Terminal, wireless communication method, and base station

Abstract

A terminal according to one aspect of the present disclosure comprises: a reception unit that receives downlink control information having a code point indicating a unified transmission configuration indication (TCI) state, and / or a unified TCI state activation / deactivation command; and a control unit that determines a unified TCI state to be applied, on the basis of a period from reception of the downlink control information to application of a unified TCI state corresponding to the code point of the downlink control information, and / or a timing at which the unified TCI state activation / deactivation command is instructed or applied.

Description

Terminal, Wireless Communication Method, and Base Station

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

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

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

[0004] 3GPP TS 36.300 V8.12.0, "Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Overall description; Stage 2 (Release 8)", April 2010

[0005] In future wireless communication systems, it is being considered to apply a unified transmission configuration indication (TCI) state for receiving and transmitting channels or signals.

[0006] However, the operation of such TCI states has not been sufficiently considered. If TCI states are not applied properly, communication quality / throughput may deteriorate.

[0007] Therefore, one of the objectives of this disclosure is to provide a terminal, a wireless communication method, and a base station to which the TCI state can be appropriately applied.

[0008] A terminal according to one aspect of the present disclosure includes a receiving unit that receives at least one of downlink control information having a code point indicating a Unified Transmission Configuration Indication (TCI) state and a Unified TCI state activation / deactivation command, and a control unit that determines the Unified TCI state to apply based on at least one of the period from the time the downlink control information is received until the Unified TCI state corresponding to the code point of the downlink control information is applied and the timing at which the Unified TCI state activation / deactivation command is instructed or applied.

[0009] According to one aspect of this disclosure, the TCI status can be appropriately applied.

[0010] Figure 1 shows an example of the application of a unified TCI state when the TCI state is indicated by DCI. Figure 2 shows an example where a TCI state activation / deactivation command occurs between the indication of the TCI state by DCI and the beam application timing. Figure 3 shows an example of TCI state update control according to Embodiment 1. Figure 4 shows another example of TCI state update control according to Embodiment 1. Figure 5 shows an example of the schematic configuration of a wireless communication system according to one embodiment. Figure 6 shows an example of the configuration of a base station according to one embodiment. Figure 7 shows an example of the configuration of a user terminal according to one embodiment. Figure 8 shows an example of the hardware configuration of a base station and user terminal according to one embodiment. Figure 9 shows an example of a vehicle according to one embodiment.

[0011] (Unified TCI Framework) The Unified TCI Framework allows multiple types of channels / RS (UL / DL) to be controlled by a common framework. Rather than defining TCI states or spatial relationships for each channel as in Rel. 15, the Unified TCI Framework may specify a common beam (joint TCI state) and apply it to all UL and DL channels, or a common beam for UL (UL TCI state) may be applied to all UL channels, and a common beam for DL ​​(DL TCI state) may be applied to all DL channels.

[0012] One beam for both DL and UL (one joint TCI state), or one beam for DL ​​and one beam for UL (two separate TCI states, DL TCI state and UL TCI state) are being considered.

[0013] The Unified TCI Framework supports the following modes 1 through 3: <Mode 1> MAC CE based TCI state indication <Mode 2> DCI based TCI state indication by DCI format 1_1 / 1_2 with DL assignment <Mode 3> DCI based TCI state indication by DCI format 1_1 / 1_2 without DL assignment

[0014] Furthermore, the DCI in Mode 2 / Mode 3 described above may also be called beam-indicating DCI.

[0015] When a DCI-based TCI status indication is applied, a TCI status (e.g., a TCI status ID) may be indicated that is mapped to / associated with a code point in a predetermined field of the DCI (e.g., a transmit setting instruction field or a TCI status field). For example, a TCI status activation / deactivation command (e.g., MAC CE) may indicate the mapping between a code point in a predetermined field of the DCI and a TCI status.

[0016] In this disclosure, the terms DCI-indicated TCI state, indicated TCI state, indicated TCI state, indicated TCI-State, unified TCI state, TCI state conforming to a unified TCI state, TCI state applied to multiple types of channels / signals, joint TCI state for DL ​​and UL, DL TCI state, UL TCI state, Rel. 17 TCI state, common TCI state, single unified TCI state to be set, and single unified TCI state to be activated may be interpreted as one another.

[0017] In this disclosure, the terms TCI state set by RRC parameters, configured TCI state, configured TCI state, configured TCI-State, TCI state that does not conform to the unified TCI state, TCI state other than the unified TCI state, TCI state / spatial relationship set for a specific channel / signal, and individual TCI state may be interpreted interchangeably.

[0018] <Application of Indicated TCI State in Rel. 17> The indicated TCI state by MAC CE / DCI may be applied to the following channels / RS:

[0019] <<PDCCH>> A single TCI state applied to PDCCH may be based on the following: - If followUnifiedTCIState (follow Unified TCI state) is set for CORESET0, the indicative TCI state is applied. Otherwise, the Rel. 15 specification is applied to that CORESET. That is, CORESET0 follows the TCI state activated by MAC CE, or is QCL'd with SSB. - The indicative TCI state is always applied to CORESETs other than index 0 that have at least one of a UE-specific search space (USS) [set] and a Type 3-PDCCH common search space (CSS) [set]. - If follow Unified TCI state is set for CORESETs other than index 0 that have at least a CSS [set] of Type 3-PDCCH CSS [set], the indicative TCI state is applied. Otherwise, the configured TCI state for that CORESET is applied to that CORESET.

[0020] <<PDSCH>> A single TCI state applied to a PDSCH may be based on the following: - For all UE-dedicated PDSCHs, the indicative TCI state is always applied. - For non-UE-dedicated PDSCHs (PDSCHs scheduled by DCI in a CSS [set]), the indicative TCI state may be applied if followUnifiedTCIState is set [for the CORESET of the PDCCH that schedules the PDSCH]. Otherwise, the set TCI state for that PDSCH is applied to that PDSCH. If followUnifiedTCIState is not set for a PDSCH, whether a non-UE-dedicated PDSCH follows the indicative TCI state may be determined by whether followUnifiedTCIState is set for the CORESET used to schedule that PDSCH.

[0021] <<CSI-RS>> A single TCI state applied to a CSI-RS may be based on the following: For an aperiodic (A)-CSI-RS for CSI acquisition or beam management, the indicated TCI state is applied if followUnifiedTCIState is set [for the CORESET of the PDCCH that triggers that A-CSI-RS]. For other CSI-RSs, the configured TCI state for that CSI-RS is applied.

[0022] <<PUCCH>> A single TCI state applied to PUCCH may be based on the following: - The indicative TCI state is always applied to all dedicated PUCCH resources.

[0023] <<PUSCH>> A single TCI state applied to a PUSCH may be based on the following: - For dynamic / configured grant PUSCHs, the instructive TCI state is always applied.

[0024] <<SRS>> A single TCI state applied to an SRS may be based on the following: If the SRS resource set for aperiodic (A)-SRS for beam management applications and codebook (CB) / non-codebook (NCB) / antenna switching applications A / semi-persistent (SP) / periodic (P)-SRS is configured to follow a unified TCI state, the indicated TCI state is applied. For other SRSs, the configured TCI state within that SRS resource set is applied.

[0025] In this disclosure, the terms "indicator TCI state," "unified TCI state," "TCI state applied to a channel / signal configured to conform to a unified TCI state," "TCI state applied to UE individual PDSCH and CORESET / PDCCH associated with USS [set]," and "TCI state applied to PUCCH and PUSCH" may be interpreted interchangeably.

[0026] (Analysis) In a unified TCI state, if the TCI state is indicated by a TCI state field included in a predetermined DCI format (e.g., DCI format 1_1 / 1_2), the TCI state is updated based on a predetermined timing (e.g., application timing).

[0027] For example, when a UE with a higher-layer parameter for the TCI state list (e.g., dl-OrJointTCI-StateList) is set, and it transmits a PUCCH or PUSCH having a HARQ-ACK corresponding to a DCI without a DL assignment and accompanied by a TCI state indication (e.g., positive HARQ-ACK), or a HARQ-ACK corresponding to a PDSCH scheduled by a DCI with a TCI state indication, and the indicated TCI state is different from an already indicated TCI state, the indicated TCI state (TCI-State / TCI-UL-State) is applied from at least the first slot after the beam application time (beamAppTime) symbol from the last symbol of the PUCCH or PUSCH.

[0028] If the UE receives more than one indicated TCI state for a CC / BWP applied from at least the first slot after the beam application time (beamAppTime) symbol from the last symbol of PUCCH or PUSCH, the indicated TCI state included in the latest DCI corresponding to a positive HARQ-ACK is applied.

[0029] Figure 1 shows an example where, in a case where the first TCI state #1 is applied, the UE receives a DCI indicating the second TCI state #2 (TCI code point #2). The UE transmits a PUCCH or PUSCH with a HARQ-ACK (e.g., a positive HARQ-ACK) corresponding to the DCI (or the PDSCH scheduled by the DCI). The UE may control the application of the second TCI state #2 (updating from the first TCI state #1 to the second TCI state #2) from the first slot at least one beam application time symbol (e.g., a Y symbol) after the last symbol of the PUCCH or PUSCH.

[0030] The TCI states (e.g., TCI state IDs) mapped to each code point in the TCI state field included in the DCI may be pre-instructed / set by a TCI state activation / deactivation command (e.g., MAC CE). If a TCI state activation command is instructed, it may become effective from the first slot after a predetermined period (e.g., 3 ms) following a HARQ-ACK (or PUCCH) to the PDSCH transmitting the MAC CE for the TCI state activation command.

[0031] However, there may be cases where the timing for issuing / applying a TCI state activation / deactivation command occurs between receiving a DCI indicating the TCI state and updating the indicated TCI state. For example, if the issuing / applying of a TCI state activation / deactivation command occurs between the TCI indication by the DCI and the application timing, the question arises as to which TCI state corresponds to the active TCI state indicated by the DCI (or TCI state field). Application timing may be interpreted as the first slot after the application time symbol.

[0032] For example, consider a case where a TCI state activation / deactivation command is issued (or applied) after a certain code point is specified by DCI. In such a case, the question arises as to which active TCI state should be applied to the code point: the active TCI state at the time of DCI specification, or the active TCI state at the beam application timing (or update time).

[0033] Figure 2 shows an example of when a TCI state activation / deactivation command is instructed (or applied) between the time the UE receives a DCI indicating a second TCI state #2 (TCI code point #2) and the first slot after the beam application time symbol (e.g., the Y symbol). The first slot after the beam application time symbol (e.g., the Y symbol) may be interpreted as HARQ-ACK (or the last symbol of PUCCH / PUSCH), or after the beam application time symbol (e.g., the Y symbol).

[0034] This example illustrates the case where TCI state #6 is mapped / activated to TCI code point #2 by the TCI state activation / deactivation command. In this case, the UE is concerned with determining which state is applied in the first slot after the beam application time symbol (e.g., the Y symbol): TCI state #2, which was activated at the time indicated by DCI (TCI code point #2), or TCI state #6, which was activated (newly activated) at the time of beam application time (or the first slot after beam application time).

[0035] The inventors focused on cases where TCI state activation / deactivation commands are issued / applied between the TCI instruction by DCI and the application of the instructed TCI state, and investigated the application of a unified TCI state, conceiving one aspect of this embodiment.

[0036] The embodiments of this disclosure will be described in detail below with reference to the drawings. Each wireless communication method according to the embodiments may be applied individually or in combination.

[0037] (Various substitutions) In this disclosure, words enclosed in parentheses () may indicate an explanation of the preceding word (e.g., an explanation of spelling), a paraphrase, a specific example, or supplementary explanation. Also, in this disclosure, words enclosed in square brackets [] may be interpreted as part of the overall meaning of the text, or they may be interpreted as being excluded (ignored). Note that parentheses () and square brackets [] may be used for purposes / meanings other than those described above.

[0038] In this disclosure, "A / B" and "at least one of A and B" may be interpreted as mutually exclusive. In this disclosure, "A / B / C" may mean "at least one of A, B, and C".

[0039] In this disclosure, terms such as notice, activate, deactivate, indicate (or specify), select, configure, update, and determine may be interpreted interchangeably. In this disclosure, terms such as support, control, controllable, operate, and capable of operating may be interpreted interchangeably.

[0040] In this disclosure, Radio Resource Control (RRC), RRC parameters, RRC messages, higher-layer parameters, fields, Information Elements (IE), settings, etc., may be interpreted interchangeably. In this disclosure, Medium Access Control elements (MAC Control Elements (CE)), update commands, activation / deactivation commands, etc., may be interpreted interchangeably.

[0041] In the present disclosure, the upper layer signaling may be, for example, any one of Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information, other messages (such as messages from the core network, such as positioning protocol (e.g., NR Positioning Protocol A (NRPPa) / LTE Positioning Protocol (LPP)) messages), or a combination thereof.

[0042] In the present disclosure, the MAC signaling may use, for example, a MAC control element (MAC Control Element (MAC CE)), a MAC Protocol Data Unit (PDU), etc. The broadcast information may be, for example, a Master Information Block (MIB), a System Information Block (SIB), Remaining Minimum System Information (RMSI), Other System Information (OSI), etc.

[0043] In the present disclosure, the physical layer signaling may be, for example, Downlink Control Information (DCI), Uplink Control Information (UCI), etc.

[0044] In the present disclosure, multi (plural) TRP, multi-TRP system, multi-TRP transmission, multi-PDSCH may be read interchangeably with each other.

[0045] In the present disclosure, single DCI, single PDCCH, multi-TRP based on single DCI, activation of two TCI states on at least one TCI code point, mapping of at least one code point of the TCI field to two TCI states, and setting of a specific index (e.g., TRP index, CORESET pool index, or an index corresponding to the TRP) for a specific channel / CORESET may be mutually interchangeable.

[0046] In the present disclosure, single TRP, a channel / signal using single TRP, a channel using one TCI state / spatial relationship, non-activation of multi-TRP by RRC / DCI, non-activation of multiple TCI states / spatial relationships by RRC / DCI, non-setting of a CORESET pool index (CORESETPoolIndex) value of 1 for any CORESET, and non-mapping of any code point of the TCI field to two TCI states may be mutually interchangeable.

[0047] In the present disclosure, TRP#1 (the first TRP) may correspond to CORESET pool index = 0 or may correspond to the first TCI state among two TCI states corresponding to one code point of the TCI field. TRP#2 (the second TRP) TRP#1 (the first TRP) may correspond to CORESET pool index = 1 or may correspond to the second TCI state among two TCI states corresponding to one code point of the TCI field.

[0048] In the present disclosure, single DCI (sDCI), single PDCCH, a multi-TRP system based on single DCI, sDCI-based MTRP, and activation of two TCI states on at least one TCI code point may be mutually interchangeable.

[0049] In this disclosure, beam indicator DCI, beam indicator MAC CE, and beam indicator DCI / MAC CE may be interpreted as interchangeable. In other words, an indication of the TCI state for a UE may be made using at least one of DCI and MAC CE.

[0050] In this disclosure, channel, signal, and channel / signal may be interpreted as interchangeable. In this disclosure, DL channel, DL signal, DL signal / channel, DL signal / channel transmission / reception, DL reception, and DL transmission may be interpreted as interchangeable. In this disclosure, UL channel, UL signal, UL signal / channel, UL signal / reception, UL reception, and UL transmission may be interpreted as interchangeable.

[0051] In this disclosure, applying TCI state / QCL assumptions to each channel / signal / resource may mean applying TCI state / QCL assumptions to the transmission and reception of each channel / signal / resource.

[0052] In this disclosure, a first TRP may correspond to a first TCI state (the first indicated TCI state). In this disclosure, a second TRP may correspond to a second TCI state (the second indicated TCI state). In this disclosure, an nth TRP may correspond to an nth TCI state (the nth indicated TCI state).

[0053] In this disclosure, the value of the first CORESET pool index (e.g., 0), the value of the first TRP index (e.g., 1), and the first TCI state (first DL / UL (joint / separate) TCI state) may correspond to each other. In this disclosure, the value of the second CORESET pool index (e.g., 1), the value of the second TRP index (e.g., 2), and the second TCI state (second DL / UL (joint / separate) TCI state) may correspond to each other.

[0054] In the embodiments of this disclosure described below, the application of multiple TCI states in transmission and reception using multiple TRPs will mainly be described in terms of a method targeting two TRPs (i.e., when at least one of N and M is 2). However, the number of TRPs may be three or more (multiple), and each embodiment may be applied in accordance with the number of TRPs. In other words, at least one of N and M may be a number greater than 2.

[0055] (Wireless communication method) <First embodiment> The first embodiment relates to an example of applying a unified TCI state based on a TCI state activation / deactivation command and a DCI that indicates the TCI state.

[0056] If a TCI status activation / deactivation command occurs between the DCI's TCI status indication (or DCI reception) and the beam application timing, at least one of the following options 1-1 to 1-4 may be applied.

[0057] Here, the TCI status activation / deactivation command may be interpreted as the instruction for the TCI status activation / deactivation command, or the timing for applying the TCI status activation / deactivation command. The time between the DCI indication of the TCI status and the beam application timing may be interpreted as the time between the DCI indication of the TCI status and the first slot after the beam application timing, or the time between the DCI indication of the TCI status and the HARQ-ACK (or the last symbol of PUCCH / PUSCH). The DCI indication of the TCI status may be interpreted as the transmission of the HARQ-ACK in response to the DCI indication of the TCI status.

[0058] [Option 1-1] The UE may assume that when a DCI instruction for a TCI state is given, a DCI instruction for an active TCI state is given. In other words, the TCI state that is activated at the time the DCI instruction for a TCI state (a certain code point) is given (the TCI state mapped to a certain code point at the time of DCI reception) may be selected.

[0059] In this case, the UE applies the TCI state indicated by the DCI that indicates the TCI state, starting from the first slot after the beam application timing (see Figure 3). Figure 3 shows the case where a TCI state activation / deactivation command (where TCI state #6 is mapped to TCI code point #2) is instructed / applied between the time the UE receives the DCI indicating the second TCI state #2 (TCI code point #2) and the beam application timing.

[0060] In this case, the UE may control the application of the second TCI state #2 starting from the first slot after the beam application time symbol (e.g., the Y symbol).

[0061] In Option 1-1, even if a TCI state activation / deactivation command occurs between the DCI's TCI state indication and the beam application timing (as if it does not occur), the indicated TCI state may be based on the TCI state activated in the slot where the DCI with the TCI state indication was received.

[0062] When a network (or base station) transmits a DCI indicating a TCI state, the base station wants to update to the TCI state corresponding to the DCI indication based on the active TCI state at the time of the DCI indication. Therefore, even if a TCI state activation / deactivation command is issued (or applied) between the DCI indication and the beam application timing, the base station can update to the desired TCI state by configuring the system so that the active TCI state at the time of the DCI indication is applied.

[0063] In option 1-1, at least one of the following options 1-1-1 to 1-1-3 may be applied.

[0064] [[Option 1-1-1]] There is no need to specify whether the active TCI state is updated or not between the DCI indication of the TCI state and the beam application timing.

[0065] In option 1-1-1, the indicated TCI state may be based on the TCI states activated in the slot where the DCI with the TCI state indication was received (e.g., activated TCI states).

[0066] In this case, if a TCI state activation / deactivation command is issued (or the application timing arrives) between the DCI's TCI state indication and the beam application timing, the UE may control to monitor both the TCI state before it is updated by the TCI state activation / deactivation command (e.g., TCI state #2 (or TCI states #1-#4)) and the newly activated TCI state (e.g., TCI state #6 (or TCI states #4-#7)).

[0067] [Option 1-1-2] A restriction may be specified regarding whether or not the active TCI state is updated between the DCI indication of the TCI state and the beam application timing.

[0068] For example, the active TCI state does not need to be updated between the DCI indication of the TCI state and the beam application timing.

[0069] In this case, the configuration may be such that the timing for issuing / applying the TCI status activation / deactivation command does not occur between the DCI status indication and the beam application timing. Alternatively, if the timing for issuing / applying the TCI status activation / deactivation command occurs between the DCI status indication and the beam application timing, the configuration may be such that it is effectively applied after the beam application timing (or after the first slot following the beam application timing).

[0070] The UE may assume that there is no timing for issuing / applying a TCI state activation / deactivation command between the DCI's TCI state indication and the beam application timing. Alternatively, if there is timing for issuing / applying a TCI state activation / deactivation command between the DCI's TCI state indication and the beam application timing, the UE may update the active TCI state mapped to each DCI code point after the beam application timing (or the first slot after the beam application timing).

[0071] In option 1-1-2, the indicated TCI state may be based on the TCI state activated in the slot where the DCI with the TCI state indication was received, and the UE may expect / assume that the activated TCI state is the same between the slot where the DCI with the TCI state indication was received and the slot to which the indicated TCI state is applied.

[0072] [[Option 1-1-3]] The active TCI state may be updated between the DCI indication of the TCI state and the beam application timing.

[0073] In this case, the TCI state activated by the TCI state activation / deactivation command may be updated between the time of receiving the DCI indicating the TCI state and the beam application timing (or the first slot of the beam application timing). However, the UE may assume that the active TCI state corresponding to the code point indicated by the DCI will not be updated, but the active TCI state corresponding to other code points will be updated.

[0074] The UE may assume that the active TCI state corresponding to the code point indicated by DCI is updated from the first slot after beam application timing.

[0075] [Variations] Option 1-1 (or at least one of Options 1-1-1 to 1-1-3) shows the case where the active TCI state is selected when receiving a DCI indicating the TCI state, but the active TCI state when transmitting a HARQ-ACK in response to a DCI instruction indicating the TCI state may also be selected.

[0076] [Option 1-2] The UE may assume that a DCI instruction for the active TCI state was given at beam application timing (or at the first slot after beam application timing). In other words, at beam application timing (or at the first slot after beam application timing), the active TCI state (the active TCI state corresponding to each code point of the DCI) indicated by the latest TCI state activation / deactivation command may be selected.

[0077] In this case, the UE applies the TCI state corresponding to the beam application timing (or the first slot after the beam application timing) starting from the first slot after the beam application timing (see Figure 4). If a TCI state activation / deactivation command is applied between the DCI instruction and the beam application timing, a new activated TCI state may be applied.

[0078] Figure 4 shows the case where a TCI state activation / deactivation command (where TCI state #6 is mapped to TCI code point #2) is instructed / applied between the time the UE receives a DCI indicating a second TCI state #2 (TCI code point #2) and the beam application timing.

[0079] In this case, the UE may control the application of TCI state #6 from the first slot after the beam application time symbol (e.g., the Y symbol).

[0080] In option 1-2, if a TCI state activation / deactivation command occurs between the DCI's TCI state indication and the beam application timing, the indicated TCI state may be based on the TCI state activated in the slot to which the indicated TCI state applies.

[0081] The UE may maintain / monitor only one set of active TCI states (e.g., one set of TCI states #0 to #3, or one set of TCI states #4 to #7). When an active TCI state is updated, the UE may release / ignore the previous active TCI state (e.g., TCI states #0 to #3 in Figure 4). This reduces the load on the UE by eliminating the need for the UE to manage (e.g., maintain / monitor) multiple sets of active TCI states.

[0082] In option 1-2, at least one of the following options 1-2-1 to 1-2-3 may be applied.

[0083] [Option 1-2-1] The restriction on whether the active TCI state is updated or not between the DCI indication of the TCI state and the beam application timing does not need to be specified.

[0084] In option 1-2-1, the indicated TCI state may be based on the TCI states (e.g., activated TCI states) activated in the slot to which the indicated TCI state applies (e.g., the first slot after beam application timing).

[0085] In this case, if a TCI state activation / deactivation command is issued (or the timing for its application occurs) between the DCI's TCI state indication and the beam application timing, the UE may control the monitoring of either the TCI state before it is updated by the TCI state activation / deactivation command (e.g., TCI state #2 (or TCI states #1-#4)) or the newly activated TCI state (e.g., TCI state #6 (or TCI states #4-#7)).

[0086] For example, the UE may be controlled to monitor the TCI state (e.g., TCI state #2 (or TCI states #1-#4)) before a TCI state activation / deactivation command is issued (or when the application timing arrives), and to monitor the TCI state (e.g., TCI state #6 (or TCI states #4-#7)) after a TCI state activation / deactivation command is issued (or when the application timing arrives).

[0087] [Option 1-2-2] A restriction may be specified regarding whether or not the active TCI state is updated between the DCI indication of the TCI state and the beam application timing.

[0088] For example, the active TCI state does not need to be updated between the DCI indication of the TCI state and the beam application timing.

[0089] In this case, if the timing for issuing / applying a TCI status activation / deactivation command falls between the DCI status indication and the beam application timing, the configuration may be set so that it is effectively applied after the beam application timing (or the first slot after the beam application timing).

[0090] If the timing for issuing / applying a TCI status activation / deactivation command occurs between the DCI's TCI status indication and the beam application timing, the UE may update the active TCI status mapped to each DCI code point after the beam application timing (or the first slot after the beam application timing).

[0091] In option 1-2-2, the indicated TCI state may be based on the activated TCI states (e.g., activated TCI states) in the slot to which the indicated TCI state applies (e.g., the first slot after beam application timing), and the UE may expect / assume that the activated TCI states may differ between the slot that received the DCI with the TCI state indication and the slot to which the indicated TCI state applies (or may be the same as the TCI state indicated by the TCI state activation / deactivation command).

[0092] Alternatively, in option 1-2-2, the configuration may be such that the active TCI state corresponding to the code point indicated by the DCI indicating the TCI state is not updated (the active TCI state corresponding to other code points may be updated). In this case, the indicated TCI state may be based on the activated TCI states (e.g., activated TCI states) in the slot to which the indicated TCI state is applied (e.g., the first slot after beam application timing), and the UE may expect / assume that the activated TCI states are the same between the slot that received the DCI with the TCI state indication and the slot to which the indicated TCI state is applied.

[0093] [[Option 1-2-3]] The active TCI state may be updated between the DCI indication of the TCI state and the beam application timing.

[0094] In this case, the TCI state activated by the TCI state activation / deactivation command may be updated between the time of receiving the DCI indicating the TCI state and the beam application timing (or the first slot of the beam application timing). However, the UE may assume that the active TCI state corresponding to the code point indicated by the DCI will not be updated, but the active TCI state corresponding to other code points will be updated.

[0095] The UE may assume that the active TCI state corresponding to the code point indicated by DCI is updated from the first slot after beam application timing.

[0096] [Options 1-3] The configuration may be such that the active TCI state is not updated between the DCI indication (or DCI reception) and the beam application timing. For example, the UE does not need to expect / assume that the active TCI state will be updated between the DCI indication (or DCI reception) and the beam application timing.

[0097] In options 1-3, the UE may expect / assume that the activated TCI state is the same between the slot that received the DCI with a TCI state instruction and the slot to which the instruction TCI state is applied. Alternatively, the UE may not expect / assume that the activated TCI state is updated between the slot that received the DCI with a TCI state instruction and the slot to which the instruction TCI state is applied.

[0098] [Options 1-4] When the UE applies a specified TCI state to DL reception / UL transmission, it may determine based on the activated TCI state in each slot (e.g., the slot performing DL reception / UL transmission). For example, the unified TCI state to be applied (or updated) may be determined solely according to the active TCI state at the time of transmission / reception of the channel / reference signal to which the specified TCI state is applied.

[0099] In options 1-4, the indicated TCI state (e.g., indicated TCI-State / TCI-UL-State) may be based on the activated TCI states (activated TCI-States / TCI-UL-States) in each slot to which the UE applies the indicated TCI state (e.g., indicated TCI-State / TCI-UL-State) for at least one of the DL channel / signal and UL channel / signal.

[0100] In this case, the UE may maintain / monitor only one set of active TCI states for each slot (for example, only one or more TCI states that are activated at any given time for each slot). This eliminates the need for the UE to manage (e.g., maintain / monitor) multiple sets of active TCI states, thereby reducing the load on the UE.

[0101] For example, if a TCI state activation / deactivation command is issued between the DCI indication (or DCI reception) of the TCI state and the beam application timing, the active TCI state (e.g., the TCI state indicated by the TCI state activation / deactivation command) in the slot receiving the DL channel / signal and the slot transmitting the UL channel / signal may be applied.

[0102] [Variations] Options 1-1 to 1-4 may support / define a specific option (e.g., only one). Alternatively, multiple options may be supported, and the applicable option may be determined based on RRC signaling / UE capabilities. For example, if the UE does not support options 1-1 / 1-2, option 1-3 may be applied.

[0103] In options 1-1 to 1-4, the TCI state may mean at least one of the joint TCI state, DL TCI state, or UL TCI state.

[0104] Options 1-1 to 1-4 may also apply to a unified TCI state framework in a single DCI / multi-DCI based multi-TRP (e.g., updating of unified TCI states). In this case, one indicated TCI state may be read as one or more indicated TCI states(s).

[0105] <Supplement> <<Notification of Information to UE>> In the embodiments described above, notification of any information from the Network (NW) (e.g., Base Station (BS)) to the UE (in other words, reception of any information from the BS at the UE) may be performed using physical layer signaling (e.g., DCI), higher layer signaling (e.g., RRC signaling, MAC CE), specific signals / channels (e.g., PDCCH, PDSCH, reference signal), or a combination thereof.

[0106] If the above notification is made by a MAC CE, the MAC CE may be identified by the inclusion of a new Logical Channel ID (LCID) not defined in existing standards in the MAC subheader.

[0107] If the above notification is made by DCI, the notification may be made by a specific field of the DCI, a Radio Network Temporary Identifier (RNTI) used to scramble the Cyclic Redundancy Check (CRC) bits assigned to the DCI, or the format of the DCI.

[0108] Furthermore, the notification of arbitrary information to the UE in the above-described embodiment may be periodic, semi-persistent, or aperiodic.

[0109] <<Notification of Information from UE>> Notification of any information from the UE to the NW in the embodiments described above (in other words, transmission / reporting of any information from the UE to the BS) may be performed using physical layer signaling (e.g., UCI), higher layer signaling (e.g., RRC signaling, MAC CE), specific signals / channels (e.g., PUCCH, PUSCH, PRACH, reference signals), or a combination thereof.

[0110] If the above notification is made by a MAC CE, the MAC CE may be identified by the inclusion of a new LCID not specified in existing standards in the MAC subheader.

[0111] If the above notice is made by the UCI, the notice may be transmitted using PUCCH or PUSCH.

[0112] Furthermore, the notification of any information from the UE in the above-described embodiment may be periodic, semi-persistent, or aperiodic.

[0113] <<Regarding the application of each embodiment>> In UE / BS, specific (one or more) processes / operations / controls / assumptions / information for at least one of the embodiments described above may be applied (or used) if any or more of the following conditions are met: - A higher-layer parameter indicating the specific process / operation / control / assumption / information is set; - The specific process / operation / control / assumption / information is determined based on the relevant higher-layer parameter; - The specific process / operation / control / assumption / information is designated / activated / triggered by MAC CE / DCI / UCI / Resource / Channel / RS; - A specific UE capability indicating (or related to) the specific process / operation / control / assumption / information is reported or supported; - The application of the specific process / operation / control / assumption / information is determined based on specific conditions.

[0114] The above-mentioned specific UE capabilities may include at least one of the following: supporting the above-mentioned specific processing / operation / control / assumment / information; and supporting the application of TCI state activation / deactivation commands between the DCI indicating the TCI state and the beam application timing.

[0115] Furthermore, the above-mentioned specific UE capability may be a capability that applies across all frequencies (commonly regardless of frequency), a capability per frequency (e.g., one or a combination thereof, such as cell, band, band combination, BWP, component carrier, etc.), a capability per frequency range (e.g., Frequency Range 1 (FR1), FR2, FR3, FR4, FR5, FR2-1, FR2-2), a capability per subcarrier spacing (SCS), or a capability per feature set (FS) or feature set per component-carrier (FSPC).

[0116] Furthermore, the specific UE capabilities described above may be capabilities that apply across all duplexing schemes (common to all duplexing schemes regardless of the duplexing scheme), or they may be capabilities specific to each duplexing scheme (e.g., Time Division Duplex (TDD), Frequency Division Duplex (FDD)).

[0117] If the above conditions are not met, UE / BS may follow the behavior specified in existing 3GPP releases.

[0118] (Note) The following inventions are added with respect to one embodiment of the present disclosure. [Note 1] A terminal having: a receiving unit that receives at least one of downlink control information having a code point indicating a Unified Transmission Configuration Indication (TCI) state and a Unified TCI state activation / deactivation command; and a control unit that determines the Unified TCI state to apply based on at least one of the period from the time the downlink control information is received until the Unified TCI state corresponding to the code point of the downlink control information is applied and the timing at which the Unified TCI state activation / deactivation command is instructed or applied. [Note 2] The terminal according to Note 1, wherein if the timing at which the Unified TCI state activation / deactivation command is instructed or applied occurs during the period from the time the downlink control information is received until the Unified TCI state corresponding to the code point of the downlink control information is applied, the control unit controls itself to apply the Unified TCI state that was activated at the time the downlink control information was received. [Note 3] The terminal according to Note 1 or Note 2, wherein if the timing for instructing or applying the Unified TCI State Activation / Deactivation Command comes during the period from receiving the Downlink Control Information to applying the Unified TCI State corresponding to the Code Point of the Downlink Control Information, the control unit controls the terminal to apply the Unified TCI State activated by the Unified TCI State Activation / Deactivation Command. [Note 4] The terminal according to any one of Notes 1 to 3, wherein the control unit does not assume that the Unified TCI State activated by the Unified TCI State Activation / Deactivation Command will be updated during the period from receiving the Downlink Control Information to applying the Unified TCI State corresponding to the Code Point of the Downlink Control Information.

[0119] (Wireless Communication System) The configuration of a wireless communication system according to one embodiment of this disclosure will be described below. In this wireless communication system, communication is performed using any of the wireless communication methods according to the above embodiments of this disclosure, or a combination thereof.

[0120] Figure 5 shows an example of a schematic configuration of a wireless communication system according to one embodiment. The wireless communication system 1 (which may also be simply called system 1) may be a system that realizes communication using Long Term Evolution (LTE), 5th generation mobile communication system New Radio (5G NR), etc., as specified by the Third Generation Partnership Project (3GPP).

[0121] Furthermore, the wireless communication system 1 may support dual connectivity between multiple Radio Access Technologies (RATs) (Multi-RAT Dual Connectivity (MR-DC)). MR-DC may include dual connectivity between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA)) and NR (E-UTRA-NR Dual Connectivity (EN-DC)), dual connectivity between NR and LTE (NR-E-UTRA Dual Connectivity (NE-DC)), and the like.

[0122] 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.

[0123] The wireless communication system 1 may support dual connectivity between multiple base stations within the same RAT (for example, dual connectivity where both MN and SN are NR base stations (gNB) (NR-NR Dual Connectivity (NN-DC))).

[0124] The wireless communication system 1 may include a base station 11 that forms a macrocell C1 with relatively wide coverage, and base stations 12 (12a-12c) located within the macrocell C1 that form a small cell C2 that is narrower than the macrocell C1. User terminals 20 may be located within at least one cell. The arrangement, number, shape, size, etc., of each cell and user terminal 20 are not limited to the configuration shown in the figure. Hereinafter, when base stations 11 and 12 are not distinguished, they will be collectively referred to as base station 10.

[0125] The wireless communication system 1 may utilize Multi Input Multi Output (MIMO). For example, one cell may be formed by one antenna / base station 10, or by multiple antennas / base stations 10. One [virtual] cell (which may be called a supercell, for example) may be composed of multiple [virtual] cells (which may be called subcells, for example). A supercell may correspond to a cell with a fixed physical range, and a subcell may correspond to a cell whose physical range fluctuates quasi-statically / dynamically. In this case, the wireless communication system 1 may be called a cell-free system.

[0126] 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).

[0127] Each CC may be included in at least one of the first frequency band (Frequency Range 1 (FR1)) and the second frequency band (Frequency Range 2 (FR2)). A macrocell C1 may be included in FR1, and a 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. Note that the frequency bands and definitions of FR1 and FR2 are not limited to these, and for example, FR1 may be in a frequency band higher than FR2.

[0128] Furthermore, the user terminal 20 may communicate in each CC using at least one of Time Division Duplex (TDD) and Frequency Division Duplex (FDD).

[0129] Multiple base stations 10 may be connected by wire (e.g., optical fiber compliant with Common Public Radio Interface (CPRI), X2 / Xn interface, etc.) or wireless (e.g., NR communication). For example, when NR communication is used as a backhaul between base stations 11 and 12, base station 11, which is the upstream station, may be called an Integrated Access Backhaul (IAB) donor, and base station 12, which is the relay station, may be called an IAB node.

[0130] Base station 10 may be connected to the core network 30 via other base stations 10 or directly. The core network 30 may include at least one of the following: Evolved Packet Core (EPC), 5G Core Network (5GCN), Next Generation Core (NGC), etc.

[0131] The core network 30 may include network functions (NF) such as User Plane Function (UPF), Access and Mobility Management Function (AMF), Session Management Function (SMF), Unified Data Management (UDM), Application Function (AF), Data Network (DN), Location Management Function (LMF), and Operation, Administration and Maintenance (Management) (OAM). Multiple functions may be provided by a single network node. Furthermore, communication with an external network (e.g., the Internet) may occur via the DN.

[0132] The user terminal 20 may be a terminal that supports at least one of the following communication methods: LTE, LTE-A, 5G, etc.

[0133] In the wireless communication system 1, an orthogonal frequency division multiplexing (OFDM)-based wireless access scheme may be used. 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-OFDM), etc., may be used in at least one of the downlink (DL) and uplink (UL).

[0134] The wireless access method may also be called a waveform. In wireless communication system 1, other wireless access methods (for example, other single-carrier transmission methods, other multi-carrier transmission methods) may be used for the UL and DL wireless access methods.

[0135] In the wireless communication system 1, a Physical Downlink Shared Channel (PDSCH), a Broadcast Channel (PBCH), or a Physical Downlink Control Channel (PDCCH) may be used as the downlink channel, which is shared by each user terminal 20.

[0136] Furthermore, in the wireless communication system 1, the uplink channel may include a Physical Uplink Shared Channel (PUSCH), a Physical Uplink Control Channel (PUCCH), a Physical Random Access Channel (PRACH), or the like, all of which are shared by each user terminal 20.

[0137] User data, higher-layer control information, and System Information Blocks (SIBs) are transmitted via PDSCH. User data and higher-layer control information may also be transmitted via PUSCH. Furthermore, Master Information Blocks (MIBs) may be transmitted via PBCH.

[0138] Lower-layer control information may be transmitted by PDCCH. The lower-layer control information may include, for example, Downlink Control Information (DCI) which includes scheduling information for at least one of PDSCH and PUSCH.

[0139] Furthermore, the DCI that schedules PDSCH may be called DL assignment, DL DCI, etc., and the DCI that schedules PUSCH may be called UL grant, UL DCI, etc. Furthermore, PDSCH may be read as DL data, and PUSCH may be read as UL data.

[0140] PDCCH detection may utilize a Control Resource Set (CORESET) and a search space. A CORESET corresponds to the resources used to search for DCIs. A search space corresponds to the search area and search method for PDCCH candidates. A single CORESET may be associated with one or more search spaces. A UE may monitor CORESETs associated with a given search space based on the search space configuration.

[0141] A single search space may correspond to one or more PDCCH candidates corresponding to aggregation levels. One or more search spaces may be referred to as a search space set. In this disclosure, "search space," "search space set," "search space configuration," "search space set configuration," "CORESET," and "CORESET configuration" may be interpreted interchangeably.

[0142] PUCCH may transmit uplink control information (UCI) including at least one of channel state information (CSI), delivery acknowledgment information (for example, Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK), ACK / NACK, etc.), and scheduling request (SR). PRACH may transmit a random access preamble for establishing a connection with the cell.

[0143] In this disclosure, downlinks, uplinks, etc., may be expressed without the prefix "link." Also, the prefix "physical" may be omitted from the names of various channels.

[0144] 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, the DL-RS may include 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.

[0145] 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 SS (PSS, SSS) and PBCH (and DMRS for PBCH) may be called an SS / PBCH block, SS Block (SSB), etc. Note that SS, SSB, etc. may also be called reference signals.

[0146] Furthermore, in the wireless communication system 1, the uplink reference signal (UL-RS) may include a sounding reference signal (SRS), a demodulation reference signal (DMRS), etc. The DMRS may also be called a user-specific reference signal (UE-specific Reference Signal).

[0147] (Base Station) Figure 6 shows an example of the configuration of a base station according to one embodiment. The base station 10 includes a control unit 110, a transmitting / receiving unit 120, a transmitting / receiving antenna 130, and a transmission line interface 140. Note that one or more of the control unit 110, the transmitting / receiving unit 120, the transmitting / receiving antenna 130, and the transmission line interface 140 may be provided.

[0148] In this example, the functional blocks of the characteristic parts of this 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 part described below may be omitted.

[0149] The control unit 110 controls the entire base station 10. The control unit 110 can be composed of a controller, control circuit, etc., as described based on common understanding in the technical field related to this disclosure.

[0150] The control unit 110 may control signal generation, scheduling (e.g., resource allocation, mapping), etc. The control unit 110 may also control transmission and reception, measurement, etc., using the transmitting / receiving unit 120, transmitting / receiving antenna 130, and transmission path interface 140. The control unit 110 may generate data to be transmitted as signals, control information, sequences, etc., and transfer them to the transmitting / receiving unit 120. The control unit 110 may also perform call processing of communication channels (setting, releasing, etc.), status management of the base station 10, management of wireless resources, etc.

[0151] The transmitting / receiving 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 transmitting / receiving unit 120 can be composed of a transmitter / receiver, RF circuit, baseband circuit, filter, phase shifter, measurement circuit, transmitting / receiving circuit, etc., as described based on common understanding in the art relating to this disclosure.

[0152] The transmitting / receiving unit 120 may be configured as an integrated transmitting / receiving unit, or it may be composed of a transmitting unit and a receiving unit. The transmitting unit may consist of a transmitting processing unit 1211 and an RF unit 122. The receiving unit may consist of a receiving processing unit 1212, an RF unit 122 and a measuring unit 123.

[0153] The transmitting and receiving antenna 130 can be composed of an antenna described based on common understanding in the art relating to this disclosure, such as an array antenna.

[0154] The transmitting / receiving unit 120 may transmit the downlink channel, synchronization signal, downlink reference signal, etc. The transmitting / receiving unit 120 may also receive the uplink channel, uplink reference signal, etc.

[0155] The transmitting / receiving unit 120 may use digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), or the like to form at least one of the transmitting beam and the receiving beam.

[0156] The transmitting / receiving unit 120 (transmission processing unit 1211) may perform processing on data and control information acquired from the control unit 110, for example, at the Packet Data Convergence Protocol (PDCP) layer, the Radio Link Control (RLC) layer (e.g., RLC retransmission control), and the Medium Access Control (MAC) layer (e.g., HARQ retransmission control), to generate a bit sequence to be transmitted.

[0157] The transmitting / receiving unit 120 (transmission processing unit 1211) may perform transmission processing on the bit sequence to be transmitted, 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, and output a baseband signal.

[0158] The transmitting / receiving unit 120 (RF unit 122) may perform modulation, filtering, amplification, etc., of the baseband signal to the radio frequency band and transmit the signal in the radio frequency band via the transmitting / receiving antenna 130.

[0159] 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 130.

[0160] The transmitting / receiving unit 120 (receiving 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 (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.

[0161] The transmitting / receiving unit 120 (measurement unit 123) may perform measurements related to 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 also measure received power (e.g., Reference Signal Received Power (RSRP)), reception 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.

[0162] The transmission path interface 140 may send and receive signals (backhaul signaling) with devices included in the core network 30 (e.g., network nodes that provide NF), other base stations 10, etc., and may acquire and transmit user data (user plane data), control plane data, etc. for the user terminal 20.

[0163] In this disclosure, the transmitting and receiving units of the base station 10 may consist of at least one of a transmitting / receiving unit 120, a transmitting / receiving antenna 130, and a transmission path interface 140.

[0164] The base station 10 may be separated into three elements: a Radio Unit (RU), a Distributed Unit (DU), and a Central Unit (CU). For example, the RU may implement RF processing (digital beamforming, digital-to-analog conversion, analog beamforming, etc.) and lower-level physical layer functions (precoding, IFFT, FFT, etc.). The DU may implement higher-level physical layer functions (coding to resource element mapping, etc.), MAC layer functions, and RLC layer functions. The CU may implement PDCP layer, Service Data Adaptation Protocol (SDAP) layer, and RRC layer functions.

[0165] In this disclosure, base station 10 may include a single device that implements all the functions of RU, DU, and CU, or it may include multiple devices that each implement some of the functions of RU, DU, and CU and are connected to each other. In this disclosure, base station 10 may be interpreted as RU / DU / CU.

[0166] The transmitting / receiving unit 120 may transmit to the terminal at least one of the following: downlink control information having a code point indicating a Unified Transmission Configuration Indication (TCI) state, and a Unified TCI state activation / deactivation command.

[0167] The control unit 110 may control the unified TCI state to apply based on at least one of the following: the period from the time when downlink control information is transmitted until the unified TCI state corresponding to the code point of the downlink control information is applied to the terminal, and the timing for issuing a unified TCI state activation / deactivation command.

[0168] (User Terminal) Figure 7 shows an example of the configuration of a user terminal according to one embodiment. The user terminal 20 includes a control unit 210, a transmitting / receiving unit 220, and a transmitting / receiving antenna 230. Note that one or more of the control unit 210, the transmitting / receiving unit 220, and the transmitting / receiving antenna 230 may be provided.

[0169] In this example, the functional blocks of the characteristic parts of this embodiment are mainly shown, and it may be assumed that the user terminal 20 also has other functional blocks necessary for wireless communication. Some of the processing of each part described below may be omitted.

[0170] The control unit 210 controls the entire user terminal 20. The control unit 210 can be composed of a controller, control circuit, etc., as described based on common understanding in the technical field related to this disclosure.

[0171] The control unit 210 may control signal generation, mapping, etc. The control unit 210 may also control transmission and reception, measurement, etc., using the transmitting / receiving unit 220 and the transmitting / receiving antenna 230. The control unit 210 may generate data to be transmitted as signals, control information, sequences, etc., and transfer them to the transmitting / receiving unit 220.

[0172] The transmitting / receiving 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 transmitting / receiving unit 220 can be composed of a transmitter / receiver, RF circuit, baseband circuit, filter, phase shifter, measurement circuit, transmitting / receiving circuit, etc., as described based on common understanding in the art relating to this disclosure.

[0173] The transmitting / receiving unit 220 may be configured as an integrated transmitting / receiving unit, or it may be composed of a transmitting unit and a receiving unit. The transmitting unit may consist of a transmitting processing unit 2211 and an RF unit 222. The receiving unit may consist of a receiving processing unit 2212, an RF unit 222 and a measuring unit 223.

[0174] The transmitting and receiving antenna 230 can be composed of an antenna described based on common understanding in the art relating to this disclosure, such as an array antenna.

[0175] The transmitting / receiving unit 220 may receive the downlink channel, synchronization signal, downlink reference signal, etc. The transmitting / receiving unit 220 may also transmit the uplink channel, uplink reference signal, etc.

[0176] The transmitting / receiving unit 220 may use digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), or the like to form at least one of the transmitting beam and the receiving beam.

[0177] The transmitting / receiving unit 220 (transmission processing unit 2211) may perform PDCP layer processing, RLC layer processing (e.g., RLC retransmission control), MAC layer processing (e.g., HARQ retransmission control), etc., on data and control information acquired from the control unit 210 to generate a bit sequence to be transmitted.

[0178] The transmitting / receiving unit 220 (transmission processing unit 2211) may perform transmission processing on the bit sequence to be transmitted, 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, and output a baseband signal.

[0179] Whether or not to apply DFT processing may be based on the transform precoding settings. The transmitting / receiving unit 220 (transmission processing unit 2211) may perform DFT processing as part of the transmission process to transmit a channel (for example, PUSCH) using a DFT-s-OFDM waveform if transform precoding is enabled for that channel, or it may not perform DFT processing as part of the transmission process if transform precoding is not enabled for that channel.

[0180] The transmitting / receiving unit 220 (RF unit 222) may perform modulation, filtering, amplification, etc., of the baseband signal to the radio frequency band and transmit the signal in the radio frequency band via the transmitting / receiving antenna 230.

[0181] 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.

[0182] The transmitting / receiving unit 220 (receiving processing unit 2212) may apply reception processing such as analog-to-digital conversion, FFT processing, IDFT processing (if necessary), filtering, demapping, demodulation, decoding (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.

[0183] The transmitting / receiving unit 220 (measuring unit 223) may perform measurements related to the received signal. For example, the measuring unit 223 may perform RRM measurement, CSI measurement, etc., based on the received signal. The measuring unit 223 may also 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.

[0184] The measurement unit 223 may derive channel measurements for CSI calculation based on channel measurement resources. Channel measurement resources may be, for example, Non Zero Power (NZP) CSI-RS resources. The measurement unit 223 may also derive interference measurements for CSI calculation based on interference measurement resources. Interference measurement resources may be at least one of the following: NZP CSI-RS resources for interference measurement, CSI-Interference Measurement (IM) resources, etc. CSI-IM may also be called CSI-Interference Management (IM), and may be interpreted interchangeably with Zero Power (ZP) CSI-RS. In this disclosure, CSI-RS, NZP CSI-RS, ZP CSI-RS, CSI-IM, CSI-SSB, etc., may be interpreted interchangeably.

[0185] In this disclosure, the transmitting unit and receiving unit of the user terminal 20 may be composed of at least one of a transmitting / receiving unit 220 and a transmitting / receiving antenna 230.

[0186] The transmitting / receiving unit 220 may receive at least one of the following: downlink control information having a code point indicating a Unified Transmission Configuration Indication (TCI) state, and a Unified TCI state activation / deactivation command.

[0187] The control unit 210 may determine the unified TCI state to apply based on at least one of the following: the period from receiving downlink control information until applying the unified TCI state corresponding to the code point of the downlink control information, and the timing at which a unified TCI state activation / deactivation command is instructed or applied.

[0188] If a unified TCI state activation / deactivation command is instructed or applied during the period between receiving downlink control information and applying the unified TCI state corresponding to the code point of the downlink control information, the control unit 210 may control the system to apply the unified TCI state that was activated when the downlink control information was received.

[0189] If, during the period between receiving downlink control information and applying the unified TCI state corresponding to the code point of the downlink control information, the timing for instructing or applying a unified TCI state activation / deactivation command arrives, the control unit 210 may control the system to apply the unified TCI state activated by the unified TCI state activation / deactivation command.

[0190] The control unit 210 does not need to assume that the unified TCI state activated by the unified TCI state activation / deactivation command will be updated during the period from receiving the downlink control information to applying the unified TCI state corresponding to the code point of the downlink control information.

[0191] (Hardware Configuration) The block diagram used in the description of the above embodiment shows functional units. These functional blocks (components) are realized by any combination of at least one of hardware and software. Furthermore, the method of realizing each functional block is not particularly limited. That is, each functional block may be realized using one device that is physically or logically coupled, or it may be realized using two or more physically or logically separated devices that are directly or indirectly connected (for example, using wired or wireless connections). A functional block may also be realized by combining the above one device or the above multiple devices with software.

[0192] Here, functions include, but are not limited to, judgment, decision, determination, calculation, calculation, processing, derivation, investigation, exploration, confirmation, reception, transmission, output, access, resolution, selection, selection, establishment, comparison, assumption, expectation, consideration, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating (mapping), and assigning. For example, a functional block (configuration part) that enables transmission may be called a transmitting unit or transmitter. In all cases, as mentioned above, the method of implementation is not particularly limited.

[0193] For example, a base station, user terminal, etc. in one embodiment of the present disclosure may function as a computer that processes the wireless communication method of the present disclosure. Figure 8 is a diagram showing an example of the hardware configuration of a base station and user terminal according to one embodiment. The base station 10 and user terminal 20 described above may be physically configured as a computer device including a processor 1001, memory 1002, storage 1003, communication device 1004, input device 1005, output device 1006, bus 1007, etc.

[0194] In this disclosure, terms such as apparatus, circuit, device, section, and unit are interchangeable. The hardware configuration of the base station 10 and the user terminal 20 may include one or more of the devices shown in the figure, or it may be configured without some of the devices.

[0195] For example, although only one processor 1001 is shown in the diagram, there may be multiple processors. Furthermore, the processing may be performed by one processor, or it may be performed by two or more processors simultaneously, sequentially, or by other means. Note that the processor 1001 may be implemented using one or more chips.

[0196] 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 the processor 1001 and memory 1002, which allows the processor 1001 to perform calculations and control communication via the communication device 1004, or control at least one of reading and writing data in the memory 1002 and storage 1003.

[0197] The processor 1001 controls the entire computer, for example, by running an operating system. The processor 1001 may be composed of a central processing unit (CPU) that includes interfaces with peripheral devices, control devices, arithmetic units, registers, etc. For example, at least a part of the control unit 110 (210) and the transmitting / receiving unit 120 (220) described above may be implemented by the processor 1001.

[0198] Furthermore, the processor 1001 reads programs (program code), 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 accordingly. The program used is one that causes the computer to execute at least a part of the operations described in the above embodiment. For example, the control unit 110 (210) may be implemented by a control program stored in the memory 1002 and running on the processor 1001, and other functional blocks may be implemented similarly.

[0199] The memory 1002 is a computer-readable recording medium and may consist of at least one of the following: Read Only Memory (ROM), Erasable Programmable ROM (EPROM), Electrically EPROM (EEPROM), Random Access Memory (RAM), or other suitable storage medium. The memory 1002 may also be called a register, cache, or main memory. The memory 1002 can store executable programs (program code), software modules, etc., for carrying out a wireless communication method according to one embodiment of the present disclosure.

[0200] The storage 1003 is a computer-readable recording medium and may consist of at least one of the following: a flexible disk, a floppy disk, a magneto-optical disk (e.g., a Compact Disk (Compact Disc ROM (CD-ROM)), a Digital Use Disk, a Blu-ray (registered trademark) disk), 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. The storage 1003 may also be called an auxiliary storage device.

[0201] The communication device 1004 is hardware (transmitting / receiving device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as a network device, network controller, network card, communication module, etc. The communication device 1004 may be configured to include, for example, a high-frequency switch, duplexer, filter, frequency synthesizer, etc., in order to implement at least one of frequency division duplex (FDD) and time division duplex (TDD). For example, the above-mentioned transmitting / receiving unit 120 (220), transmitting / receiving antenna 130 (230), etc., may be implemented by the communication device 1004. The transmitting / receiving unit 120 (220) may be implemented with physically or logically separated transmitting unit 120a (220a) and receiving unit 120b (220b).

[0202] The input device 1005 is an input device that accepts input from an external source (e.g., a keyboard, mouse, microphone, switch, button, sensor, etc.). The output device 1006 is an output device that outputs to an external source (e.g., a display, speaker, light-emitting diode (LED) lamp, etc.). The input device 1005 and the output device 1006 may be configured as an integrated unit (e.g., a touch panel).

[0203] Furthermore, each device, such as the processor 1001 and memory 1002, is connected by a bus 1007 for communicating information. The bus 1007 may be configured using a single bus, or different buses may be configured for each device.

[0204] 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), and a field programmable gate array (FPGA), and some or all of each functional block may be implemented using such hardware. For example, the processor 1001 may be implemented using at least one of these hardware components.

[0205] Furthermore, devices included in the core network 30 (for example, network nodes that provide NF) may also be implemented using the functional block / hardware configuration described above.

[0206] (Variations) Terms used in this disclosure and terms necessary for understanding this disclosure may be replaced with terms having the same or similar meanings. For example, channel, symbol and signal (signal or signaling) may be used interchangeably. Also, a signal may be a message. A reference signal may be abbreviated as RS and may be called a pilot, pilot signal, etc., depending on the applicable standard. Also, a component carrier (CC) may be called a cell, frequency carrier, carrier frequency, etc.

[0207] A wireless frame may consist of one or more periods (frames) in the time domain. Each of these periods (frames) constituting a wireless frame may be called a subframe. Furthermore, a subframe may consist 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.

[0208] Here, the neurology may be communication parameters applied to at least one of the transmission and reception of a signal or channel. The neurology may be, for example, at least one of the following: subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame configuration, specific filtering processes performed by the transceiver in the frequency domain, and specific windowing processes performed by the transceiver in the time domain.

[0209] A slot may consist of one or more symbols in the time domain (such as Orthogonal Frequency Division Multiplexing (OFDM) symbols or Single Carrier Frequency Division Multiple Access (SC-FDMA) symbols). Alternatively, a slot may be a time unit based on neurology.

[0210] A slot may include multiple minislots. Each minislot may consist of one or more symbols in the time domain. Minislots may also be called subslots. Minislots may consist of fewer symbols than a slot. A PDSCH (or PUSCH) transmitted in a time unit larger than a minislot may be called a PDSCH (PUSCH) mapping type A. A PDSCH (or PUSCH) transmitted using minislots may be called a PDSCH (PUSCH) mapping type B.

[0211] Wireless frames, subframes, slots, minislots, and symbols all represent units of time when transmitting a signal. Wireless frames, subframes, slots, minislots, and symbols may each be referred to by different names. Furthermore, the units of time such as frames, subframes, slots, minislots, and symbols in this disclosure may be interpreted as interchangeable.

[0212] For example, one subframe may be called a TTI, multiple consecutive subframes may be called a TTI, and one slot or one mini-slot may be called a TTI. In other words, at least one of a subframe and a TTI may be a subframe in existing LTE (1 ms), a period shorter than 1 ms (e.g., 1-13 symbols), or a period longer than 1 ms. Note that the unit representing a TTI may be called a slot, mini-slot, etc., instead of a subframe.

[0213] Here, TTI refers to, for example, the smallest time unit for scheduling in wireless communication. For example, in an LTE system, the base station schedules each user terminal to allocate wireless resources (such as the frequency bandwidth and transmission power available to each user terminal) in TTI units. However, the definition of TTI is not limited to this.

[0214] TTI may be a transmission time unit for channel-encoded data packets (transport blocks), code blocks, code words, etc., or it may be a processing unit for scheduling, link adaptation, etc. When a TTI is given, the actual time interval (e.g., number of symbols) in which the transport block, code block, code word, etc. are mapped may be shorter than the TTI.

[0215] Furthermore, if one slot or one mini-slot is referred to as a TTI, then one or more TTIs (i.e., one or more slots or one or more mini-slots) may constitute the minimum time unit for scheduling. In addition, the number of slots (number of mini-slots) that constitute this minimum time unit for scheduling may be controlled.

[0216] A TTI with a time length of 1 ms may be called a normal TTI, long TTI, normal subframe, long subframe, slot, etc. A TTI shorter than a normal TTI may be called a shortened TTI, short TTI, partial or fractional TTI, shortened subframe, short subframe, mini slot, sub slot, slot, etc.

[0217] Furthermore, long TTIs (e.g., normal TTIs, subframes, etc.) may be interpreted as TTIs with a time length exceeding 1 ms, and short TTIs (e.g., shortened TTIs, etc.) may be interpreted as TTIs with a TTI length less than that of a long TTI but 1 ms or more.

[0218] A Resource Block (RB) is a resource allocation unit in the time domain and frequency domain, and in the frequency domain, it may contain one or more consecutive subcarriers. The number of subcarriers in an RB may be the same regardless of the neurology, for example, 12. The number of subcarriers in an RB may be determined based on the neurology.

[0219] Furthermore, an RB may contain one or more symbols in the time domain and may have the length of one slot, one minislot, one subframe, or one TTI. One TTI, one subframe, etc., may each consist of one or more resource blocks.

[0220] One or more RBs may also be called Physical RBs (PRBs), Sub-Carrier Groups (SCGs), Resource Element Groups (REGs), PRB pairs, RB pairs, etc.

[0221] Furthermore, a resource block may consist of one or more resource elements (REs). For example, one RE may be a radio resource area comprising one subcarrier and one symbol.

[0222] A Bandwidth Part (BWP), also known as a partial bandwidth, may represent a subset of consecutive common resource blocks (RBs) for a given neurology in a given carrier. These common RBs may be identified by an index of the RBs relative to a common reference point of the carrier. The PRBs may be defined and numbered within a given BWP.

[0223] A BWP may include UL BWP (BWP for UL) and DL BWP (BWP for DL). One or more BWPs may be configured within a single carrier for a UE.

[0224] At least one of the configured BWPs may be active, and the UE does not need to assume that it will transmit or receive a predetermined signal / channel outside of the active BWP. In this disclosure, terms such as "cell" and "carrier" may be read as "BWP".

[0225] The structures of wireless frames, subframes, slots, minislots, and symbols described above are merely examples. For example, the number of subframes included in a wireless frame, the number of slots per subframe or wireless 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, and the number of symbols, symbol length, and cyclic prefix (CP) length within the TTI can be varied in various ways.

[0226] Furthermore, the information, parameters, etc., described in this disclosure may be expressed using absolute values, relative values ​​from a predetermined value, or corresponding other information. For example, wireless resources may be indicated by a predetermined index.

[0227] The names used for parameters and other elements in this disclosure are not restrictive in any way. Furthermore, mathematical formulas and other elements using these parameters may differ from those expressly disclosed in this disclosure. Various channels (PUCCH, PDCCH, etc.) and information elements can be identified by any suitable name, and therefore, the various names assigned to these various channels and information elements are not restrictive in any way.

[0228] The information, signals, etc. described in this disclosure may be represented using any of the various different techniques. For example, the data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description may be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any combination thereof.

[0229] Furthermore, information, signals, etc., can be output from upper layers to lower layers and from lower layers to upper layers, or to at least one of the two. Information, signals, etc., may also be input and output via multiple network nodes.

[0230] Input and output information and signals may be stored in a specific location (e.g., memory) or managed using a management table. Input and output information and signals may be overwritten, updated, or appended to. Output information and signals may be deleted. Input information and signals may be transmitted to other devices.

[0231] Any information described in this disclosure (e.g., variables, constants, parameters) may be communicated from any first device (e.g., UE / base station) to any second device (e.g., base station / UE) that indicates / specifies (or relates to) the value of such any information, even if not specifically stated in the embodiments described above.

[0232] Information notification is not limited to the embodiments described herein and may be carried out by other means. For example, information notification in this disclosure may be carried out by physical layer signaling (e.g., Downlink Control Information (DCI), Uplink Control Information (UCI)), higher layer signaling (e.g., Radio Resource Control (RRC) signaling, broadcast information (Master Information Block (MIB), System Information Block (SIB)), Medium Access Control (MAC) signaling), other signals, or a combination thereof.

[0233] Physical layer signaling may also be called Layer 1 / Layer 2 (L1 / L2) control information (L1 / L2 control signals), L1 control information (L1 control signals), etc. RRC signaling may also be called RRC messages, for example, RRC Connection Setup messages, RRC Connection Reconfiguration messages, etc. MAC signaling may also be communicated using, for example, MAC Control Elements (CEs).

[0234] Furthermore, notification of the specified information (for example, notification that "X is the case") is not limited to explicit notification, but may also be made implicitly (for example, by not notifying the specified information or by notifying other information).

[0235] The determination may be made by a value represented by one bit (0 or 1), by a boolean value represented as true or false, or by a numerical comparison (for example, a comparison with a predetermined value).

[0236] Software should be broadly interpreted to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, procedures, functions, and so on, whether they are called software, firmware, middleware, microcode, hardware description languages, or by any other name.

[0237] Furthermore, software, instructions, information, etc., may be transmitted and received via a transmission medium. For example, if software is transmitted from a website, server, or other remote source using at least one of wired technology (such as coaxial cable, fiber optic cable, twisted pair, or Digital Subscriber Line (DSL)) and wireless technology (such as infrared or microwave), then at least one of these wired and wireless technologies is included in the definition of a transmission medium.

[0238] The terms “system” and “network” as used in this disclosure may be used interchangeably. “Network” may also mean the equipment included in the network (e.g., base stations).

[0239] In this disclosure, terms such as “precoding,” “precoder,” “weight (precoding weight),” “quasi-co-location (QCL),” “transmission configuration indication state (TCI state),” “spatial relation,” “spatial domain filter,” “transmit power,” “phase rotation,” “antenna port,” “layer,” “number of layers,” “rank,” “resource,” “resource set,” “beam,” “beam width,” “beam angle,” “antenna,” “antenna element,” “panel,” “UE panel,” “transmitting entity,” and “receiving entity” may be used interchangeably.

[0240] In this disclosure, "antenna port" may be interpreted interchangeably with "antenna port for any signal / channel" (e.g., a Demodulation Reference Signal (DMRS) port). In this disclosure, "resource" may be interpreted interchangeably with "resource for any signal / channel" (e.g., a reference signal resource, an SRS resource, etc.). Resources may include time / frequency / code / spatial / power resources. Furthermore, a spatial domain transmit filter may include at least one of a spatial domain transmit filter and a spatial domain receive filter.

[0241] The above group may include, for example, at least one of the following: a spatial relationship group, a code division multiplexing (CDM) group, a reference signal (RS) group, a control resource set (CORESET) group, a PUCCH group, an antenna port group (e.g., a DMRS port group), a layer group, a resource group, a beam group, an antenna group, or a panel group.

[0242] Furthermore, in this disclosure, terms such as beam, SRS Resource Indicator (SRI), CORESET, CORESET pool, PDSCH, PUSCH, Codeword (CW), Transport Block (TB), and RS may be interpreted interchangeably.

[0243] Furthermore, in this disclosure, TCI state, downlink TCI state (DL TCI state), uplink TCI state (UL TCI state), unified TCI state, common TCI state, joint TCI state, etc., may be interpreted interchangeably.

[0244] Furthermore, in this disclosure, terms such as "QCL," "QCL assumption," "QCL relationship," "QCL type information," "QCL property / properties," "specific QCL type (e.g., Type A, Type D) properties," and "specific QCL type (e.g., Type A, Type D)" may be interpreted interchangeably.

[0245] In this disclosure, terms such as index, identifier (ID), indicator, indication, and resource ID may be interpreted interchangeably. In this disclosure, terms such as sequence, list, set, group, cluster, subset may be interpreted interchangeably.

[0246] Furthermore, the spatial relationship information Identifier (ID) (TCI state ID) and spatial relationship information (TCI state) may be interpreted as mutually exclusive. "Spatial relationship information (TCI state)" may be interpreted as mutually exclusive as "a set of spatial relationship information (TCI state)," "one or more pieces of spatial relationship information," etc. TCI state and TCI may be interpreted as mutually exclusive. Spatial relationship information and spatial relationship may be interpreted as mutually exclusive.

[0247] In this disclosure, terms such as “Base Station (BS),” “wireless 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,” and “component carrier” may be used interchangeably. Base stations may also be referred to by terms such as macrocell, small cell, femtocell, and picocell.

[0248] A base station may house one or more (e.g., three) cells. If a base station houses multiple cells, the entire coverage area of ​​the base station may be divided into several smaller areas, each of which may also be provided with communication services by a base station subsystem (e.g., a small indoor base station (Remote Radio Head (RRH))). The terms “cell” or “sector” refer to part or all of the coverage area of ​​at least one of the base station and / or base station subsystems that provide communication services in that coverage.

[0249] In this disclosure, the transmission of information by a base station to a terminal may be interpreted as the base station instructing the terminal to perform a control / operation based on said information.

[0250] In this disclosure, terms such as "Mobile Station (MS)," "user terminal," "User Equipment (UE)," and "terminal" may be used interchangeably.

[0251] A mobile station may also be called 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 appropriate term.

[0252] 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. At least one of the base station and the mobile station may also be a device mounted on a moving object, the moving object itself, etc.

[0253] The term "mobile object" refers to any movable object, regardless of its speed, and naturally includes cases where the mobile object is stationary. Examples of such mobile objects include, but are not limited to, vehicles, transport vehicles, automobiles, motorcycles, bicycles, connected cars, excavators, bulldozers, wheel loaders, dump trucks, forklifts, trains, buses, handcarts, rickshaws, ships and other watercraft, airplanes, rockets, satellites, drones, multicopters, quadcopters, balloons, and items carried on them. Furthermore, such mobile objects may be autonomously driven objects operating based on operational commands.

[0254] The mobile entity may be a vehicle (e.g., a car, an airplane), an unmanned mobile entity (e.g., a drone, an autonomous vehicle), or a robot (manned or unmanned). At least one of the base station and the mobile station may be a device that does not necessarily move during communication operations. For example, at least one of the base station and the mobile station may be an Internet of Things (IoT) device such as a sensor.

[0255] Figure 9 shows an example of a vehicle according to one embodiment. The vehicle 40 includes a drive unit 41, a steering unit 42, an accelerator pedal 43, a brake pedal 44, a shift lever 45, left and right front wheels 46, left and right rear wheels 47, an axle 48, an electronic control unit 49, various sensors (including a current sensor 50, a rotation speed sensor 51, a pneumatic 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.

[0256] The drive unit 41 consists of, for example, at least one of an engine, a motor, or an engine-motor hybrid. 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.

[0257] The electronic control unit 49 consists of a microprocessor 61, memory (ROM, RAM) 62, and communication ports (e.g., input / output (IO) ports) 63. Signals from various sensors 50-58 installed in the vehicle are input to the electronic control unit 49. The electronic control unit 49 may also be called an Electronic Control Unit (ECU).

[0258] Signals from various sensors 50-58 include current signals from current sensor 50 for sensing motor current, rotational speed signals of front wheels 46 / rear wheels 47 acquired by rotational speed sensor 51, air pressure signals of front wheels 46 / rear wheels 47 acquired by air pressure sensor 52, vehicle speed signals acquired by vehicle speed sensor 53, acceleration signals acquired by acceleration sensor 54, accelerator pedal depression amount signals acquired by accelerator pedal sensor 55, brake pedal depression amount signals acquired by brake pedal sensor 56, operation signals of shift lever 45 acquired by shift lever sensor 57, and detection signals acquired by object detection sensor 58 for detecting obstacles, vehicles, pedestrians, etc.

[0259] The information service unit 59 consists of various devices for providing (outputting) various types of information such as driving information, traffic information, and entertainment information, including a car navigation system, audio system, speakers, display, television, and radio, and one or more ECUs that control these devices. The information service unit 59 uses information acquired from external devices via a communication module 60 or the like to provide various types of information / services (for example, multimedia information / multimedia services) to the occupants of the vehicle 40.

[0260] The information service unit 59 may include input devices that accept input from the outside (e.g., keyboard, mouse, microphone, switch, button, sensor, touch panel, etc.) or output devices that perform output to the outside (e.g., display, speaker, LED lamp, touch panel, etc.).

[0261] The driver assistance system unit 64 consists of various devices that provide functions to prevent accidents or reduce the driver's workload, 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 Unit (IMU), Inertial Navigation System (INS)), artificial intelligence (AI) chips, and AI processors, as well as one or more ECUs that control these devices. The driver assistance system unit 64 also transmits and receives various information via the communication module 60 to realize driver assistance functions or autonomous driving functions.

[0262] 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 sends and receives data (information) via the communication port 63 to 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, axle 48, the microprocessor 61 and memory (ROM, RAM) 62 in the electronic control unit 49, and various sensors 50-58 provided in the vehicle 40.

[0263] 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 external devices. For example, it can send and receive various types of information to and from external devices via wireless communication. The communication module 60 may be located either inside or outside the electronic control unit 49. The external device may be, for example, the base station 10 or the user terminal 20 described above. Alternatively, the communication module 60 may be, for example, at least one of the base station 10 and the user terminal 20 (it may function as at least one of the base station 10 and the user terminal 20).

[0264] The communication module 60 may transmit at least one of the following to an external device via wireless communication: signals from the various sensors 50-58 input to the electronic control unit 49, information obtained based on said signals, and information based on input from an external source (user) obtained via the information service unit 59. The electronic control unit 49, the various sensors 50-58, the information service unit 59, etc., may also be called input units that accept input. For example, the PUSCH transmitted by the communication module 60 may include the information based on the above input.

[0265] The communication module 60 receives various information (traffic information, signal information, inter-vehicle information, etc.) transmitted from an external device and displays it on the information service unit 59 installed in the vehicle. The information service unit 59 may also be called an output unit, which outputs information (for example, it outputs information to devices such as displays and speakers based on the PDSCH (or data / information decoded from the PDSCH) received by the communication module 60).

[0266] 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, axle 48, various sensors 50-58, etc., which are provided in the vehicle 40.

[0267] Furthermore, the term "base station" in this disclosure may be interpreted as "user terminal." For example, the various aspects / embodiments of this 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), Vehicle-to-Everything (V2X)). In this case, the user terminal 20 may have the functions of the base station 10 described above. Also, terms such as "uplink" and "downlink" may be interpreted as terms corresponding to terminal-to-terminal communication (for example, "sidelink"). For example, uplink channel, downlink channel, etc., may be interpreted as sidelink channel.

[0268] Similarly, the term "user terminal" in this disclosure may be replaced with "base station." In this case, the base station 10 may be configured to have the same functions as the user terminal 20 described above.

[0269] In this disclosure, operations performed by a base station may, in some cases, be performed by its upper node. In a network including one or more network nodes having base stations, it is clear that various operations performed for communication with terminals may be performed by the base station, one or more network nodes other than the base station (for example, a Mobility Management Entity (MME), a Serving Gateway (S-GW), etc., but not limited to these), or a combination thereof.

[0270] Each aspect / embodiment described in this disclosure may be used individually, in combination, or switched between as needed during execution. Furthermore, the processing procedures, sequences, flowcharts, etc., of each aspect / embodiment described in this disclosure may be rearranged in order, provided they are consistent. For example, the methods described in this disclosure present various step elements using exemplary order and are not limited to the specific order presented.

[0271] Each aspect / embodiment described in this disclosure is 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 (where x is, for example, an integer or decimal)), Future Radio Access (FRA), New-Radio Access Technology (RAT), New Radio (NR), New radio access (NX), Future generation radio access (FX), Global System for Mobile communications (GSM®), CDMA2000, Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi®), IEEE 802.16 (WiMAX®), IEEE 802.20, systems utilizing Ultra-WideBand (UWB), Bluetooth®, or other appropriate wireless communication methods, and next-generation systems extended, modified, created, or defined based thereon may also be applied. Furthermore, multiple systems may be applied in combination (for example, a combination of LTE or LTE-A and 5G).

[0272] In this disclosure, the phrase "based on" does not mean "based solely on" unless otherwise specified. In other words, the phrase "based on" means both "based solely on" and "based at least on."

[0273] Any reference to elements using the designations “first,” “second,” etc., as used in this disclosure does not generally limit the quantity or order of those elements. These designations may be used in this disclosure as a convenient way to distinguish between two or more elements. Accordingly, the references to the first and second elements do not imply that only two elements may be employed or that the first element must precede the second element in any way.

[0274] The term “determining” as used in this disclosure may encompass a wide variety of actions. For example, “determining” may be considered to mean judging, calculating, computing, processing, deriving, investigating, looking up, searching, or inquiring (e.g., searching in tables, databases, or other data structures), ascertaining, etc.

[0275] Furthermore, "judgment (decision)" may be considered as "judging (deciding)" things like receiving (e.g., receiving information), transmitting (e.g., sending information), input, output, accessing (e.g., accessing data in memory).

[0276] Furthermore, “judgment (decision)” may be considered as “judgment (decision)” of resolving, selecting, choosing, establishing, comparing, etc. In other words, “judgment (decision)” may be considered as “judgment (decision)” of some action. In this disclosure, “judgment (decision)” may be interpreted as mutually interchangeable with the actions described above.

[0277] Furthermore, in this disclosure, “determine / determining” may be interpreted as “assume / assuming,” “expect / expecting,” or “consider / considering.” In addition, in this disclosure, “not expecting to do…” may be interpreted as “expecting not to do….”

[0278] In this disclosure, "expect" may be rephrased as "be expected." For example, "expect(s) ..." (where "..." may be expressed as a that clause, an infinitive, etc.) may be rephrased as "be expected ..." or "do (the verb without "to" if "..." is an infinitive)." Similarly, "does not expect ..." may be rephrased as "be not expected ..." or "do not (the verb without "to" if "..." is an infinitive)." Furthermore, "An apparatus A is not expected ..." may be rephrased as "An apparatus B other than apparatus A does not expect ... from apparatus A" (for example, if apparatus A is a UE, apparatus B may be a base station).

[0279] The term "maximum transmit power" as used in this disclosure may mean the maximum transmit power, the nominal UE maximum transmit power, or the rated UE maximum transmit power.

[0280] As used in this disclosure, the terms “connected,” “coupled,” and any variations thereof mean any direct or indirect connection or coupling between two or more elements, and may include one or more intermediate elements between two elements that are “connected” or “coupled” with each other. The coupling or connection between elements may be physical, logical, or a combination thereof. For example, “connection” may be replaced with “access.”

[0281] In this disclosure, when two elements are connected, they can be considered to be "connected" or "coupled" to each other using one or more wires, cables, printed electrical connections, etc., and, in some non-exclusive and non-exclusive examples, electromagnetic energy having wavelengths in the radio frequency domain, microwave domain, and optical (both visible and invisible) domain.

[0282] In this 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 "combine" may be interpreted similarly to "different."

[0283] Where the terms “include,” “including,” and variations thereof are used in this disclosure, these terms are intended to be inclusive, as is the term “comprising.” Furthermore, the term “or” as used in this disclosure is not intended to mean exclusive OR.

[0284] In this disclosure, if articles are added by translation, such as a, an, and the in English, this disclosure may include the fact that the noun following these articles is plural.

[0285] In this disclosure, terms such as "less than or equal to," "less than," "greater than or equal to," "more than," and "equal to" may be interpreted interchangeably. In addition, in this disclosure, terms meaning "good," "bad," "big," "small," "high," "low," "early," "slow," "wide," and "narrow" may be interpreted interchangeably, not limited to the positive, comparative, and superlative degrees. Furthermore, in this disclosure, terms meaning "good," "bad," "big," "small," "high," "low," "early," "slow," "wide," and "narrow" may be interpreted interchangeably, not limited to the positive, comparative, and superlative degrees, by adding "i-th" (where i is any integer) to the expression (for example, "highest" may be interpreted interchangeably as "i-th highest").

[0286] In this disclosure, "of," "for," "regarding," "related to," and "associated with" may be interpreted as being interchangeable.

[0287] In this disclosure, phrases such as "when A, B", "if A, then B", "B upon A", "B in response to A", "B based on A", "B during / while A", "B before A", "B at (the same time as) / on A", "B after A", "B since A", and "B until A" may be interchangeable. Furthermore, A, B, etc., may be replaced with appropriate expressions such as nouns, gerunds, or regular sentences depending on the context. The time difference between A and B may be approximately zero (immediately after or immediately before). Additionally, a time offset may be applied to the time when A occurs. For example, "A" may be interpreted as "before / after the time offset when A occurs". The time offset (e.g., one or more symbols / slots) may be predetermined or determined by the UE based on notified information.

[0288] In this disclosure, timing, time, duration, time instance, any unit of time (e.g., slot, subslot, symbol, subframe), period, occasion, resource, etc., may be interpreted interchangeably.

[0289] Although the invention described herein has been explained in detail above, it will be clear to those skilled in the art that the invention described herein is not limited to the embodiments described herein. The descriptions herein are illustrative and not intended to be restrictive in any way to the invention described herein.

Claims

1. A terminal having a receiving unit that receives at least one of downlink control information having a code point indicating a Unified Transmission Configuration Indication (TCI) state and a Unified TCI state activation / deactivation command, and a control unit that determines the Unified TCI state to apply based on at least one of the period from the time the downlink control information is received until the Unified TCI state corresponding to the code point of the downlink control information is applied, and the timing at which the Unified TCI state activation / deactivation command is instructed or applied.

2. The terminal according to claim 1, wherein if the timing for instructing or applying the Unified TCI state activation / deactivation command occurs during the period from the time the downlink control information is received until the Unified TCI state corresponding to the code point of the downlink control information is applied, the control unit controls the Unified TCI state that was activated at the time the downlink control information was received to apply.

3. The terminal according to claim 1, wherein, during the period from receiving the downlink control information until applying the unified TCI state corresponding to the code point of the downlink control information, if the timing for instructing or applying the unified TCI state activation / deactivation command arrives, the control unit controls to apply the unified TCI state activated by the unified TCI state activation / deactivation command.

4. The terminal according to claim 1, wherein the control unit does not assume that the unified TCI state activated by the unified TCI state activation / deactivation command will be updated during the period from the time the downlink control information is received until the unified TCI state corresponding to the code point of the downlink control information is applied.

5. A wireless communication method for a terminal, comprising the steps of: receiving at least one of downlink control information having a code point indicating a Unified Transmission Configuration Indication (TCI) state and a Unified TCI state activation / deactivation command; and determining a Unified TCI state to apply based on at least one of the following: the period from receiving the downlink control information until applying the Unified TCI state corresponding to the code point of the downlink control information, and the timing at which the Unified TCI state activation / deactivation command is instructed or applied.

6. A base station having: a transmission unit that transmits to a terminal at least one of downlink control information having a code point indicating a Unified Transmission Configuration Indication (TCI) state and a Unified TCI state activation / deactivation command; and a control unit that controls the Unified TCI state to be applied based on at least one of the period from the time the downlink control information is transmitted until the Unified TCI state corresponding to the code point of the downlink control information is applied to the terminal and the timing of issuing the Unified TCI state activation / deactivation command.

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