control information (e.g., DCI) / downlink control channels (e.g., PDCCH) from one or more transmission / reception points.

[0007] However, in the current NR specifications, there has been insufficient consideration of how to control transmission (e.g., TCI state / QCL assumptions) when scheduling multiple DL / UL transmissions from one or more TRPs.

[0008] Therefore, the present disclosure provides a terminal and a wireless communication method that can appropriately perform communication even when multiple DL transmissions / UL transmissions are scheduled by one or more TRPs. allusion to law One of the objectives is to provide a system for [Means for solving the problem]

[0009] A terminal according to an aspect of the present disclosure is of schedule do First information and unification Transmission configuration indication (TCI) situation a receiving unit that receives second information indicating the The aforementioned Unified TCI status update timing 、 the plurality of physical shared channels but send difference If it is set in the middle of the period The unified TCI state update timing; the plurality of physical shared channels and a timing at which each physical shared channel is transmitted, and a TCI state to be applied to each physical shared channel is determined separately based on the timing at which each physical shared channel is transmitted. a control unit for controlling the The control unit controls not to receive the first physical shared channel after the unified TCI state update timing. do. [Effects of the Invention]

[0010] According to one aspect of the present disclosure, communication can be performed appropriately even when multiple DL transmissions / UL transmissions are scheduled by one or more TRPs. [Brief explanation of the drawings]

[0011] [Figure 1] 1A and 1B are diagrams illustrating an example of a unified / common TCI framework. [Figure 2] 2A and 2B are diagrams illustrating an example of a joint / separate TCI status indication. [Figure 3] FIG. 3 is a diagram showing an example of the timing until the application of a specified TCI state. [Figure 4] FIG. 4 is a diagram illustrating an example of a case in which the update timing of the TCI state indicated by the DCI is set in the middle of the transmission period of the multi-PDSCH. [Figure 5] FIG. 5 is a diagram illustrating an example of a case in which the update timing of the TCI state activated by the MAC CE is set in the middle of the transmission period of the multi-PDSCH. [Figure 6] FIG. 6 is a diagram illustrating an example of a TCI state applied / set to a multi-shared channel in the first embodiment. [Figure 7] FIG. 7 is a diagram illustrating an example of a TCI state applied / set to a multi-shared channel in the second embodiment. [Figure 8]FIG. 8 is a diagram illustrating another example of the TCI state applied / set to the multi-shared channel in the second embodiment. [Figure 9] FIG. 9 is a diagram illustrating another example of the TCI state applied / set to the multi-shared channel in the second embodiment. [Figure 10] FIG. 10 is a diagram illustrating an example of a schematic configuration of a wireless communication system according to an embodiment. [Figure 11] FIG. 11 is a diagram illustrating an example of the configuration of a base station according to an embodiment. [Figure 12] FIG. 12 is a diagram illustrating an example of the configuration of a user terminal according to an embodiment. [Figure 13] FIG. 13 is a diagram illustrating an example of the hardware configuration of a base station and a user terminal according to an embodiment. [Figure 14] FIG. 14 is a diagram illustrating an example of a vehicle according to an embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0012] (TCI, spatial relations, QCL) In NR, it is being considered to control the reception processing (e.g., at least one of reception, demapping, demodulation, and decoding) and transmission processing (e.g., at least one of transmission, mapping, precoding, modulation, and encoding) in the UE of at least one of a signal and a channel (referred to as signal / channel) based on the transmission configuration indication state (TCI state).

[0013] The TCI state may represent that which is applied to a downlink signal / channel, and the equivalent of the TCI state which is applied to an uplink signal / channel may be expressed as a spatial relation.

[0014] The TCI state is information about the quasi-co-location (QCL) of signals / channels, and may also be called spatial reception parameters, spatial relation information, etc. The TCI state may be configured in the UE for each channel or signal.

[0015] A QCL is an index that indicates the statistical properties of a signal / channel. For example, if a signal / channel has a QCL relationship with another signal / channel, it may mean that it can be assumed that at least one of the Doppler shift, Doppler spread, average delay, delay spread, and spatial parameter (e.g., spatial Rx parameter) is the same between these different signals / channels (i.e., they are QCLs with respect to at least one of these).

[0016] The spatial reception parameters may correspond to a reception beam (e.g., a reception analog beam) of the UE, and the beam may be determined based on a spatial QCL. A QCL (or at least one element of a QCL) in the present disclosure may be replaced with an sQCL (spatial QCL).

[0017] A plurality of types (QCL types) of QCLs may be defined. For example, four QCL types A and B may be provided, each having different parameters (or parameter sets) that can be assumed to be the same. The parameters (which may also be referred to as QCL parameters) are listed below: QCL Type A (QCL-A): Doppler shift, Doppler spread, mean delay and delay spread, QCL Type B (QCL-B): Doppler shift and Doppler spread, QCL Type C (QCL-C): Doppler shift and mean delay, · QCL Type D (QCL-D): Spatial reception parameters.

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

[0019] The UE may determine at least one of a transmit beam (Tx beam) and a receive beam (Rx beam) for a signal / channel based on the TCI condition or QCL assumption of the signal / channel.

[0020] The TCI state may be, for example, information about the QCL between the target channel (in other words, the Reference Signal (RS) for the channel) and another signal (e.g., another RS). The TCI state may be set (indicated) by higher layer signaling, physical layer signaling, or a combination thereof.

[0021] The physical layer signaling may be, for example, Downlink Control Information (DCI).

[0022] The channel for which the TCI state or spatial relationship is set (specified) may be, for example, at least one of a downlink shared channel (Physical Downlink Shared Channel (PDSCH)), a downlink control channel (Physical Downlink Control Channel (PDCCH)), an uplink shared channel (Physical Uplink Shared Channel (PUSCH)), and an uplink control channel (Physical Uplink Control Channel (PUCCH)).

[0023] Furthermore, the RS that has a QCL relationship with the channel may be, for example, at least one of a Synchronization Signal Block (SSB), a Channel State Information Reference Signal (CSI-RS), a Sounding Reference Signal (SRS), a CSI-RS for tracking (also called a Tracking Reference Signal (TRS)), and a QCL detection reference signal (also called a QRS).

[0024] 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.

[0025] 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.

[0026] A QCL Type A RS is always configured for PDCCH and PDSCH, and a QCL Type D RS may be configured additionally. Because it is difficult to estimate Doppler shift, delay, etc. by one-shot reception of a DMRS, a QCL Type A RS is used to improve channel estimation accuracy. A QCL Type D RS is used to determine the receiving beam when receiving a DMRS.

[0027] For example, TRS1-1, 1-2, 1-3, and 1-4 are transmitted, and TRS1-1 is indicated as a QCL type C / D RS according to the TCI status of the PDSCH. By indicating the TCI status, the UE can use information obtained from past periodic reception / measurement results of TRS1-1 for reception / channel estimation of the DMRS for PDSCH. In this case, the QCL source of the PDSCH is TRS1-1, and the QCL target is the DMRS for PDSCH.

[0028] (Default TCI State / Default Spatial Relationship / Default PL-RS) In Rel. 16, a PDSCH may be scheduled in a DCI with a TCI field. The TCI state for the PDSCH is indicated by the TCI field. The TCI field in DCI format 1-1 is 3 bits long, and the TCI field in DCI format 1-2 is a maximum of 3 bits long.

[0029] In RRC connected mode, if the TCI information element in the first DCI (higher layer parameter tci-PresentInDCI) is set to "enabled" for a CORESET that schedules a PDSCH, the UE assumes that the TCI field is present in DCI format 1_1 of the PDCCH transmitted in that CORESET.

[0030] Furthermore, if the TCI information element in the second DCI (higher layer parameter tci-PresentInDCI-1-2) for the CORESET that schedules the PDSCH is configured in the UE, the UE assumes that a TCI field with the DCI field size indicated in the TCI information element in the second DCI is present in DCI format 1_2 of the PDSCH transmitted in that CORESET.

[0031] Also, in Rel. 16, a PDSCH may be scheduled with a DCI that does not have a TCI field. The DCI format of the DCI may be DCI format 1_0 or DCI format 1_1 / 1_2 in the case where the TCI information element in the DCI (the higher layer parameter tci-PresentInDCI or tci-PresentInDCI-1-2) is not configured (enabled). When a PDSCH is scheduled with a DCI that does not have a TCI field, if the time offset between the reception of the DL DCI (the DCI that schedules the PDSCH (the scheduling DCI)) and the corresponding PDSCH (the PDSCH scheduled by the DCI) is equal to or greater than a threshold (timeDurationForQCL), the UE assumes that the TCI state or QCL assumption for the PDSCH is the same as the TCI state or QCL assumption (default TCI state) of the CORESET (e.g., the scheduling DCI).

[0032] In RRC connected mode, when the TCI information elements in DCI (higher layer parameters tci-PresentInDCI and tci-PresentInDCI-1-2) are set to "enabled" and when the TCI information elements in DCI are not set, if the time offset between the reception of a DL DCI (a DCI that schedules a PDSCH) and the corresponding PDSCH (a PDSCH scheduled by that DCI) is less than a threshold (timeDurationForQCL) (applicability condition, first condition), in the case of non-cross-carrier scheduling, the TCI state of the PDSCH (default TCI state) may be the TCI state of the lowest CORESET ID in the latest slot in the active DL BWP of that CC (of the specific UL signal). Otherwise, the TCI state of the PDSCH (default TCI state) may be the TCI state of the lowest TCI state ID of the PDSCH in the active DL BWP of the scheduled CC.

[0033] In Rel.15, separate MAC CEs are required for the activation / deactivation of PUCCH spatial relations and for the activation / deactivation of SRS spatial relations. The PUSCH spatial relations follow the SRS spatial relations.

[0034] In Rel. 16, at least one of the MAC CE for PUCCH spatial-related activation / deactivation and the MAC CE for SRS spatial-related activation / deactivation may not be used.

[0035] If neither the spatial relationship nor the PL-RS for the PUCCH is configured in FR2 (applicable condition, second condition), the default assumptions of the spatial relationship and the PL-RS for the PUCCH (default spatial relationship and default PL-RS) are applied. If neither the spatial relationship nor the PL-RS for the SRS (SRS resource for the SRS or SRS resource corresponding to the SRI in DCI format 0_1 ​​that schedules the PUSCH) is configured in FR2 (applicable condition, second condition), the default assumptions of the spatial relationship and the PL-RS for the PUSCH and SRS scheduled by DCI format 0_1 ​​(default spatial relationship and default PL-RS) are applied.

[0036] If a CORESET is configured in an active DL BWP on the CC (conditions apply), the default spatial relationship and default PL-RS may be the TCI state or QCL assumption of the CORESET with the lowest CORESET ID in the active DL BWP. If a CORESET is not configured in an active DL BWP on the CC, the default spatial relationship and default PL-RS may be the active TCI state with the lowest PDSCH ID in the active DL BWP.

[0037] In Rel.15, the spatial relationship of PUSCH scheduled by DCI format 0_0 follows the spatial relationship of the PUCCH resource with the lowest PUCCH resource ID among the active spatial relationships of PUCCH on the same CC. The network needs to update the PUCCH spatial relationships on all SCells even if no PUCCH is transmitted on the SCell.

[0038] In Rel.16, PUCCH configuration is not required for a PUSCH scheduled by DCI format 0_0. If there is no active PUCCH spatial relationship or no PUCCH resource on the active UL BWP in the CC for a PUSCH scheduled by DCI format 0_0 (applicable condition, second condition), the default spatial relationship and default PL-RS are applied to the PUSCH.

[0039] The application conditions for the default spatial relationship / default PL-RS for SRS may include setting a default beam path loss enable information element for SRS (upper layer parameter enableDefaultBeamPlForSRS) to valid. The application conditions for the default spatial relationship / default PL-RS for PUCCH may include setting a default beam path loss enable information element for PUCCH (upper layer parameter enableDefaultBeamPlForPUCCH) to valid. The application conditions for the default spatial relationship / default PL-RS for PUSCH scheduled by DCI format 0_0 may include setting a default beam path loss enable information element for PUSCH scheduled by DCI format 0_0 (upper layer parameter enableDefaultBeamPlForPUSCH0_0) to valid.

[0040] In Rel. 16, if an RRC parameter (a parameter for enabling the default beam PL for PUCCH (enableDefaultBeamPL-ForPUCCH), a parameter for enabling the default beam PL for PUSCH (enableDefaultBeamPL-ForPUSCH0_0), or a parameter for enabling the default beam PL for SRS (enableDefaultBeamPL-ForSRS)) is configured for a UE and a spatial relationship or PL-RS is not configured, the UE applies the default spatial relationship / PL-RS.

[0041] This threshold may also be called time duration for QCL, "timeDurationForQCL", "Threshold", "Threshold for offset between a DCI indicating a TCI state and a PDSCH scheduled by the DCI", "Threshold-Sched-Offset", "beamSwitchTiming", schedule offset threshold, scheduling offset threshold, etc. This threshold may be reported by the UE as UE capability (per subcarrier spacing).

[0042] If the offset (scheduling offset) between the reception of a DL DCI and the corresponding PDSCH is less than the threshold timeDurationForQCL, and at least one TCI state configured for the serving cell of the scheduled PDSCH includes "QCL Type D," and the UE is configured with the two default TCI enable information element (enableTwoDefaultTCIStates-r16), and at least one TCI codepoint (the codepoint in the TCI field in the DL DCI) indicates two TCI states, the UE assumes that the PDSCH or DM RS port of the PDSCH transmission occasion of the serving cell is quasi-colocated with the RS for the QCL parameters associated with the two TCI states corresponding to the lowest codepoints among the TCI codepoints containing two different TCI states (two default QCL assumption decision rule). The two default TCI enable information element indicates that Rel. 16 operation of the two default TCI states for the PDSCH is enabled when at least one TCI codepoint maps to two TCI states.

[0043] As the default TCI state of PDSCH in Rel.15 / 16, the default TCI state for a single TRP, the default TCI state for multiple TRPs based on multiple DCIs, and the default TCI state for multiple TRPs based on a single DCI are specified.

[0044] As default TCI states for aperiodic CSI-RS (A(aperiodic)-CSI-RS) in Rel.15 / 16, the default TCI state for a single TRP, the default TCI state for multi-TRP based on multi-DCI, and the default TCI state for multi-TRP based on a single DCI are specified.

[0045] In Rel.15 / 16, the default spatial relationship and default PL-RS for each of PUSCH / PUCCH / SRS are specified.

[0046] (Multi-TRP) In NR, one or more Transmission / Reception Points (TRPs) (multi-TRPs (MTRPs)) are considered to perform DL transmission to a UE using one or more panels (multi-panels). Also, it is considered that a UE performs UL transmission to one or more TRPs using one or more panels.

[0047] Note that multiple TRPs may correspond to the same cell identifier (ID), or different cell IDs. The cell ID may be a physical cell ID or a virtual cell ID.

[0048] Multi-TRPs (e.g., TRPs #1 and #2) may be connected by ideal / non-ideal backhauls to exchange information, data, etc. Each TRP of the multi-TRP may transmit a different code word (CW) and a different layer. Non-Coherent Joint Transmission (NCJT) may be used as a form of multi-TRP transmission.

[0049] In the NCJT, for example, TRP#1 performs modulation mapping and layer mapping on a first codeword to transmit a first PDSCH using a first number of layers (e.g., two layers) with a first precoding, and TRP#2 performs modulation mapping and layer mapping on a second codeword to transmit a second number of layers (e.g., two layers) with a second precoding.

[0050] Note that multiple PDSCHs (multi-PDSCHs) that are non-coherent may be defined as partially or completely overlapping in at least one of the time and frequency domains, i.e., a first PDSCH from a first TRP and a second PDSCH from a second TRP may overlap in at least one of the time and frequency resources.

[0051] The first PDSCH and the second PDSCH may be assumed to be not quasi-co-located (Quasi-Co-Location (QCL)). Reception of multiple PDSCHs may be interpreted as simultaneous reception of PDSCHs that are not of a certain QCL type (e.g., QCL type D).

[0052] Multiple PDSCHs from multiple TRPs (which may also be referred to as multiple PDSCHs) may be scheduled using one DCI (single DCI, single PDCCH) (single-master mode, single-DCI based multi-TRP). Multiple PDSCHs from multiple TRPs may also be scheduled using multiple DCIs (multiple DCI, multiple PDCCHs) (multi-master mode, multi-DCI based multi-TRP).

[0053] In URLLC for multiple TRPs, it is considered that PDSCH (transport block (TB) or codeword (CW)) repetition across multiple TRPs is supported. Repetition schemes (URLLC schemes, e.g., schemes 1, 2a, 2b, 3, and 4) across multiple TRPs in the frequency domain, layer (spatial) domain, or time domain are supported. In scheme 1, multiple PDSCHs from multiple TRPs are space division multiplexed (SDM). In schemes 2a and 2b, PDSCHs from multiple TRPs are frequency division multiplexed (FDM). In scheme 2a, the redundancy version (RV) is the same for multiple TRPs. In scheme 2b, the RVs may be the same or different for multiple TRPs. In schemes 3 and 4, multiple PDSCHs from multiple TRPs are time division multiplexed (TDM). In scheme 3, multiple PDSCHs from multiple TRPs are transmitted in one slot. In scheme 4, multiple PDSCHs from multiple TRPs are transmitted in different slots.

[0054] Such a multi-TRP scenario allows for more flexible transmission control using good quality channels.

[0055] To support intra-cell (having the same cell ID) and inter-cell (having different cell IDs) multi-TRP transmission based on multiple PDCCHs, in the RRC configuration information for linking multiple pairs of PDCCHs and PDSCHs with multiple TRPs, one control resource set (CORESET) in the PDCCH configuration information (PDCCH-Config) may correspond to one TRP.

[0056] If at least one of the following conditions 1 and 2 is satisfied, the UE may determine that the transmission is a multi-TRP transmission based on the multi-DCI transmission. In this case, the TRP may be replaced with a CORESET pool index. [Condition 1] A CORESET pool index of 1 is set. [Condition 2] Two different values ​​of the CORESET pool index (for example, 0 and 1) are set.

[0057] If the following condition is met, the UE may determine that the state is multi-TRP based on a single DCI, in which case the two TRPs may be interpreted as two TCI states indicated by the MAC CE / DCI. [conditions] "Enhanced TCI States Activation / Deactivation for UE-specific PDSCH MAC CE" is used to indicate one or two TCI states for one codepoint of the TCI field in the DCI.

[0058] The DCI for common beam instruction may be a UE-specific DCI format (e.g., DL DCI format (e.g., 1_1, 1_2), UL DCI format (e.g., 0_1, 0_2)), or may be a UE-group common DCI format.

[0059] (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.

[0060] 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.

[0061] 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).

[0062] 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).

[0063] 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.

[0064] 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.

[0065] 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.

[0066] 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.

[0067] 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).

[0068] 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).

[0069] 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).

[0070] 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).

[0071] 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.

[0072] Support for N=M=1 is being considered for Rel. 17. Support for other cases is being considered for Rel. 18 and later.

[0073] In the example of FIG. 1A, 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 (e.g., a unified TCI state) may apply to at least one (or all) of the UL / DL channels / RS. One DCI may indicate both the UL TCI and the DL TCI.

[0074] 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.

[0075] 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).

[0076] 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."

[0077] In the example of Figure 1B, the RRC parameters configure multiple TCI states (joint common TCI pools) for both DL and UL. The MAC CE may activate multiple TCI states (active TCI pools) from the configured multiple TCI states. Separate active TCI pools for UL and DL may be configured / activated.

[0078] 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.

[0079] The existing DCI formats 1_1 / 1_2 may be used to indicate the common TCI status.

[0080] The DCI format indicating the TCI state may be a specific DCI format, for example, DCI format 1_1 / 1_2 (defined in Rel. 15 / 16 / 17).

[0081] The DCI format (DCI format 1_1 / 1_2) indicating the TCI state may be a DCI format without a DL assignment. In the present disclosure, these may be interchangeably read as a DCI format without a DL assignment, a DCI format (DCI format 1_1 / 1_2) that does not schedule a PDSCH, a DCI format (DCI format 1_1 / 1_2) that does not include one or more specific fields, a DCI format (DCI format 1_1 / 1_2) in which one or more specific fields are set to fixed values, etc.

[0082] For a DCI format without DL assignment (a DCI format that does not include one or more specific fields), the specific fields may be fields other than the TCI field, the DCI format identifier field, the carrier indicator field, the bandwidth fraction (BWP) indicator field, the Time Domain Resource Assignment (TDRA) field, the Downlink Assignment Index (DAI) field (if configured), the Transmission Power Control (TPC) command field (for the scheduled PUCCH), the PUCCH resource indicator field, and the PDSCH-to-HARQ feedback timing indicator field (if present). The specific fields may be set as reserved fields or ignored.

[0083] For DCI formats without DL assignment (DCI formats in which one or more specific fields are set to fixed values), the specific fields may be a Redundancy Version (RV) field, a Modulation and Coding Scheme (MCS) field, a New Data Indicator field, and a Frequency Domain Resource Assignment (FDRA) field.

[0084] The RV field may be set to all ones. The MCS field may be set to all ones. The NDI field may be set to zero. The FDRA field of type 0 may be set to all zeros. The FDRA field of type 1 may be set to all ones. The FDRA field for a dynamic switch (upper layer parameter dynamicSwitch) may be set to all zeros.

[0085] The common TCI framework may have separate TCI states for DL ​​and UL.

[0086] (TCI status indication method) In Rel. 17 and later, it is being considered that one or more TCI states (common TCI states) will be indicated to a UE using a TCI state field (TCI field, maximum 3 bits) included in a DCI format (e.g., DCI format 1_1 / 1_2 without / with DL assignment).

[0087] 2A is a diagram illustrating an example of a joint TCI state indication. As illustrated in FIG. 2A, in the joint TCI state indication, one joint TCI state (DL / UL joint TCI state) may correspond to one code point of a TCI field. The UE may determine the TCI states (DL / UL joint TCI states) to apply to the DL channel / signal and the UL channel / signal based on the indicated code points of the TCI field.

[0088] FIG. 2B is a diagram illustrating an example of a separate TCI state indication. As illustrated in FIG. 2B, in the separate TCI state indication, one or two TCI states correspond to a code point in one TCI field. The two TCI states may be a DL (separate) TCI state and a UL (separate) TCI state, respectively. The UE determines the TCI state to apply to the DL channel / signal and the TCI state to apply to the UL channel / signal based on the indicated code point in the TCI field. When the UE is notified of a code point in the TCI field corresponding to only one TCI state (e.g., code point "000" in FIG. 2B), the UE may continue / indicate the UL TCI state that is applied until the indication for the non-indicated TCI state (e.g., the UL TCI state in the case of code point "000" in FIG. 2B).

[0089] (beam application time(BAT)) In Rel. 17 and later, a timeline from the instruction of a TCI state (which may be called a "beam instruction") to the application of the instructed TCI state has been considered. The timing from the reception of a beam instruction to the application of a TCI state (which may be called beam application timing (BAT)) may be the timing from the transmission of a HARQ-ACK for a PDSCH scheduled by a DCI instructing the TCI state until a specific time (e.g., K symbols) has elapsed (see FIG. 3). The timing may be at least the first slot after the specific time (e.g., K symbols). In the present disclosure, BAT, K symbols, Y symbols, and X [ms] may be interchangeable.

[0090] The K may be determined based on higher layer signaling (RRC parameters) based on capability information (UE Capability Information, for example, "timeDurationForQCL-rel18") reported by the UE. Note that the BAT for a specific subcarrier spacing may be set for multiple (e.g., all) CCs / BWPs to which a common TCI state ID of a common TCI state in carrier aggregation (CA) is set.

[0091] Incidentally, in Rel. 17 and later, it is expected that a unified / common TCI framework will be supported for multi-PDSCH / multi-PUSCH in a predetermined frequency range (e.g., B52.6 (FR2-2)). In this case, how to set the QCL / TCI state (e.g., default QCL / TCI state) of multi-PDSCH / PUSCH becomes an issue.

[0092] For example, there may be cases where the indicated TCI state is updated during the transmission of multi-PDSCH / multi-PUSCH, or where timing to update the TCI state occurs during the transmission of multi-PDSCH / multi-PUSCH (see FIGS. 4 and 5). In such cases, the problem arises as to how to control the beam applied to each PDSCH / each PUSCH (for example, at least one of the DL / UL TCI state, the UL TCI state, and the DL TCI state).

[0093] 4 shows an example in which multiple TCI states are activated by a MAC CE and a unified TCI state (e.g., unified TCI state) is indicated by a DCI. The DCI indicating the unified TCI state may be called a beam indication DCI, and may or may not include a DL assignment (e.g., DL assignment) / UL assignment (e.g., UL grant).

[0094] Here, the case is shown in which TCI state #2 is indicated as a common beam by DCI used for scheduling the PDSCH, and multi-PDSCH (here, PDSCHs #1 to #4) are scheduled before and after the timing of updating / updating the TCI state #2. In such a case, the problem is how to control the TCI states of multi-PDSCHs #1 to #4.

[0095] FIG. 5 shows an example where one TCI state is activated by the MAC CE (eg, the TCI state activated at the MAC CE corresponds to the indicated TCI state).

[0096] Here, a case is shown in which TCI state #2 is activated as a common beam by the MAC CE included in the PDSCH scheduled by DCI, and multi-PDSCHs (here, PDSCHs #1 to #4) are scheduled before and after the timing of updating / updating the TCI state #2. In such a case, the problem is how to control the TCI states of multi-PDSCHs #1 to #4.

[0097] Therefore, the present inventors have focused on cases where the application of a unified TCI state to multi-PDSCH transmission / multi-PUSCH transmission is supported and the timing of updating the TCI state occurs during multi-PDSCH / PUSCH transmission, and have considered how to set / apply / determine the QCL assumption / TCI state in such cases, thereby conceiving one aspect of the present embodiment.

[0098] 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.

[0099] In the present disclosure, "A / B / C" and "at least one of A, B, and C" may be read as interchangeable. In the present disclosure, cell, serving cell, CC, carrier, BWP, DL BWP, UL BWP, active DL BWP, active UL BWP, and band may be read as interchangeable. In the present disclosure, index, ID, indicator, and resource ID may be read as interchangeable. In the present disclosure, sequence, list, set, group, group, cluster, subset, etc. may be read as interchangeable. In the present disclosure, support, control, controllable, operate, and operable may be read as interchangeable.

[0100] In the present disclosure, the terms configure, activate, update, indicate, enable, specify, and select may be read interchangeably.

[0101] In the present disclosure, the higher layer signaling may be, for example, any one of Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information, etc., or a combination thereof. In the present disclosure, RRC, RRC signaling, RRC parameters, higher layer, higher layer parameters, RRC information elements (IEs), RRC messages, and settings may be read interchangeably.

[0102] The MAC signaling may use, for example, a MAC Control Element (MAC CE), a MAC Protocol Data Unit (PDU), etc. In the present disclosure, the MAC CE, an update command, and an activation / deactivation command may be read interchangeably.

[0103] The broadcast information may be, for example, a Master Information Block (MIB), a System Information Block (SIB), Remaining Minimum System Information (RMSI, SIB1), Other System Information (OSI), etc.

[0104] In this disclosure, the terms beam, spatial-domain filter, spatial setting, TCI state, UL TCI state, unified TCI state, unified beam, common TCI state, common beam, TCI assumption, QCL assumption, QCL parameter, spatial-domain receive filter, UE spatial-domain receive filter, UE receive beam, DL beam, DL receive beam, DL precoding, DL precoder, DL-RS, RS for QCL type D in TCI state / QCL assumption, RS for QCL type A in TCI state / QCL assumption, spatial relationship, spatial-domain transmit filter, UE spatial-domain transmit filter, UE transmit beam, UL beam, UL transmit beam, UL precoding, UL precoder, and PL-RS may be interchangeable. In this disclosure, the terms QCL type X-RS, DL-RS associated with QCL type X, DL-RS with QCL type X, source of DL-RS, SSB, CSI-RS, and SRS may be interchangeable.

[0105] In the present 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 (CONTROLLER RESOLUTION SET (CORESET)), physical downlink shared channel (PDSCH), codeword (CW), transport block (TB), reference signal (Reference Signal (RS)), base station, antenna port of a certain signal (e.g., demodulation reference signal (DMRS) port), DMRS, antenna port group of a certain signal (e.g., DMRS port group), group for multiplexing (e.g., Code Division Multiplexing (CDM) group, reference signal group, CORESET group), Physical Uplink Control The terms PUCCH group, PUCCH resource group, resource (e.g., reference signal resource, SRS resource), resource set (e.g., reference signal resource set), CORESET pool, CORESET subset, 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, redundancy version (RV), and layer (multi-input multi-output (MIMO) layer, transmission layer, spatial layer) may be read as interchangeable.In addition, a panel identifier (ID) and a panel may be interchangeable. In the present disclosure, a TRP ID and a TRP may be interchangeable.

[0106] The panel may be associated with at least one of a group index of an SSB / CSI-RS group, a group index of a group-based beam report, and a group index of an SSB / CSI-RS group for group-based beam reporting.

[0107] Furthermore, a panel identifier (ID) and a panel may be interchangeable. That is, a TRP ID and a TRP, a CORESET group ID and a CORESET group, etc. may be interchangeable.

[0108] In the present disclosure, the terms TRP, transmission point, panel, DMRS port group, CORESET pool, and one of two TCI states associated with one code point in a TCI field may be read interchangeably.

[0109] In this disclosure, a single PDCCH (DCI) may be assumed to be supported when multiple TRPs utilize an ideal backhaul. Multiple PDCCHs (DCIs) may be assumed to be supported when multiple TRPs utilize a non-ideal backhaul.

[0110] The ideal backhaul may be called DMRS port group type 1, reference signal associated group type 1, antenna port group type 1, CORESET pool type 1, etc. The non-ideal backhaul may be called DMRS port group type 2, reference signal associated group type 2, antenna port group type 2, CORESET pool type 2, etc. The names are not limited to these.

[0111] In this disclosure, the terms "single TRP," "single TRP system," "single TRP transmission," and "single PDSCH" may be interchangeable. In this disclosure, the terms "multiple TRPs," "multiple TRP system," "multiple TRP transmission," and "multiple PDSCH" may be interchangeable. In this disclosure, the terms "single DCI," "single PDCCH," "multiple TRPs based on a single DCI," and "activating two TCI states on at least one TCI codepoint" may be interchangeable.

[0112] In the present disclosure, single TRP, channel using single TRP, channel using one TCI state / spatial relationship, no multi-TRP enabled by RRC / DCI, no multiple TCI states / spatial relationships enabled by RRC / DCI, no CORESETPoolIndex value of 1 set for any CORESET, and no codepoint in the TCI field mapped to two TCI states may be read interchangeably.

[0113] In the present disclosure, "multi-TRP," "channel using multi-TRP," "channel using multiple TCI states / spatial relationships," "multi-TRP being enabled by RRC / DCI," "multiple TCI states / spatial relationships being enabled by RRC / DCI," and "at least one of multi-TRP based on a single DCI" and "multi-TRP based on multiple DCI" may be interchangeable. In the present disclosure, "multi-TRP based on multiple DCI," and "setting a CORESET pool index (CORESETPoolIndex) value of 1 for the CORESET" may be interchangeable. In the present disclosure, "multi-TRP based on a single DCI," and "at least one code point in the TCI field is mapped to two TCI states" may be interchangeable.

[0114] In the present disclosure, TRP#1 (first TRP) may correspond to CORESET pool index = 0 or may correspond to the first of two TCI states corresponding to one code point in the TCI field. TRP#2 (second TRP) TRP#1 (first TRP) may correspond to CORESET pool index = 1 or may correspond to the second of two TCI states corresponding to one code point in the TCI field.

[0115] In the present disclosure, single DCI (sDCI), single PDCCH, multi-TRP system based on single DCI, sDCI-based MTRP, and activation of two TCI states on at least one TCI codepoint may be read interchangeably.

[0116] In the present disclosure, multi-DCI (mDCI), multi-PDCCH, multi-TRP system based on multi-DCI, mDCI-based MTRP, and setting two CORESET pool indices or CORESET pool index=1 (or a value greater than or equal to 1) may be read interchangeably.

[0117] The QCL of the present disclosure may be interchangeably read as QCL Type D.

[0118] In the present disclosure, expressions such as "TCI state A is QCL type D, which is the same as TCI state B," "TCI state A is the same as TCI state B," and "TCI state A is QCL type D with TCI state B" may be read interchangeably.

[0119] In the present disclosure, the single DCI-based multi-TRP repetition may be an NCJT for an enhanced mobile broadband (eMBB) service (low priority, priority 0) or a repetition of a URLLC service (high priority, priority 1) for an ultra-reliable and low latency communications service.

[0120] In each embodiment of the present disclosure, a PDSCH for multiple TRPs based on a single DCI may be interchangeably read as a PDSCH to which TDM / FDM / SDM for multiple TRPs (defined in Rel. 16) is applied.

[0121] In each embodiment of the present disclosure, a PDSCH for multiple TRPs may be interchangeably read as a PDSCH to which TDM / FDM / SDM for multiple TRPs based on a single DCI (defined in Rel. 16) is applied.

[0122] In each embodiment of the present disclosure, PUSCH / PUCCH / PDCCH for multiple TRPs based on a single DCI may be interchangeably read as repeated transmission (repetition) of PUSCH / PUCCH / PDCCH for multiple TRPs (defined in Rel. 17 and later).

[0123] In each embodiment of the present disclosure, configuring the use of multiple TRPs based on multiple DCIs may mean configuring a CORESET pool index of 1. Also, configuring the use of multiple TRPs based on multiple DCIs may mean configuring a CORESET pool index of two different values ​​(e.g., 0 and 1).

[0124] In each embodiment of the present disclosure, UL transmission using multiple panels may refer to a UL transmission scheme using multiple panels of a UE with DCI enhancement.

[0125] In each embodiment of the present disclosure, if a joint TCI state / separate TCI state in the unified TCI state framework is not applicable to each channel / signal, the aforementioned default TCI state / QCL / spatial relationship may be used to determine the TCI state / QCL / spatial relationship of each channel.

[0126] The following embodiments of the present disclosure may be applied to transmission and reception of any channel / signal to which the unified TCI state framework defined in the above-mentioned Rel. 17 and later is applicable.

[0127] In the present disclosure, applying a TCI state to each channel / signal / resource may mean applying a TCI state to transmission and reception of each channel / signal / resource.

[0128] In the present disclosure, small, few, short, and low may be read as interchangeable. Also, in the present disclosure, ignore, drop, etc. may be read as interchangeable.

[0129] In the present disclosure, "highest (maximum)" and "lowest (minimum)" may be interpreted interchangeably. Also, in the present disclosure, "maximum" may be interpreted interchangeably as "nth (n is any natural number)" largest, larger, higher, etc. Also, in the present disclosure, "minimum" may be interpreted interchangeably as "nth (n is any natural number) smallest," smaller, lower, etc.

[0130] In the present disclosure, repetition, repeated transmission, and repeated reception may be read interchangeably.

[0131] In the present disclosure, the terms channel, signal, and channel / signal may be interchangeable. In the present disclosure, the terms DL channel, DL signal, DL signal / channel, transmission / reception of DL signal / channel, DL reception, and DL transmission may be interchangeable. In the present disclosure, the terms UL channel, UL signal, UL signal / channel, transmission / reception of UL signal / channel, UL reception, and UL transmission may be interchangeable.

[0132] In the present disclosure, a first TRP may correspond to a first TCI state. In the present disclosure, a second TRP may correspond to a second TCI state. In the present disclosure, an nth TRP may correspond to an nth TCI state.

[0133] In the present disclosure, a first CORESET pool index value (e.g., 0), a first TRP index value (e.g., 1), and a first TCI state (first DL / UL (joint / separate) TCI state) may correspond to each other. In the present disclosure, a second CORESET pool index value (e.g., 1), a second TRP index value (e.g., 2), and a second TCI state (second DL / UL (joint / separate) TCI state) may correspond to each other.

[0134] (Wireless communication method) In the following description, a case where the TCI state is updated by DCI / MAC CE or the like will be described as an example, but the present embodiment is not limited to this. For example, the contents of the following embodiment may also be applied to a TCI state list (or TCI state pool) set by higher layer parameters or the like, and an active TCI state (or active TCI state list) activated by a MAC CE, when they are updated during a multi-physical shared channel transmission.

[0135] In addition, the following description will be given using an example of repeated transmission of a physical shared channel (e.g., PDSCH / PUSCH) (or multi-PDSCH / multi-PUSCH), but the present invention may also be applied to repeated transmission of other channels / reference signals (e.g., multi-PDCCH, multi-PUCCH, etc.).

[0136] In the following description, the unified TCI state is used as an example of the TCI state instructed to the UE from the network (e.g., a base station), but this is not limiting. This embodiment may be applied to a TCI state other than the unified TCI state (e.g., a TCI state supported in Rel. 15 / 16), a spatial relationship, or an SRI instruction.

[0137] In the following description, the TCI state indicated to the UE from the network (e.g., base station) may be indicated / activated / set by DCI / MAC CE / RRC. The DCI indicating the TCI state may be a DCI for scheduling multi-PDSCH / multi-PUSCH or another DCI.

[0138] First Embodiment The first embodiment describes a case where a predetermined TCI state is commonly applied / set to multiple physical shared channels (hereinafter also referred to as shared channels) when the TCI state update timing is set in the middle of a period in which the multiple physical shared channels are transmitted.

[0139] The multiple shared channels may be at least one of multi-PDSCH transmission and multi-PUSCH transmission. Multi-PDSCH transmission / multi-PUSCH transmission may be scheduled / activated by a single DCI, or may be scheduled / activated by multiple DCIs. Information regarding the TCI state to be updated may be notified by DCI / MAC CE / RRC. The TCI state may be a unified TCI state. The unified TCI state may be interpreted as a joint TCI state / separate TCI state.

[0140] 6 shows a case where multiple shared channels (here, multi-PDSCHs #1 to #4) are scheduled by the same DCI, and the timing to update the unified TCI state is set midway through the period in which the multi-PDSCHs #1 to #4 are transmitted (here, between the transmission start timing of PDSCH #2 and the transmission start timing of PDSCH #3). Here, the case in which a PDSCH is scheduled is shown, but the PDSCH may be replaced with a PUSCH.

[0141] The UE receives first information (e.g., DCI) that schedules the multi-PDSCH and second information (e.g., DCI / MAC CE) that indicates the TCI state. If the indicated TCI state update timing is set in the middle of the multi-PDSCH transmission period, the UE may apply a predetermined TCI state to the multi-PDSCHs #1 to #4 in common.

[0142] FIG. 6 shows a case where the predetermined TCI state applied to each of PDSCHs #1 to #4 is the TCI state applied to the first PDSCH (here, PDSCH #1) of the multi-PDSCHs (or the indicated TCI state corresponding to the first PDSCH #1). That is, even in the period after the timing of updating the TCI state, the UE assumes / applies the TCI state before the update timing (e.g., the old unified TCI state) to the multi-PDSCHs (e.g., PDSCHs #3 and #4). In the present disclosure, the old unified TCI state (or the old TCI state) may be the TCI state indicated / activated by the DCI / MAC CE before the update timing, or may be a TCI state determined according to a predetermined rule (e.g., the default TCI state).

[0143] On the other hand, the UE may assume / apply the updated TCI state to other channels / reference signals in the period after the timing of updating the TCI state.

[0144] The predetermined TCI state commonly applied to each of the multi-shared channels is not limited to the first shared channel among the multi-shared channels, but may be another shared channel. For example, the predetermined TCI state may be the TCI state applied to the last shared channel / predetermined-th shared channel (or an indicated TCI state corresponding to the last shared channel / predetermined-th shared channel). Alternatively, the predetermined TCI state may be the TCI state applied to the shared channel of the first / last / predetermined-th symbol or the first / last / predetermined-th slot. The predetermined TCI state may be defined in a specification or may be set to the UE by the base station using higher layer parameters.

[0145] In this way, it is possible to simplify UE operation by assuming / applying / setting the same TCI state for multi-PDSCH / multi-PUSCH transmission regardless of the timing of updating the TCI state.

[0146] When the first embodiment is applied, the timing of updating the beams (or TCI states) of the multi-PDSCH / multi-PUSCH and the timing of updating the beams of other channels / reference signals may be applied separately (for example, a difference may occur in the beam update timing). In Fig. 6, the TCI state before the beam update timing (for example, the old unified TCI state) may be applied to PDSCH#3 / #4, and the TCI state after the update (for example, the new unified TCI state) may be applied to the other channels / reference signals.

[0147] In this case, if different unified TCI states are assumed / applied / configured for the multi-shared channel (e.g., PDSCH#3 / #4 in FIG. 6) and other channels / reference signals in the same time domain (e.g., the same symbol), the UE may prioritize one of the TCI states when performing transmission / reception processing.

[0148] For example, the UE may control the UE to transmit / receive only high-priority channels / reference signals and not transmit / receive (e.g., drop) other low-priority channels / reference signals. Alternatively, the UE may control the UE to transmit / receive both high-priority channels / reference signals and low-priority channels / reference signals based on the TCI state corresponding to the high-priority channel / reference signal.

[0149] The priority corresponding to the channel / reference signal may be determined based on a predetermined rule or may be configured in the UE by the base station using higher layer parameters. The predetermined rule may be at least one of the type of channel, the start or end timing of the channel / reference signal, the start or end timing of triggering / scheduling the channel / reference signal, and the frequency domain to which each channel / reference signal is assigned.

[0150] For example, the priority may be determined based on whether the channel / reference signal is a multi-PDSCH / PUSCH or another channel / reference signal (e.g., other channels / reference signals are given priority). Alternatively, the priority may be determined based on the index of the start symbol / end symbol of the channel / reference signal (e.g., an earlier start symbol is given priority). Alternatively, the priority may be determined based on the start / end symbol index of the DCI that triggers / schedules the channel / RS (e.g., a later DCI end symbol is given priority). Alternatively, the priority may be determined based on the frequency index (PRB / CC) to which the channel / RS is assigned (e.g., a smaller CC index is given priority).

[0151] In this way, when the multi-PDSCH / PUSCH and other channels / reference signals corresponding to different TCI states overlap in the same time domain, one of the transmission / reception may be prioritized. This allows UEs that do not have the UE capability for simultaneous reception of different beams (or have not reported the UE capability) to properly perform communication processing even though they do not support reception of channels / reference signals of different beams (e.g., QCL Type D) in the same symbol.

[0152] 6, the same TCI state (or one TCI state) may be indicated for the multi-PDSCH (here, PDSCHs #1 to #4), or different TCI states (for example, two TCI states) may be indicated. Different TCI states may correspond to different CORESET pool indices or may correspond to the same CORESET pool index.

[0153] When different TCI states (e.g., a first TCI state and a second TCI state) are indicated, the first TCI state may correspond to some PDSCHs (e.g., PDSCH#1 / #3 (e.g., cyclic mapping), or PDSCH#1, #2 (e.g., sequential mapping)), and the second TCI state may correspond to other PDSCHs (e.g., PDSCH#2 / #4, or PDSCH#3, #4).

[0154] The timing of the update to the first TCI state and the timing of the update to the second TCI state may be the same, or the timing of the update to the first TCI state and the timing of the update to the second TCI state may be set differently.

[0155] A common TCI state (e.g., the old first TCI state) may be applied to some PDSCHs before and after the timing of updating to the first TCI state (or regardless of the timing of updating), and a common TCI state (e.g., the old second TCI state) may be applied to other PDSCHs before and after the timing of updating to the second TCI state (or regardless of the timing of updating).

[0156] <Second embodiment> The second embodiment describes a case where the TCI state update timing is set in the middle of a period in which multiple shared channels are transmitted, and the TCI state of each shared channel is applied / set separately based on the TCI state update timing / transmission timing of each shared channel.

[0157] The multiple shared channels may be at least one of multiple PDSCH transmissions and multiple PUSCH transmissions. The multiple PDSCH transmissions / multiple PUSCH transmissions may be scheduled / activated by a single DCI or may be scheduled / activated by multiple DCIs. Information about the TCI state to be updated may be signaled by DCI / MAC CE / RRC. The TCI state may be a unified TCI state.

[0158] 7 shows a case where multiple shared channels (here, multi-PDSCHs #1 to #4) are scheduled by the same DCI, and the timing to update the unified TCI state is set midway through the period in which the multi-PDSCHs #1 to #4 are transmitted (here, between the transmission start timing of PDSCH #2 and the transmission start timing of PDSCH #3). Here, the case in which a PDSCH is scheduled is shown, but the PDSCH may be replaced with a PUSCH.

[0159] The UE receives first information (e.g., DCI) that schedules the multi-PDSCH and second information (e.g., DCI / MAC CE) that indicates the TCI state. If the indicated TCI state update timing is set to occur in the middle of the multi-PDSCH transmission period, the UE may determine the TCI state to be assumed / applied to each of the multi-PDSCHs #1 to #4 based on the TCI state update timing. The TCI state to be assumed / applied to each of the PDSCHs #1 to #4 may be the TCI state (e.g., the indicated TCI state) that is applied at the time of reception of each PDSCH (at the time of transmission in the case of a PUSCH).

[0160] The TCI state applied at the time of reception of each PDSCH (at the time of transmission in the case of a PUSCH) may be the TCI state corresponding to the first / last / predetermined symbol (or slot) of each PDSCH. Figure 7 shows the case where the TCI state is the first symbol (e.g., start symbol) of each PDSCH.

[0161] That is, the UE applies the TCI state before the update (old unified TCI state) to PDSCHs #1 and #2 whose start symbols are scheduled before the timing of updating the TCI state. In the present disclosure, the old unified TCI state (or the old TCI state) may be the TCI state indicated / activated by the DCI / MAC CE before the timing of updating, or may be a TCI state determined by a predetermined rule (e.g., a default TCI state).

[0162] On the other hand, the UE applies the updated TCI state (new unified TCI state) to PDSCHs #3 and #4 whose start symbols are scheduled after the TCI state update timing. Also, the UE may assume / apply the same TCI state (e.g., new unified TCI state) to the multi-PDSCH (here, PDSCHs #3 and #4) and other channels / reference signals after the TCI state update timing.

[0163] In this way, for multi-PDSCH / multi-PUSCH transmission, the TCI state of each PDSCH / PUSCH is assumed / applied / set separately based on the TCI state update timing, thereby unifying the beam update timing between the multi-PDSCH / multi-PUSCH and other channels / reference signals, thereby simplifying the TCI state / beam control for multiple types of channels / reference signals in the UE / base station.

[0164] When the second embodiment is applied in this way, the timing for updating the beams (or TCI states) of the multi-PDSCH / multi-PUSCH and the timing for updating the beams of other channels / reference signals may be commonly applied. Fig. 7 shows a case where the same timing for updating the TCI states is applied to PDSCH#3 / #4 and other channels / reference signals.

[0165] There may be a case where there is not enough time (e.g., a guard period) between the last PDSCH before the TCI state update timing (PDSCH #2 in FIG. 7) and the first PDSCH after the TCI state update timing (PDSCH #3 in FIG. 7). In such a case, there is a possibility that the UE may not be able to switch the reception beam (e.g., switch the spatial filter used for PDSCH reception / PUSCH transmission) in time for receiving PDSCH #3 (e.g., receiving the start symbol of PDSCH #3).

[0166] Therefore, when the TCI state of each PDSCH / each PUSCH is controlled separately based on the update timing of the TCI state in multi-PDSCH / multi-PUSCH, at least one of the following Option 2-1 and Option 2-2 may be applied.

[0167] [Option 2-1] The UE may perform control so that the first shared channel transmission after the TCI state update timing (or beam update timing) is not performed (see FIG. 8). For example, if the TCI state update timing is set in the middle of a multi-PDSCH transmission period, the UE may not assume that the first PDSCH after the TCI state update timing (for example, PDSCH #3 in FIG. 8) will be transmitted. Alternatively, the UE may perform control so that the first PDSCH after the TCI state update timing (for example, PDSCH #3 in FIG. 8) is not received (or the reception process for PDSCH #3 is skipped).

[0168] Furthermore, when the TCI state update timing is set in the middle of a multi-PUSCH transmission period, the UE may perform control so as not to transmit the first PUSCH at the TCI state update timing (or perform control so as to skip the transmission process of that PUSCH).

[0169] [Option 2-2] A predetermined period (e.g., guard period / gap / time offset x) may be set between the last shared channel before the TCI state update timing (or beam update timing) and the first shared channel after the TCI state update timing (see FIG. 9). For example, when the TCI state update timing is set in the middle of a multi-PDSCH transmission period, the UE may assume that the first PDSCH after the TCI state update timing (e.g., PDSCH#3 in FIG. 9) is scheduled at least a predetermined number of symbols after the last PDSCH before the TCI state update timing (e.g., PDSCH#2 in FIG. 9).

[0170] For example, a guard interval / gap / time offset of at least x symbols may be set between the last symbol of the last PDSCH#2 before the timing of updating the TCI state and the start symbol of the first PDSCH#3 after the timing of updating the TCI state. x may be defined in the specifications (e.g., x=1), or may be set to the UE by the base station using higher layer parameters. The terminal may report its capability regarding the value of x (or regarding the time required to switch the beam / TCI state).

[0171] Option 2-1 / Option 2-2 may be applied / supported only to a specific subcarrier spacing (SCS), which may be, for example, an SCS equal to or greater than a predetermined value (e.g., 480 kHz / 960 kHz).

[0172] Option 2-1 and Option 2-2 may be applied in combination. For example, if a period of at least x symbols is scheduled between the last symbol of the last PDSCH before the TCI status update timing and the start symbol of the first PDSCH after the TCI status update timing, the UE assumes that the first PDSCH after the update timing will be transmitted (or receives the first PDSCH after the update timing). In other cases, the UE does not assume that the first PDSCH after the update timing will be transmitted (or does not receive / skips receiving the first PDSCH after the update timing).

[0173] 7 to 9, the same TCI state (or one TCI state) may be indicated for the multi-PDSCH (here, PDSCHs #1 to #4), or different TCI states (for example, two TCI states) may be indicated. Different TCI states may correspond to different CORESET pool indices or may correspond to the same CORESET pool index.

[0174] When different TCI states (e.g., a first TCI state and a second TCI state) are indicated, the first TCI state may correspond to some PDSCHs (e.g., PDSCH#1 / #3 (e.g., cyclic mapping), or PDSCH#1, #2 (e.g., sequential mapping)), and the second TCI state may correspond to other PDSCHs (e.g., PDSCH#2 / #4, or PDSCH#3, #4).

[0175] The timing of the update to the first TCI state and the timing of the update to the second TCI state may be the same, or the timing of the update to the first TCI state and the timing of the update to the second TCI state may be set differently.

[0176] If the timing of updating to the first TCI state and the timing of updating to the second TCI state are the same, the UE may control the updates to the first TCI state and the second TCI state, respectively, based on the update timing.

[0177] (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.

[0178] 10 is a diagram illustrating an example of a schematic configuration of a wireless communication system according to an embodiment. The wireless communication system 1 may be a system that realizes communication using Long Term Evolution (LTE) or 5th generation mobile communication system New Radio (5G NR) specified by the Third Generation Partnership Project (3GPP).

[0179] The wireless communication system 1 may also support dual connectivity between multiple Radio Access Technologies (RATs) (Multi-RAT Dual Connectivity (MR-DC)). MR-DC may include dual connectivity between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA)) and NR (E-UTRA-NR Dual Connectivity (EN-DC)), dual connectivity between NR and LTE (NR-E-UTRA Dual Connectivity (NE-DC)), etc.

[0180] 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.

[0181] 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))).

[0182] 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.

[0183] 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).

[0184] 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.

[0185] 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.

[0186] 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.

[0187] 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.

[0188] The user terminal 20 may be a terminal compatible with at least one of communication methods such as LTE, LTE-A, and 5G.

[0189] An Orthogonal Frequency Division Multiplexing (OFDM)-based radio access scheme may be used in the radio communication system 1. For example, Cyclic Prefix OFDM (CP-OFDM), Discrete Fourier Transform Spread OFDM (DFT-s-OFDM), Orthogonal Frequency Division Multiple Access (OFDMA), Single Carrier Frequency Division Multiple Access (SC-FDMA), or the like may be used in at least one of the downlink (DL) and uplink (UL).

[0190] 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.

[0191] 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.

[0192] 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.

[0193] 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).

[0194] 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.

[0195] 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.

[0196] 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.

[0197] 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.

[0198] 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.

[0199] 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.

[0200] 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.

[0201] 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.

[0202] 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).

[0203] (base station) 11 is a diagram showing an example of the configuration of a base station according to an embodiment. The base station 10 includes a control unit 110, a transceiver unit 120, a transceiver antenna 130, and a transmission line interface 140. Note that the base station may include one or more of each of the control unit 110, the transceiver unit 120, the transceiver antenna 130, and the transmission line interface 140.

[0204] 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.

[0205] 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.

[0206] 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.

[0207] 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.

[0208] 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.

[0209] 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.

[0210] 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.

[0211] 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.

[0212] 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.

[0213] 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.

[0214] 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 .

[0215] 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 .

[0216] 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.

[0217] 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.

[0218] 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.

[0219] 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.

[0220] The transceiver 120 may transmit downlink first information indicating a schedule for multiple physical shared channel transmissions and second information indicating a unified transmission configuration indicator (TCI).

[0221] When the timing for updating the unified TCI state indicated by the second information is set in the middle of a period in which multiple physical shared channel transmissions are performed, the control unit 110 may control the application of a predetermined TCI state in common to multiple physical shared channel transmissions.

[0222] Alternatively, when the update timing of the unified TCI state indicated by the second information is set in the middle of a period in which multiple physical shared channel transmissions are performed, the control unit 110 may separately control the TCI state to be applied to each physical shared channel transmission based on the update timing of the unified TCI state and the timing of each physical shared channel transmission.

[0223] (user terminal) 12 is a diagram showing an example of the configuration of a user terminal according to one embodiment. The user terminal 20 includes a control unit 210, a transceiver unit 220, and a transceiver antenna 230. Note that the user terminal 20 may include one or more of each of the control unit 210, the transceiver unit 220, and the transceiver antenna 230.

[0224] 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.

[0225] 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.

[0226] 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.

[0227] 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.

[0228] 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.

[0229] The transmitting / receiving antenna 230 can be configured as an antenna described based on common understanding in the technical field to which the present disclosure pertains, such as an array antenna.

[0230] 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.

[0231] 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.

[0232] 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.

[0233] 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.

[0234] 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.

[0235] 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.

[0236] 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.

[0237] 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.

[0238] 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.

[0239] 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.

[0240] The transceiver 220 may receive downlink first information indicating a schedule for multiple physical shared channel transmissions and second information indicating a unified transmission configuration indicator (TCI).

[0241] When the update timing of the unified TCI state indicated by the second information is set in the middle of a period during which multiple physical shared channel transmissions are performed, the control unit 210 may perform control so that a predetermined TCI state is commonly applied to the multiple physical shared channel transmissions. The predetermined TCI state may be a TCI state applied to a specific physical shared channel transmission among the multiple physical shared channel transmissions.

[0242] Alternatively, when the update timing of the unified TCI state indicated by the second information is set in the middle of a period in which multiple physical shared channel transmissions are performed, the control unit 210 may separately control the TCI state to be applied to each physical shared channel transmission based on the update timing of the unified TCI state and the timing of each physical shared channel transmission.

[0243] In addition, the control unit 210 may control the first physical shared channel transmission after the unified TCI state update timing among multiple physical shared channel transmissions so that no transmission processing or reception processing is performed, or may assume that a predetermined period (e.g., a gap / guard period / offset) is provided between the last physical shared channel transmission before the unified TCI state update timing and the first physical shared channel transmission after the unified TCI state update timing.

[0244] (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.

[0245] 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.

[0246] For example, a base station, a user terminal, etc. according to an embodiment of the present disclosure may function as a computer that performs processing of the wireless communication method of the present disclosure. Fig. 13 is a diagram illustrating an example of the hardware configuration of a base station and a user terminal according to an embodiment. The above-described base station 10 and user terminal 20 may be physically configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, etc.

[0247] In this disclosure, terms such as apparatus, circuit, device, section, unit, etc. may be read interchangeably. The hardware configurations of the base station 10 and the user terminal 20 may be configured to include one or more of the devices shown in the drawings, or may be configured to exclude some of the devices.

[0248] 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.

[0249] 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.

[0250] 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.

[0251] 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.

[0252] 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.

[0253] 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.

[0254] 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.

[0255] 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).

[0256] 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.

[0257] 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.

[0258] (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.

[0259] 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.

[0260] 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.

[0261] 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.

[0262] 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.

[0263] 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.

[0264] 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.

[0265] 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.

[0266] 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.

[0267] 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.

[0268] 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.

[0269] 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.

[0270] 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.

[0271] 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.

[0272] 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.

[0273] 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.

[0274] 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.

[0275] 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.

[0276] 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."

[0277] 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.

[0278] 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.

[0279] 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.

[0280] 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.

[0281] 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.

[0282] 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.

[0283] 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.

[0284] 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).

[0285] 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).

[0286] 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).

[0287] 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.

[0288] 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.

[0289] 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).

[0290] 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.

[0291] 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.

[0292] 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.

[0293] In this disclosure, the terms "Mobile Station (MS)," "user terminal," "User Equipment (UE)," "terminal," etc. may be used interchangeably.

[0294] 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.

[0295] 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.

[0296] 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.

[0297] 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.

[0298] 14 is a diagram showing an example of a vehicle according to an embodiment. 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.

[0299] 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.

[0300] 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).

[0301] 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.

[0302] The information service unit 59 is composed of various devices, such as a car navigation system, an audio system, speakers, a display, a television, and a radio, for providing (outputting) various information such as driving information, traffic information, and entertainment information, and one or more ECUs for controlling these devices. The information service unit 59 uses information acquired from external devices via the communication module 60 or the like to provide various information / services (for example, multimedia information / multimedia services) to the occupants of the vehicle 40.

[0303] The information service unit 59 may include input devices (e.g., keyboards, mice, microphones, switches, buttons, sensors, touch panels, etc.) that accept input from the outside, and may also include output devices (e.g., displays, speakers, LED lamps, touch panels, etc.) that output to the outside.

[0304] 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.

[0305] 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.

[0306] 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, user terminal 20, etc. Furthermore, the communication module 60 may be, for example, the above-mentioned base station 10, user terminal 20, etc. (it may function as the base station 10, user terminal 20, etc.).

[0307] The communication module 60 may transmit at least one of signals from the above-mentioned various sensors 50-58 input to the electronic control unit 49, information obtained based on the signals, and information based on input from the outside (user) obtained via the information service unit 59 to an external device via wireless communication. The electronic control unit 49, the various sensors 50-58, the information service unit 59, etc. may be referred to as input units that accept input. For example, the PUSCH transmitted by the communication module 60 may include information based on the above-mentioned input.

[0308] The communication module 60 receives various information (traffic information, traffic signal information, vehicle distance information, etc.) transmitted from external devices and displays it on an information service unit 59 provided in the vehicle. The information service unit 59 may also be called an output unit that outputs information (for example, outputs information to a device such as a display or speaker based on the PDSCH received by the communication module 60 (or data / information decoded from the PDSCH)).

[0309] Furthermore, the communication module 60 stores various information received from external devices in a memory 62 that can be used by the microprocessor 61. Based on the information stored in the memory 62, the microprocessor 61 may control the drive unit 41, steering unit 42, accelerator pedal 43, brake pedal 44, shift lever 45, left and right front wheels 46, left and right rear wheels 47, axles 48, various sensors 50-58, and the like provided in the vehicle 40.

[0310] 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.

[0311] 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.

[0312] 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.

[0313] 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.

[0314] 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).

[0315] 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."

[0316] 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.

[0317] 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.

[0318] 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.

[0319] 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.

[0320] Furthermore, "judgment (decision)" may be interpreted as "assuming," "expecting," "considering," or the like.

[0321] 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.

[0322] 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."

[0323] 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.

[0324] 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."

[0325] 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.

[0326] 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.

[0327] 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.

[0328] This application is based on Japanese Patent Application No. 2022-004894, filed on January 17, 2022, the contents of which are incorporated herein in their entirety.

Claims

1. a receiver for receiving first information scheduling a plurality of physical shared channels and second information indicating a unified Transmission Configuration Indication (TCI) state; a control unit configured to separately control a TCI state to be applied to each physical shared channel based on the update timing of the unified TCI state and a timing at which each physical shared channel of the plurality of physical shared channels is transmitted, when the update timing of the unified TCI state indicated by the second information is set in the middle of a period during which the plurality of physical shared channels are transmitted; The control unit controls the terminal so as not to receive the first physical shared channel after the unified TCI state update timing.

2. receiving first information scheduling a plurality of physical shared channels and second information indicating a unified Transmission Configuration Indication (TCI) state; when the update timing of the unified TCI state indicated by the second information is set in the middle of a period during which the plurality of physical shared channels are transmitted, separately controlling the TCI state to be applied to each of the physical shared channels based on the update timing of the unified TCI state and the timing at which each physical shared channel of the plurality of physical shared channels is transmitted; and performing control so as not to receive the first physical shared channel after the timing of updating the unified TCI state.

3. A system having a terminal and a base station, the terminal includes a receiver configured to receive first information scheduling a plurality of physical shared channels and second information indicating a unified Transmission Configuration Indication (TCI) state; a control unit configured to separately control a TCI state to be applied to each physical shared channel based on the update timing of the unified TCI state and a timing at which each physical shared channel of the plurality of physical shared channels is transmitted, when the update timing of the unified TCI state indicated by the second information is set in the middle of a period during which the plurality of physical shared channels are transmitted; The control unit controls not to receive the first physical shared channel after the unified TCI state update timing, the base station includes a transmitter that transmits the first information and the second information; A system having a control unit that, when the update timing of the unified TCI state is set in the middle of a period in which the multiple physical shared channels are transmitted, controls the TCI state to be applied to each of the physical shared channels separately based on the update timing of the unified TCI state and the timing at which each of the physical shared channels is transmitted.

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