WO2025258043A1 - Terminal, procédé de communication sans fil, et station de base - Google Patents

Terminal, procédé de communication sans fil, et station de base

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Publication number
WO2025258043A1
WO2025258043A1 PCT/JP2024/021597 JP2024021597W WO2025258043A1 WO 2025258043 A1 WO2025258043 A1 WO 2025258043A1 JP 2024021597 W JP2024021597 W JP 2024021597W WO 2025258043 A1 WO2025258043 A1 WO 2025258043A1
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WO
WIPO (PCT)
Prior art keywords
tci
dci
csi
tci state
information
Prior art date
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Application number
PCT/JP2024/021597
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English (en)
Japanese (ja)
Inventor
祐輝 松村
聡 永田
ジン ワン
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NTT Docomo Inc
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NTT Docomo Inc
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Application filed by NTT Docomo Inc filed Critical NTT Docomo Inc
Priority to PCT/JP2024/021597 priority Critical patent/WO2025258043A1/fr
Publication of WO2025258043A1 publication Critical patent/WO2025258043A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/28—Cell structures using beam steering
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H04W72/232—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal the control data signalling from the physical layer, e.g. DCI signalling

Definitions

  • This disclosure relates to terminals, wireless communication methods, and base stations in next-generation mobile communication systems.
  • LTE Long Term Evolution
  • UMTS Universal Mobile Telecommunications System
  • 3GPP Rel. 10-14 LTE-Advanced (3GPP Rel. 10-14) was specified with the aim of achieving even greater capacity and sophistication over LTE (Third Generation Partnership Project (3GPP (registered trademark)) Release (Rel.) 8 and 9).
  • LTE 5th generation mobile communication system
  • 5G+ 5th generation mobile communication system
  • 6G 6th generation mobile communication system
  • NR New Radio
  • UEs user terminals
  • QCL quasi-co-location
  • TCI Transmission Configuration Indication
  • Rel. 17 uses a TCI state (unified TCI state) that can be applied to multiple types of signals (channels/reference signals). Furthermore, from Rel. 18 onwards, unified TCI states will be used in systems that use multiple transmission/reception points (TRPs).
  • TRPs transmission/reception points
  • one of the objectives of this disclosure is to provide a terminal, a wireless communication method, and a base station that can appropriately apply the TCI state.
  • a terminal includes a receiver that receives a list of downlink (DL) or joint Transmission Configuration Indication (TCI) states and receives downlink control information (DCI) that triggers an aperiodic channel state information reference signal (A-CSI-RS), and a controller that, when the terminal has multiple indicated TCI states, determines the indicated TCI state to apply to the A-CSI-RS triggered by the DCI based on the magnitude relationship between the offset between the last symbol of the physical downlink control channel (PDCCH) that transmits the DCI and the start symbol of the resource for the A-CSI-RS triggered by the DCI and a threshold for the A-CSI-RS.
  • DL downlink
  • TCI Transmission Configuration Indication
  • A-CSI-RS aperiodic channel state information reference signal
  • TCI conditions can be applied appropriately.
  • FIG. 1A and 1B are diagrams illustrating an example of a unified/common TCI framework.
  • 2A and 2B are diagrams illustrating an example of a DCI-based TCI status indication.
  • FIG. 3 is a diagram illustrating an example of application of an indicated TCI state according to embodiments of the present disclosure.
  • FIG. 4 is a diagram illustrating an example of a schematic configuration of a wireless communication system according to an embodiment.
  • FIG. 5 is a diagram illustrating an example of the configuration of a base station according to an embodiment.
  • FIG. 6 is a diagram illustrating an example of the configuration of a user terminal according to an embodiment.
  • FIG. 7 is a diagram illustrating an example of the hardware configuration of a base station and a user terminal according to an embodiment.
  • FIG. 8 is a diagram illustrating an example of a vehicle according to an embodiment.
  • TCI transmission configuration indication state
  • TCI states may refer to those that apply to downlink signals/channels.
  • the equivalent of TCI states that apply to uplink signals/channels may be expressed as spatial relations.
  • TCI status is information about the quasi-co-location (QCL) of signals/channels, and may also be called spatial reception parameters, spatial relation information, etc.
  • the TCI status may be set in the UE for each channel or signal.
  • QCL is an index that indicates the statistical properties of a signal/channel. For example, if a signal/channel has a QCL relationship with another signal/channel, it may mean that it can be assumed that at least one of the Doppler shift, Doppler spread, average delay, delay spread, and spatial parameters (e.g., spatial Rx parameters) is the same between these different signals/channels (i.e., they have QCL with respect to at least one of these).
  • the spatial reception parameters may correspond to the reception beam of the UE (e.g., a reception analog beam), and the beam may be identified based on the spatial QCL.
  • the QCL (or at least one element of the QCL) may be interpreted as sQCL (spatial QCL).
  • QCL types QCL types
  • four QCL types A-D may be provided, each with different parameters (or parameter sets) that can be assumed to be identical.
  • the UE's assumption that a Control Resource Set (CORESET), channel, or reference signal has a specific QCL (e.g., QCL type D) relationship with another CORESET, channel, or reference signal may be referred to as a QCL assumption.
  • CORESET Control Resource Set
  • QCL QCL type D
  • the UE may determine at least one of the transmit beam (Tx beam) and receive beam (Rx beam) for a signal/channel based on the TCI condition or QCL assumption of the signal/channel.
  • the TCI state may be, for example, information regarding the QCL between the target channel (in other words, the reference signal (RS) for that channel) and another signal (e.g., another RS).
  • the TCI state may be set (indicated) by higher layer signaling, physical layer signaling, or a combination of these.
  • the physical layer signaling may be, for example, Downlink Control Information (DCI).
  • DCI Downlink Control Information
  • the channel for which the TCI state or spatial relationship is set (specified) may be, for example, at least one of the following: a downlink shared channel (Physical Downlink Shared Channel (PDSCH)), a downlink control channel (Physical Downlink Control Channel (PDCCH)), an uplink shared channel (Physical Uplink Shared Channel (PUSCH)), and an uplink control channel (Physical Uplink Control Channel (PUCCH)).
  • PDSCH Physical Downlink Shared Channel
  • PDCCH Physical Downlink Control Channel
  • PUSCH Physical Uplink Shared Channel
  • PUCCH Physical Uplink Control Channel
  • the RS that has a QCL relationship with the channel may be, for example, at least one of a synchronization signal block (SSB), a channel state information reference signal (CSI-RS), a sounding reference signal (SRS), a tracking CSI-RS (also called a tracking reference signal (TRS)), and a QCL detection reference signal (also called a QRS).
  • SSB synchronization signal block
  • CSI-RS channel state information reference signal
  • SRS sounding reference signal
  • TRS tracking CSI-RS
  • QRS QCL detection reference signal
  • An SSB is a signal block that includes at least one of a Primary Synchronization Signal (PSS), a Secondary Synchronization Signal (SSS), and a Physical Broadcast Channel (PBCH).
  • PSS Primary Synchronization Signal
  • SSS Secondary Synchronization Signal
  • PBCH Physical Broadcast Channel
  • An SSB may also be referred to as an SS/PBCH block.
  • An RS of QCL type X in a TCI state may refer to an RS that has a QCL type X relationship with a certain channel/signal (DMRS), and this RS may be called a QCL source of QCL type X in that TCI state.
  • DMRS channel/signal
  • a UE can configure a list of up to M TCI-State settings in the higher layer parameter PDSCH-Config for decoding of PDSCH according to a detected PDCCH with DCI intended for the UE and a given serving cell, where M depends on the UE capability maxNumberConfiguredTCIstatesPerCC.
  • Each TCI-State includes parameters for setting the QCL relationship between one or two downlink reference signals and the DMRS port of the PDSCH, the DMRS port of the PDCCH, or the CSI-RS port of the CSI-RS resource.
  • the QCL relationship is set by the upper layer parameter qcl-Type1 for the first DL RS and the upper layer parameter qcl-Type2 for the second DL RS (if configured).
  • the QCL type corresponding to each DL RS is given by the upper layer parameter qcl-Type in QCL-Info and takes one of the following values: - 'typeA': ⁇ Doppler shift, Doppler spread, average delay, delay spread ⁇ - 'typeB': ⁇ Doppler shift, Doppler spread ⁇ - 'typeC': ⁇ Doppler shift, average delay ⁇ - 'typeD': ⁇ Spatial Rx parameter ⁇
  • a TCI-State associates one or two DL Reference Signals (RS) with a corresponding QCL type. If an additional physical cell identifier (PCI) is configured for that RS, it is set to the same value for both DL RSs.
  • PCI physical cell identifier
  • the PDSCH may be scheduled in a DCI having a TCI field.
  • the TCI status for the PDSCH is indicated by the TCI field.
  • the TCI field of DCI format 1_1 is 3 bits
  • the TCI field of DCI format 1_2 is a maximum of 3 bits.
  • the UE In RRC connected mode, if the TCI information element in the first DCI (higher layer parameter tci-PresentInDCI) is set to "enabled" for a CORESET that schedules a PDSCH, the UE assumes that the TCI field is present in DCI format 1_1 of the PDCCH transmitted in that CORESET.
  • the TCI information element in the first DCI higher layer parameter tci-PresentInDCI
  • the UE assumes that a TCI field with the DCI field size indicated in the TCI information element in the second DCI is present in DCI format 1_2 of the PDSCH transmitted in that CORESET.
  • PDSCH may be scheduled with a DCI that does not have a TCI field.
  • the DCI format of this DCI may be DCI format 1_0, or DCI format 1_1/1_2 in cases where the TCI information element within the DCI (the upper layer parameter tci-PresentInDCI or tci-PresentInDCI-1-2) is not configured (enabled).
  • the UE When PDSCH is scheduled with a DCI that does not have a TCI field, if the time offset between the reception of the DL DCI (the DCI that schedules the PDSCH (scheduling DCI)) and the corresponding PDSCH (the PDSCH scheduled by this DCI) is equal to or greater than a threshold (timeDurationForQCL), the UE assumes that the TCI state or QCL assumption for the PDSCH is the same as the TCI state or QCL assumption (default TCI state) of the CORESET (e.g., the scheduling DCI).
  • a threshold timeDurationForQCL
  • the TCI state of the PDSCH (default TCI state) may be the TCI state of the lowest CORESET ID in the latest slot in the active DL BWP of that CC (of a particular UL signal). Otherwise, the TCI state of the PDSCH (default TCI state) may be the TCI state of the lowest TCI state ID of the PDSCH in the active DL BWP of the scheduled CC.
  • the above threshold may also be referred to as the time duration for QCL, “timeDurationForQCL”, “Threshold”, “Threshold for offset between a DCI indicating a TCI state and a PDSCH scheduled by the DCI”, “Threshold-Sched-Offset”, “beamSwitchTiming”, schedule offset threshold, scheduling offset threshold, threshold for PDSCH, etc.
  • the above threshold may also be reported by the UE as UE capability (per subcarrier spacing).
  • the UE assumes that the DMRS port of the PDSCH or PDSCH transmission occasion of the serving cell is QCL-co-located (quasi-co-located) with the RS for the QCL parameters associated with the two TCI states corresponding to the lowest code point among the TCI code points including two different TCI states (two default QCL assumption decision rule).
  • the 2 Default TCI Enabled information element indicates that Rel. 16 operation of the 2 default TCI states for the PDSCH is enabled when at least one TCI codepoint is mapped to 2
  • the default TCI states for PDSCH in Rel. 15/16 are specified as follows: default TCI state for single TRP, default TCI state for multi-TRP based on multi-DCI, and default TCI state for multi-TRP based on single DCI.
  • the default TCI states for aperiodic CSI-RS are specified as follows: default TCI state for single TRP, default TCI state for multi-TRP based on multi-DCI, and default TCI state for multi-TRP based on single DCI.
  • the unified TCI framework allows multiple types of channels/RSs (UL/DL) to be controlled by a common framework.
  • the unified TCI framework does not specify TCI states or spatial relationships for each channel as in Rel. 15, but instead specifies a common beam (common TCI state) and applies it to all UL and DL channels, or applies a common beam for UL to all UL channels and a common beam for DL to all DL channels.
  • the UE may assume the same TCI state for UL and DL (joint TCI state, joint TCI pool, joint common TCI pool, joint TCI state set).
  • the UE may assume different TCI states for UL and DL (separate TCI state, separate TCI pool, UL separate TCI pool and DL separate TCI pool, separate common TCI pool, UL common TCI pool and DL common TCI pool).
  • the UL and DL default beams may be aligned using MAC CE-based beam management (MAC CE level beam instructions).
  • the PDSCH default TCI state may be updated to match the default UL beam (spatial relationship).
  • DCI-based beam management may indicate a common beam/unified TCI state from the same TCI pool (joint common TCI pool, joint TCI pool, set) for both UL and DL.
  • X (>1) TCI states may be activated by the MAC CE.
  • the UL/DL DCI may select one from the X active TCI states.
  • the selected TCI state may apply to both UL and DL channels/RS.
  • the TCI pool (set) may be multiple TCI states configured by RRC parameters, or multiple TCI states (active TCI states, active TCI pool, set) activated by the MAC CE among multiple TCI states configured by RRC parameters.
  • Each TCI state may be a QCL type A/D RS.
  • SSB, CSI-RS, or SRS may be configured as the QCL type A/D RS.
  • RRC parameters configure multiple TCI states for both DL and UL.
  • the MAC CE may activate multiple TCI states from the configured multiple TCI states.
  • the DCI may indicate one of the activated multiple TCI states.
  • the DCI may be a UL/DL DCI.
  • the indicated TCI state may apply to at least one (or all) of the UL/DL channels/RS.
  • One DCI may indicate both UL TCI and DL TCI.
  • a single point may represent one TCI state that applies to both UL and DL, or two TCI states that apply to UL and DL, respectively.
  • At least one of the multiple TCI states configured by the RRC parameters and the multiple TCI states activated by the MAC CE may be referred to as a TCI pool (common TCI pool, joint TCI pool, TCI state pool).
  • the multiple TCI states activated by the MAC CE may be referred to as an active TCI pool (active common TCI pool).
  • RRC parameters higher layer parameters that set multiple TCI states
  • configuration information that sets multiple TCI states
  • configuration information that sets multiple TCI states
  • DCI may mean receiving instruction information that indicates one of the multiple TCI states included in the DCI, or simply receiving "instruction information.”
  • the RRC parameters configure multiple TCI states (joint common TCI pools) for both DL and UL.
  • the MAC CE may activate multiple TCI states (active TCI pools) from the configured multiple TCI states. Separate active TCI pools may be configured/activated for each of the UL and DL.
  • the DL DCI or a new DCI format may select (indicate) one or more (e.g., one) TCI states.
  • the selected TCI state may apply to one or more (or all) DL channels/RSs.
  • the DL channels may be PDCCH/PDSCH/CSI-RS.
  • the UE may determine the TCI state for each DL channel/RS using the TCI state behavior (TCI framework) of Rel. 16.
  • the UL DCI or a new DCI format may select (indicate) one or more (e.g., one) TCI states.
  • the selected TCI state may apply to one or more (or all) UL channels/RSs.
  • the UL channels may be PUSCH/SRS/PUCCH. In this way, different DCIs may indicate UL TCI and DL DCI separately.
  • the MAC CE/DCI will support beam activation/indication to a TCI state associated with a different physical cell identifier (PCI). Also, in Rel. 18 NR and later, the MAC CE/DCI may support instructing a serving cell change to a cell with a different PCI.
  • PCI physical cell identifier
  • Unified TCI Framework supports the following modes 1 to 3: ⁇ Mode 1> MAC CE based TCI state indication ⁇ Mode 2> DCI based TCI state indication by DCI format 1_1/1_2 with DL assignment ⁇ Mode 3> DCI based TCI state indication by DCI format 1_1/1_2 without DL assignment
  • 17 TCI State ID receives DCI format 1_1/1_2 providing an indicated TCI state with the Rel. 17 TCI State ID for one CC, or receives DCI format 1_1/1_2 providing an indicated TCI state with the Rel. 17 TCI State ID for all CCs in the same CC list as the CC list configured by simultaneous TCI update list 1 or simultaneous TCI update list 2 (e.g., simultaneousTCI-UpdateList1 or simultaneousTCI-UpdateList2).
  • DCI format 1_1/1_2 may or may not be accompanied by a DL assignment if one is available.
  • DCI format 1_1/1_2 does not carry a DL assignment
  • the UE can assume (verify) the following for that DCI: -
  • the CS-RNTI is used to scramble the CRC for the DCI.
  • the values of the following DCI fields are set as follows: -
  • the redundancy version (RV) field is all '1's.
  • the modulation and coding scheme (MCS) field is all '1's.
  • NDI new data indicator
  • the frequency domain resource assignment (FDRA) field is all '0's for FDRA type 0 or all '1's for FDRA type 1 or all '0's for Dynamic Switch (similar to PDCCH validation for release of DL semi-persistent scheduling (SPS) or UL grant type 2 scheduling).
  • DCI in Mode 2/Mode 3 above may also be referred to as beam instruction DCI.
  • Rel. 15/16 if the UE does not support active BWP changes via DCI, the UE ignores the BWP indicator field. Similar behavior is being considered for the relationship between Rel. 17 TCI state support and TCI field interpretation. If the UE is configured with Rel. 17 TCI state, the TCI field will always be present in DCI format 1_1/1_2; if the UE does not support TCI updates via DCI, the UE will ignore the TCI field.
  • the TCI field in DCI format 1_1 is 0-bit if the higher layer parameter tci-PresentInDCI is not enabled, and 3-bit otherwise. If the BWP indicator field indicates a BWP other than the active BWP, the UE shall follow the following actions: ⁇ Operation> If the higher layer parameter tci-PresentInDCI is not enabled for the CORESET used for the PDCCH carrying that DCI format 1_1, the UE shall assume that tci-PresentInDCI is not enabled for all CORESETs within the indicated BWP; otherwise, the UE shall assume that tci-PresentInDCI is enabled for all CORESETs within the indicated BWP.
  • the TCI field in DCI format 1_2 is 0 bit if the higher layer parameter tci-PresentInDCI-1-2 is not set, otherwise it is 1, 2 or 3 bits determined by the higher layer parameter tci-PresentInDCI-1-2. If the BWP indicator field indicates a BWP other than the active BWP, the UE shall follow the following actions.
  • tci-PresentInDCI-1-2 If the higher layer parameter tci-PresentInDCI-1-2 is not set for the CORESET used for the PDCCH carrying that DCI format 1_2, the UE shall assume that tci-PresentInDCI is not enabled for all CORESETs in the indicated BWP; otherwise, the UE shall assume that tci-PresentInDCI-1-2 for all CORESETs in the indicated BWP is set with the same value as tci-PresentInDCI-1-2 set for the CORESET used for the PDCCH carrying that DCI format 1_2.
  • Figure 2A shows an example of a DCI-based joint DL/UL TCI status indication.
  • a TCI status ID indicating the joint DL/UL TCI status is associated with the value of the TCI field for the joint DL/UL TCI status indication.
  • FIG. 2B shows an example of a DCI-based separate DL/UL TCI status indication.
  • At least one TCI status ID is associated with the value of the TCI field for the separate DL/UL TCI status indication: a TCI status ID indicating a DL-only TCI status and a TCI status ID indicating a UL-only TCI status.
  • TCI field values 000 to 001 are associated with only one TCI status ID for DL
  • TCI field values 010 to 011 are associated with only one TCI status ID for UL
  • TCI field values 100 to 111 are associated with both one TCI status ID for DL and one TCI status ID for UL.
  • the unified/common TCI state may refer to the Rel. 17 TCI state indicated using (Rel. 17) DCI/MAC CE/RRC (indicated Rel. 17 TCI state).
  • TCI state indicates whether or not TCI is mapped to multiple types of signals (channels/RS).
  • unified/common TCI state TCI state applicable to multiple types of signals (channels/RS)
  • TCI state for multiple types of signals channels/RS
  • the indicated Rel. 17 TCI state may be shared with at least one of the UE-specific reception of PDSCH/PDCC (updated using Rel. 17 DCI/MAC CE/RRC), PUSCH of dynamic grant (DCI)/configured grant, and multiple (e.g., all) dedicated PUCCH resources.
  • the TCI state indicated by DCI/MAC CE/RRC may be referred to as the indicated TCI state or the unified TCI state.
  • a TCI state other than the unified TCI state may refer to a Rel. 17 TCI state configured using (Rel. 17) MAC CE/RRC (configured Rel. 17 TCI state).
  • the terms configured Rel. 17 TCI state, configured TCI state, a TCI state other than the unified TCI state, and a TCI state applied to a specific type of signal (channel/RS) may be interpreted interchangeably.
  • the configured Rel. 17 TCI state may not be shared with at least one of the UE-specific reception on the PDSCH/PDCC (updated using Rel. 17 DCI/MAC CE/RRC), the PUSCH of the dynamic grant (DCI)/configured grant, and multiple (e.g., all) dedicated PUCCH resources.
  • the configured Rel. 17 TCI state may be configured by RRC/MAC CE per CORESET/per resource/per resource set, and may not be updated even if the indicated Rel. 17 TCI state (common TCI state) is updated.
  • a CORESET with a common search space (CSS), and a CORESET with a CSS and a UE-specific search space (USS), whether to follow the indicated Rel. 17 TCI state may be configured for each CORESET by an RRC parameter. If the indicated Rel. 17 TCI state is not configured for that CORESET, the configured Rel. 17 TCI state may apply to that CORESET.
  • CCS common search space
  • USS UE-specific search space
  • whether to follow the indicated Rel. 17 TCI state may be configured by an RRC parameter for each channel/resource/resource set. If the indicated Rel. 17 TCI state is not configured for that channel/resource/resource set, the configured Rel. 17 TCI state may apply to that channel/resource/resource set.
  • the indicated TCI state by the MAC CE/DCI may apply to the following channels/RS:
  • CORESET0 follows the TCI state activated by the MAC CE or is QCL'd with SSB.
  • the indicated TCI state For CORESETs with index other than 0 with USS/CSS type 3, the indicated TCI state always applies.
  • the indicated TCI state applies. Otherwise, the configured TCI state for that CORESET applies to that CORESET.
  • the indication TCI state always applies for all UE-dedicated PDSCHs.
  • a non-UE-dedicated PDSCH a PDSCH scheduled by a DCI in the CSS
  • followUnifiedTCIState for the CORESET of the PDCCH that schedules that PDSCH
  • the indicated TCI state may apply. Otherwise, the configured TCI state for that PDSCH applies to that PDSCH.
  • followUnifiedTCIState is not set for a PDSCH, whether a non-UE-dedicated PDSCH follows the indicated TCI state may depend on whether followUnifiedTCIState is set for the CORESET used to schedule that PDSCH.
  • ⁇ CSI-RS> For an A-CSI-RS for CSI acquisition or beam management, if followUnifiedTCIState is set (for CORESET of the PDCCH that triggers that A-CSI-RS), the indicated TCI state applies. For other CSI-RSs, the configured TCI state for that CSI-RS applies.
  • the decision as to whether to apply the default TCI is based on at least the magnitude relationship between the A-CSI-RS triggering DCI and the offset between the first symbol of the A-CSI-RS resource and a threshold value, but the nature of this threshold value has not been clarified.
  • the current specifications specify a threshold for the scheduling offset for PDSCH (timeDurationForQCL) and a threshold for the triggering offset for A-CSI-RS (beamSwitchTiming/beamSwitchTiming-r16), but it is not clear whether these thresholds or other thresholds are used to determine whether the above-mentioned indicated TCI state is applied.
  • the unified TCI state applies to multiple channels/signals (i.e., both PDSCH and A-CSI-RS), unless the threshold for applying the indicated TCI state for A-CSI-RS is clearly defined, the unified TCI state cannot be applied appropriately (e.g., for multi-TRP operation), which may hinder improvements in communication throughput.
  • the inventors therefore came up with a way to solve this problem.
  • a word enclosed in "( )" in a sentence may indicate an explanation of the word immediately preceding it (for example, an explanation of spelling), a paraphrase, a specific example, a supplementary explanation, etc.
  • a word enclosed in "[ ]" in a sentence may be interpreted including the word in the meaning of the entire sentence, or may be interpreted excluding the word in the meaning of the entire sentence (ignoring the word in the meaning of the entire sentence). Note that "( )" and "[ ]” may also be used for purposes/meanings other than those mentioned above.
  • A/B and “at least one of A and B” may be interpreted interchangeably. Also, in this disclosure, “A/B/C” may mean “at least one of A, B, and C.”
  • Radio Resource Control RRC
  • RRC parameters RRC parameters
  • RRC messages upper layer parameters, fields, information elements (IEs), settings, etc.
  • IEs information elements
  • CEs Medium Access Control control elements
  • update commands activation/deactivation commands, etc.
  • higher layer signaling may be, for example, Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information, other messages (e.g., messages from the core network such as positioning protocol (e.g., NR Positioning Protocol A (NRPPa)/LTE Positioning Protocol (LPP)) messages), or a combination of these.
  • RRC Radio Resource Control
  • MAC Medium Access Control
  • LPP LTE Positioning Protocol
  • MAC signaling may use, for example, a MAC Control Element (MAC CE), a MAC Protocol Data Unit (PDU), etc.
  • Broadcast information may be, for example, a Master Information Block (MIB), a System Information Block (SIB), Remaining Minimum System Information (RMSI), Other System Information (OSI), etc.
  • MIB Master Information Block
  • SIB System Information Block
  • RMSI Remaining Minimum System Information
  • OSI Other System Information
  • physical layer signaling may be, for example, Downlink Control Information (DCI), Uplink Control Information (UCI), etc.
  • DCI Downlink Control Information
  • UCI Uplink Control Information
  • multi-TRP multi-TRP system
  • multi-TRP transmission multi-PDSCH
  • multi-PDSCH multi-PDSCH
  • the terms single DCI, single PDCCH, multi-TRP based on a single DCI, single DCI multi-TRP, activating two TCI states on at least one TCI code point, mapping at least one code point in a TCI field to two TCI states, and setting a specific index (e.g., a TRP index, a CORESET pool index, or an index corresponding to a TRP) for a specific channel/CORESET may be interpreted interchangeably.
  • the following may be interpreted interchangeably: single TRP, channel/signal using a single TRP, channel using one TCI state/spatial relationship, multi-TRP not being enabled by RRC/DCI, multiple TCI states/spatial relationships not being enabled by RRC/DCI, a CORESETPoolIndex value of 1 not being set for any CORESET, and no codepoint in the TCI field being mapped to two TCI states.
  • the term "multiple different CORESET pool indices" (PDCCH settings including multiple different CORESET pool indices) being configured, and "multi-TRP based on multi-DCI” and “multi-DCI multi-TRP" may be interpreted interchangeably.
  • single DCI sDCI
  • single PDCCH multi-TRP system based on single DCI
  • sDCI-based MTRP multi-TRP system based on single DCI
  • activation of two TCI states on at least one TCI codepoint may be read interchangeably.
  • the instruction regarding the TCI status to the UE may be performed using at least one of a DCI and a MAC CE.
  • channel, signal, and channel/signal may be interpreted interchangeably.
  • DL channel, DL signal, DL signal/channel, transmission/reception of DL signal/channel, DL reception, and DL transmission may be interpreted interchangeably.
  • applying TCI state/QCL assumptions to each channel/signal/resource may mean applying TCI state/QCL assumptions to transmission and reception of each channel/signal/resource.
  • the first TRP may correspond to the first TCI state (the first TCI state indicated).
  • the second TRP may correspond to the second TCI state (the second TCI state indicated).
  • the nth TRP may correspond to the nth TCI state (the nth TCI state indicated).
  • the first CORESET pool index value (e.g., 0), the first TRP index value (e.g., 1), and the first TCI state (first DL/UL (joint/separate) TCI state) may correspond to each other.
  • the second CORESET pool index value (e.g., 1), the second TRP index value (e.g., 2), and the second TCI state (second DL/UL (joint/separate) TCI state) may correspond to each other.
  • the application of multiple TCI states in transmission and reception using multiple TRPs will be mainly described in terms of a method targeting two TRPs, but the number of TRPs may be three or more (multiple), and each embodiment may be applied to correspond to the number of TRPs.
  • schedule, trigger, and activate may be read interchangeably.
  • action, option, and choice may be read interchangeably.
  • TCI state indicates TCI state
  • unified TCI state indicates joint/DL TCI state
  • indicated joint/DL TCI state may be interpreted interchangeably.
  • the unified/indicated TCI state specified in Rel. 17, the Rel. 17 unified/indicated TCI state, the unified/indicated TCI state that does not support multi-TRP operation, and the unified/indicated TCI state may be interchangeable.
  • the unified/indicated TCI state specified in Rel. 18, the Rel. 18 unified/indicated TCI state, the unified/indicated TCI state that supports multi-TRP operation, and the unified/indicated TCI state may be interchangeable.
  • Unified/Indicated TCI State may be used with or without Rel. X (where X is any number).
  • Rel. X and Rel. X onward may be read interchangeably.
  • the terms "application of unified TCI states defined up to Rel. 17,” “mode related to Rel. 17,” “mode related to Rel. 17 TCI states,” “mode related to Rel. 17 unified TCI states,” “Rel. 17 TCI mode,” “Rel. 17 unified TCI state mode,” “Rel. 17 unified TCI state framework,” “single TRP mode,” and “first mode/setting” may be interpreted interchangeably.
  • the terms application of unified TCI states specified in Rel. 18, mode related to Rel. 18, mode related to Rel. 18 TCI states, mode related to Rel. 18 unified TCI states, Rel. 18 TCI mode, Rel. 18 unified TCI state mode, Rel. 18 unified TCI state framework, multi-TRP mode, and second mode/setting may be read interchangeably.
  • the terms "setting the Rel. 18 unified TCI state,” “setting the Rel. 18 unified TCI state for single DCI-based multi-TRP,” and “setting a DCI field for Rel. 18 (e.g., TCI selection field/TCI state selection field)" may be interpreted interchangeably.
  • the offset between the last symbol of a PDCCH carrying a DCI that schedules a PDSCH (scheduling DCI) and the first symbol of the PDSCH may be referred to as a scheduling offset.
  • the offset between the last symbol of the PDCCH that carries the DCI that triggers the A-CSI-RS (triggering DCI) and the first symbol of the resource of that A-CSI-RS (the aperiodic CSI-RS resource in the aperiodic CSI-RS resource set) may be referred to as the triggering offset.
  • A-CSI-RS, SP-CSI-RS, P-CSI-RS, and CSI-RS may be interpreted interchangeably.
  • xx-rNN (where "xx” is an arbitrary parameter name and "NN” is a number indicating the release number (e.g., 16)) may be read interchangeably.
  • “NN” may also be an arbitrary release number (e.g., 18).
  • Embodiments of the present disclosure may accommodate multi-DCI multi-TRP cases or single-DCI multi-TRP cases.
  • the UE may determine whether to apply the unified TCI state/indicated TCI state based on the relative magnitude of the A-CSI-RS triggering offset and the threshold value for the A-CSI-RS (existing (specified up to Rel. 17)/new) (e.g., beamSwitchTiming/beamSwitchTiming-r16).
  • FIG. 3 is a diagram showing an example of application of an indicated TCI state according to each embodiment of the present disclosure.
  • the UE determines whether to apply an indicated TCI state (first/second indicated TCI state) based on the magnitude relationship between the triggering offset and the threshold (beamSwitchTiming) for A-CSI-RS.
  • the threshold may be an existing threshold specified up to (Rel. 17) (e.g., beamSwitchTiming/beamSwitchTiming-r16), or a new threshold specified (in Rel. 18 or later).
  • the threshold may be based on specific UE capabilities.
  • thresholds for A-CSI-RS may be interpreted as thresholds for PDSCH (e.g., timeDurationForQCL).
  • the following first to third embodiments show examples of applying an indicated TCI state based on the magnitude relationship between the triggering offset and the threshold for A-CSI-RS.
  • the TCI state can be applied appropriately based on the specified threshold.
  • a parameter for the list of DL or joint TCI states (eg, dl-OrJointTCI-StateList) may be configured for the UE.
  • the UE may have multiple (e.g., two) indicated TCI states.
  • the UE may be provided with the aperiodic CSI-RS resource set or the CSI-RS resource in the aperiodic CSI-RS resource set by higher layer configuration.
  • the UE may be configured with a parameter (e.g., followUnifiedTCI-State) indicating that it follows the unified TCI state.
  • a parameter e.g., followUnifiedTCI-State
  • the triggering offset may be greater than or equal to the threshold for A-CSI-RS.
  • a UE may be configured with a PDCCH configuration (e.g., PDCCH-Config) that includes multiple (e.g., two) different values of CORESET pool index (e.g., CORESETPoolIndex) in different CORESET configurations (e.g., ControlResourceSet).
  • PDCCH-Config e.g., PDCCH-Config
  • CORESETPoolIndex e.g., ControlResourceSet
  • the UE may determine that, of the multiple indicated TCI states, a first indicated TCI state corresponds to a TCI state specific to a first value (e.g., 0), and a second indicated TCI state corresponds to a TCI state specific to a second value (e.g., 1).
  • a first indicated TCI state corresponds to a TCI state specific to a first value (e.g., 0)
  • a second indicated TCI state corresponds to a TCI state specific to a second value (e.g., 1).
  • a parameter for the list of DL or joint TCI states (eg, dl-OrJointTCI-StateList) may be configured for the UE.
  • the UE may have multiple (e.g., two) indicated TCI states.
  • the triggering offset may be smaller than the threshold for A-CSI-RS.
  • the UE may determine whether to apply at least one of multiple (e.g., two) indicated TCI states to the A-CSI-RS based on whether other DL signals are present in the same symbol as the A-CSI-RS.
  • multiple e.g., two
  • a parameter for the list of DL or joint TCI states (eg, dl-OrJointTCI-StateList) may be configured for the UE.
  • a UE may be configured with a PDCCH configuration (e.g., PDCCH-Config) that includes multiple (e.g., two) different values of CORESET pool index (e.g., CORESETPoolIndex) in different CORESET configurations (e.g., ControlResourceSet).
  • PDCCH-Config e.g., PDCCH-Config
  • CORESETPoolIndex e.g., ControlResourceSet
  • the UE may have multiple (e.g., two) indicated TCI states.
  • a first indicated TCI state may correspond to an indicated TCI state specific to a first value (e.g., 0), and a second indicated TCI state may correspond to an indicated TCI state specific to a second value (e.g., 1).
  • the triggering offset may be smaller than the threshold for A-CSI-RS.
  • the UE may determine whether to apply at least one of multiple (e.g., two) indicated TCI states to the A-CSI-RS based on whether other DL signals are present in the same symbol as the A-CSI-RS.
  • multiple e.g., two
  • the UE may determine the TCI state to apply to the A-CSI-RS based on at least one of the following: the setting of certain RRC parameters, whether other DL signals are present in the same symbol as the A-CSI-RS, the frequency range, whether certain UE capabilities are supported, and the QCL assumption/TCI state of the DL signal.
  • the base station may indicate the TCI state to be applied to the A-CSI-RS using at least one of the following: specific RRC parameter settings, whether other DL signals are present in the same symbol as the A-CSI-RS, the frequency range, whether specific UE capabilities are supported, and the expected QCL/TCI state of the DL signal.
  • the "other DL signal” may be a DL signal related to single DCI-based multi-TRP operation as specified in the existing (Rel. 17) standard.
  • the "other DL signal/any other DL signal” may be at least one of the following: - PDSCH with an offset equal to or greater than the time threshold for QCL (timeDurationForQCL). - A-CSI-RS scheduled with an offset equal to or greater than the beam switching timing threshold when a specific RRC parameter (e.g., enableBeamSwitchTiming) is not provided and the beam switching timing threshold reported by the UE is one of ⁇ 14, 28, 48 ⁇ *2 max(0, ( ⁇ _CSIRS)-3) .
  • a specific RRC parameter e.g., enableBeamSwitchTiming
  • a specific RRC parameter e.g., enableBeamSwitchTiming
  • the beam switching timing threshold reported by the UE is one of ⁇ 224,336 ⁇ *2 max( 0,( ⁇ _CSIRS)-3) .
  • P-CSI-RS Periodic CSI-RS
  • SP-CSI-RS Semi-persistent CSI-RS
  • the "other DL signals" may be at least one of the following: A PDSCH with an offset equal to or greater than the time threshold for QCL (timeDurationForQCL) that is scheduled by a PDCCH associated with the same CORESET pool index (same as other DL symbols and A-CSI-RS of the same symbol).
  • timeDurationForQCL timeDurationForQCL
  • the beam switching timing threshold when no specific RRC parameter (e.g., enableBeamSwitchTiming) is provided and the beam switching timing threshold reported by the UE, triggered by a PDCCH associated with the same CORESET pool index (same as other DL symbols and A-CSI-RS of the same symbol), is one of ⁇ 14, 28, 48 ⁇ *2 max(0, ( ⁇ _CSIRS)-3) .
  • RRC parameter e.g., enableBeamSwitchTiming
  • - Periodic CSI-RS P-CSI-RS
  • SP-CSI-RS Semi-persistent CSI-RS
  • the "other DL signals" in each embodiment of the present disclosure may have one or more TCI states (indication joint/DL TCI states).
  • the other DL signal may be a DL signal other than a single frequency network (SFN)-PDSCH.
  • SFN single frequency network
  • the other DL signal may be SFN-PDSCH.
  • any information may be notified to the UE [from a network (NW) (e.g., a base station (BS)] (in other words, the UE receives any information from the BS) using physical layer signaling (e.g., DCI), higher layer signaling (e.g., RRC signaling, MAC CE), a specific signal/channel (e.g., PDCCH, PDSCH, reference signal), or a combination thereof.
  • NW network
  • BS base station
  • the MAC CE may be identified by including a new Logical Channel ID (LCID) in the MAC subheader that is not specified in existing standards.
  • LCID Logical Channel ID
  • 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, the format of the DCI, etc.
  • RNTI Radio Network Temporary Identifier
  • CRC Cyclic Redundancy Check
  • notification of any information to the UE in the above-described embodiments may be performed periodically, semi-persistently, or aperiodically.
  • notification of any information from the UE [to the NW] 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.
  • 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
  • the MAC CE may be identified by including a new LCID in the MAC subheader that is not specified in existing standards.
  • the notification may be transmitted using PUCCH or PUSCH.
  • any information notification from the UE in the above-described embodiments may be performed periodically, semi-persistently, or aperiodically.
  • the specific process/operation/control/assumption/information(s) of at least one of the above-described embodiments may be applied (used) when one or more of the following conditions are met: - Upper layer parameters indicating the above specific processing/operation/control/assumption/information are set. The specific processing/actions/controls/assumptions/information are determined based on relevant higher layer parameters. - The above specific processes/actions/controls/assumptions/information are specified/activated/triggered by MAC CE/DCI/UCI/resources/channels/RS. Reporting or supporting specific UE capabilities indicating (or relating to) the above specific processes/actions/controls/assumptions/information. The application of the specific process/action/control/assumption/information is determined based on specific conditions.
  • the above-mentioned specific UE capabilities may indicate support for the above-mentioned specific processes/operations/controls/assumptions/information.
  • the above-mentioned specific UE capabilities may be capabilities that are applied across all frequencies (commonly regardless of frequency), capabilities for each frequency (e.g., one or a combination of cell, band, band combination, BWP, component carrier, etc.), capabilities for each frequency range (e.g., Frequency Range 1 (FR1), FR2, FR3, FR4, FR5, FR2-1, FR2-2), capabilities for each subcarrier spacing (SubCarrier Spacing (SCS)), or capabilities for each Feature Set (FS) or Feature Set Per Component-carrier (FSPC)).
  • FR1 Frequency Range 1
  • FR2 FR2, FR3, FR4, FR5, FR2-1, FR2-2
  • SCS subcarrier Spacing
  • FS Feature Set
  • FSPC Feature Set Per Component-carrier
  • the above-mentioned specific UE capabilities may be capabilities that apply across all duplexing methods (commonly regardless of the duplexing method), or may be capabilities for each duplexing method (e.g., Time Division Duplex (TDD) or Frequency Division Duplex (FDD)).
  • TDD Time Division Duplex
  • FDD Frequency Division Duplex
  • the UE/BS may follow the behavior specified in existing 3GPP releases.
  • a terminal having: a receiving unit that receives a configuration of a list of downlink (DL) or joint Transmission Configuration Indication (TCI) states and receives downlink control information (DCI) that triggers an aperiodic channel state information reference signal (A-CSI-RS); and a control unit that, when the terminal has multiple indication TCI states, determines the indication TCI state to apply to the A-CSI-RS triggered by the DCI based on the magnitude relationship between an offset between a last symbol of a physical downlink control channel (PDCCH) that transmits the DCI and a start symbol of a resource for the A-CSI-RS triggered by the DCI and a threshold for the A-CSI-RS.
  • DL downlink
  • TCI Transmission Configuration Indication
  • A-CSI-RS aperiodic channel state information reference signal
  • control unit determines an indication TCI state to be applied to the A-CSI-RS triggered by the DCI based on whether or not there is another DL signal in the same symbol as the A-CSI-RS triggered by the DCI.
  • control unit 4 The terminal according to any one of Supplementary Notes 1 to 3, wherein, when a PDCCH including a plurality of different values of CORESET pool indexes is configured in different control resource set (CORESET) configurations and the offset is smaller than the threshold, the control unit further determines an indication TCI state to be applied to the A-CSI-RS triggered by the DCI based on whether or not another DL signal is present in the same symbol as the A-CSI-RS triggered by the DCI.
  • CORESET control resource set
  • wireless communication system The configuration of a wireless communication system according to an embodiment of the present disclosure will be described below.
  • communication is performed using any one of the wireless communication methods according to the above embodiments of the present disclosure or a combination thereof.
  • FIG 4 is a diagram showing an example of the schematic configuration of a wireless communication system according to one embodiment.
  • Wireless communication system 1 (which may simply be referred to as system 1) may be a system that achieves communication using Long Term Evolution (LTE) specified by the Third Generation Partnership Project (3GPP), 5th generation mobile communication system New Radio (5G NR), or the like.
  • LTE Long Term Evolution
  • 3GPP Third Generation Partnership Project
  • 5G NR 5th generation mobile communication system New Radio
  • the wireless communication system 1 may also support dual connectivity between multiple Radio Access Technologies (RATs) (Multi-RAT Dual Connectivity (MR-DC)).
  • MR-DC may include dual connectivity between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA)) and NR (E-UTRA-NR Dual Connectivity (EN-DC)), dual connectivity between NR and LTE (NR-E-UTRA Dual Connectivity (NE-DC)), etc.
  • RATs Radio Access Technologies
  • MR-DC may include dual connectivity between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA)) and NR (E-UTRA-NR Dual Connectivity (EN-DC)), dual connectivity between NR and LTE (NR-E-UTRA Dual Connectivity (NE-DC)), etc.
  • E-UTRA Evolved Universal Terrestrial Radio Access
  • EN-DC E-UTRA-NR Dual Connectivity
  • NE-DC NR-E-UTRA Dual Connectivity
  • the LTE (E-UTRA) base station (eNB) is the master node (MN), and the NR base station (gNB) is the secondary node (SN).
  • the NR base station (gNB) is the MN, and the LTE (E-UTRA) base station (eNB) is the SN.
  • the wireless communication system 1 may support dual connectivity between multiple base stations within the same RAT (for example, dual connectivity where both the MN and SN are NR base stations (gNBs) (NR-NR Dual Connectivity (NN-DC))).
  • dual connectivity where both the MN and SN are NR base stations (gNBs) (NR-NR Dual Connectivity (NN-DC))).
  • gNBs NR base stations
  • N-DC Dual Connectivity
  • 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) that are located within the macrocell C1 and form a small cell C2 that is smaller than the macrocell C1.
  • a user terminal 20 may be located within at least one of the cells. The location, number, shape, size, etc. of each cell and user terminal 20 are not limited to the configuration shown in the figure.
  • base stations 11 and 12 are not to be distinguished, they will be collectively referred to as base station 10.
  • the wireless communication system 1 may also utilize multi-input multi-output (MIMO).
  • MIMO multi-input multi-output
  • 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, for example, a supercell) may be made up of multiple [virtual] cells (which may be called, for example, subcells).
  • a supercell may correspond to a cell with a fixed physical range
  • a subcell may correspond to a cell with a quasi-static/dynamically changing physical range.
  • the wireless communication system 1 may be called a cell-free system.
  • the user terminal 20 may be connected to at least one of the multiple base stations 10.
  • the user terminal 20 may use at least one of carrier aggregation (CA) using multiple component carriers (CC) and dual connectivity (DC).
  • CA carrier aggregation
  • CC component carriers
  • DC dual connectivity
  • Each CC may be included in at least one of a first frequency band (Frequency Range 1 (FR1)) and a second frequency band (Frequency Range 2 (FR2)).
  • Macrocell C1 may be included in FR1
  • small cell C2 may be included in FR2.
  • FR1 may be a frequency band below 6 GHz (sub-6 GHz)
  • FR2 may be a frequency band above 24 GHz (above-24 GHz). Note that the frequency bands and definitions of FR1 and FR2 are not limited to these, and for example, FR1 may correspond to a higher frequency band than FR2.
  • the user terminal 20 may communicate using at least one of time division duplex (TDD) and frequency division duplex (FDD) in each CC.
  • TDD time division duplex
  • FDD frequency division duplex
  • Multiple base stations 10 may be connected by wire (e.g., optical fiber compliant with the Common Public Radio Interface (CPRI), X2/Xn interface, etc.) or wirelessly (e.g., NR communication).
  • wire e.g., optical fiber compliant with the Common Public Radio Interface (CPRI), X2/Xn interface, etc.
  • NR communication e.g., NR communication
  • base station 11 which corresponds to the upper station
  • base station 12 which corresponds to the relay station (relay)
  • IAB node Integrated Access Backhaul
  • a base station 10 may be connected to the core network 30 directly or via another base station 10.
  • the core network 30 may include, for example, at least one of an Evolved Packet Core (EPC), a 5G Core Network (5GCN), a Next Generation Core (NGC), etc.
  • EPC Evolved Packet Core
  • 5GCN 5G Core Network
  • NGC Next Generation Core
  • the core network 30 may include network functions (Network Functions (NF)) such as, for example, a User Plane Function (UPF), an Access and Mobility management Function (AMF), a Session Management Function (SMF), a Unified Data Management (UDM), an Application Function (AF), a Data Network (DN), a Location Management Function (LMF), and Operation, Administration and Maintenance (Management) (OAM).
  • NF Network Functions
  • UPF User Plane Function
  • AMF Access and Mobility management Function
  • SMF Session Management Function
  • UDM Unified Data Management
  • AF Application Function
  • DN Data Network
  • LMF Location Management Function
  • OAM Operation, Administration and Maintenance
  • the user terminal 20 may be a terminal that supports at least one of the communication methods such as LTE, LTE-A, and 5G.
  • a wireless access method based on Orthogonal Frequency Division Multiplexing may be used.
  • OFDM Orthogonal Frequency Division Multiplexing
  • CP-OFDM Cyclic Prefix OFDM
  • DFT-s-OFDM Discrete Fourier Transform Spread OFDM
  • OFDMA Orthogonal Frequency Division Multiple Access
  • SC-FDMA Single Carrier Frequency Division Multiple Access
  • the radio access method may also be called a waveform.
  • other radio access methods e.g., other single-carrier transmission methods, other multi-carrier transmission methods
  • the downlink channel may be a downlink shared channel (Physical Downlink Shared Channel (PDSCH)) shared by each user terminal 20, a broadcast channel (Physical Broadcast Channel (PBCH)), a downlink control channel (Physical Downlink Control Channel (PDCCH)), or the like.
  • PDSCH Physical Downlink Shared Channel
  • PBCH Physical Broadcast Channel
  • PDCCH Physical Downlink Control Channel
  • an uplink shared channel (Physical Uplink Shared Channel (PUSCH)) shared by each user terminal 20, an uplink control channel (Physical Uplink Control Channel (PUCCH)), a random access channel (Physical Random Access Channel (PRACH)), etc. may be used as an uplink channel.
  • PUSCH Physical Uplink Shared Channel
  • PUCCH Physical Uplink Control Channel
  • PRACH Physical Random Access Channel
  • SIB System Information Block
  • PDSCH User data, upper layer control information, System Information Block (SIB), etc.
  • SIB System Information Block
  • PUSCH User data, upper layer control information, etc.
  • MIB Master Information Block
  • PBCH Physical Broadcast Channel
  • Lower layer control information may be transmitted via the PDCCH.
  • the lower layer control information may include, for example, Downlink Control Information (DCI) including scheduling information for at least one of the PDSCH and PUSCH.
  • DCI Downlink Control Information
  • the DCI that schedules the PDSCH may be referred to as a DL assignment or DL DCI
  • the DCI that schedules the PUSCH may be referred to as a UL grant or UL DCI.
  • the PDSCH may be interpreted as DL data
  • the PUSCH may be interpreted as UL data.
  • a control resource set (CORESET) and a search space may be used to detect the PDCCH.
  • the CORESET corresponds to the resources to search for DCI.
  • the search space corresponds to the search area and search method for PDCCH candidates.
  • One CORESET may be associated with one or more search spaces. The UE may monitor the CORESET associated with a certain search space based on the search space configuration.
  • One search space may correspond to PDCCH candidates corresponding to one or more aggregation levels.
  • One or more search spaces may be referred to as a search space set. Note that in this disclosure, “search space,” “search space set,” “search space setting,” “search space set setting,” “CORESET,” “CORESET setting,” etc. may be read interchangeably.
  • the PUCCH may transmit uplink control information (UCI) including at least one of channel state information (CSI), delivery confirmation information (which may be called, for example, Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK), ACK/NACK, etc.), and scheduling request (SR).
  • UCI uplink control information
  • CSI channel state information
  • HARQ-ACK Hybrid Automatic Repeat reQuest ACKnowledgement
  • ACK/NACK ACK/NACK, etc.
  • SR scheduling request
  • the PRACH may transmit a random access preamble for establishing a connection with a cell.
  • downlink, uplink, etc. may be expressed without adding the word "link.”
  • various channels may be expressed without adding "Physical" to the beginning.
  • a synchronization signal (SS), a downlink reference signal (DL-RS), etc. may be transmitted.
  • a cell-specific reference signal (CRS), a channel state information reference signal (CSI-RS), a demodulation reference signal (DMRS), a positioning reference signal (PRS), a phase tracking reference signal (PTRS), etc. may be transmitted.
  • the synchronization signal may be, for example, at least one of a primary synchronization signal (PSS) and a secondary synchronization signal (SSS).
  • a signal block including an SS (PSS, SSS) and a PBCH (and a DMRS for the PBCH) may be referred to as an SS/PBCH block, an SS block (SSB), etc.
  • SS, SSB, etc. may also be referred to as a reference signal.
  • a sounding reference signal (SRS), a demodulation reference signal (DMRS), etc. may be transmitted as an uplink reference signal (UL-RS).
  • DMRS may also be called a user equipment-specific reference signal (UE-specific Reference Signal).
  • the base station 5 is a diagram illustrating an example of the configuration of a base station according to an embodiment.
  • the base station 10 includes a control unit 110, a transceiver unit 120, a transceiver antenna 130, and a transmission line interface 140. Note that the base station may include one or more of each of the control unit 110, the transceiver unit 120, the transceiver antenna 130, and the transmission line interface 140.
  • this example mainly shows the functional blocks that characterize the present embodiment, and it may be assumed that the base station 10 also has other functional blocks necessary for wireless communication. Some of the processing of each unit described below may be omitted.
  • the control unit 110 controls the entire base station 10.
  • the control unit 110 can be composed of a controller, a control circuit, etc., as described based on common understanding in the technical field to which this disclosure pertains.
  • 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 using the transceiver unit 120, the transceiver antenna 130, and the transmission path interface 140, measurements, etc.
  • the control unit 110 may generate data, control information, sequences, etc. to be transmitted as signals, and transfer them to the transceiver unit 120.
  • the control unit 110 may also perform call processing of communication channels (setting up, releasing, etc.), status management of the base station 10, management of radio resources, etc.
  • the transceiver unit 120 may include a baseband unit 121, a radio frequency (RF) unit 122, and a measurement unit 123.
  • the baseband unit 121 may include a transmission processing unit 1211 and a reception processing unit 1212.
  • the transceiver unit 120 may be composed of a transmitter/receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transceiver circuit, etc., which are described based on common understanding in the technical field to which this disclosure relates.
  • the transceiver unit 120 may be configured as an integrated transceiver unit, or may be composed of a transmitter unit and a receiver unit.
  • the transmitter unit may be composed of a transmission processing unit 1211 and an RF unit 122.
  • the receiver unit may be composed of a reception processing unit 1212, an RF unit 122, and a measurement unit 123.
  • the transmitting and receiving antenna 130 can be composed of an antenna described based on common understanding in the technical field to which this disclosure pertains, such as an array antenna.
  • the transceiver 120 may transmit the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc.
  • the transceiver 120 may also receive the above-mentioned uplink channel, uplink reference signal, etc.
  • the transceiver unit 120 may form at least one of the transmit beam and the receive beam using digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), etc.
  • digital beamforming e.g., precoding
  • analog beamforming e.g., phase rotation
  • the transceiver 120 may perform Packet Data Convergence Protocol (PDCP) layer processing, Radio Link Control (RLC) layer processing (e.g., RLC retransmission control), Medium Access Control (MAC) layer processing (e.g., HARQ retransmission control), etc. on data, control information, etc. obtained from the control unit 110, and generate a bit string to be transmitted.
  • PDCP Packet Data Convergence Protocol
  • RLC Radio Link Control
  • MAC Medium Access Control
  • HARQ retransmission control e.g., HARQ retransmission control
  • the transmitter/receiver unit 120 may perform transmission processing such as channel coding (which may include error correction coding), modulation, mapping, filtering, Discrete Fourier Transform (DFT) processing (if necessary), Inverse Fast Fourier Transform (IFFT) processing, precoding, and digital-to-analog conversion on the bit string to be transmitted, and output a baseband signal.
  • transmission processing such as channel coding (which may include error correction coding), modulation, mapping, filtering, Discrete Fourier Transform (DFT) processing (if necessary), Inverse Fast Fourier Transform (IFFT) processing, precoding, and digital-to-analog conversion on the bit string to be transmitted, and output a baseband signal.
  • channel coding which may include error correction coding
  • DFT Discrete Fourier Transform
  • IFFT Inverse Fast Fourier Transform
  • the transceiver unit 120 may perform modulation, filtering, amplification, etc. on the baseband signal to a radio frequency band, and transmit the radio frequency band signal via the transceiver antenna 130.
  • the transceiver unit 120 may perform amplification, filtering, demodulation to a baseband signal, etc. on the radio frequency band signal received by the transceiver antenna 130.
  • the transceiver unit 120 may apply reception processing such as analog-to-digital conversion, Fast Fourier Transform (FFT) processing, Inverse Discrete Fourier Transform (IDFT) processing (if necessary), filtering, demapping, demodulation, decoding (which may include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal, thereby acquiring user data, etc.
  • reception processing such as analog-to-digital conversion, Fast Fourier Transform (FFT) processing, Inverse Discrete Fourier Transform (IDFT) processing (if necessary), filtering, demapping, demodulation, decoding (which may include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal, thereby acquiring user data, etc.
  • FFT Fast Fourier Transform
  • IDFT Inverse Discrete Fourier Transform
  • the transceiver 120 may perform measurements on the received signal.
  • the measurement unit 123 may perform Radio Resource Management (RRM) measurements, Channel State Information (CSI) measurements, etc. based on the received signal.
  • the measurement unit 123 may measure received power (e.g., Reference Signal Received Power (RSRP)), received quality (e.g., Reference Signal Received Quality (RSRQ), Signal to Interference plus Noise Ratio (SINR), Signal to Noise Ratio (SNR)), signal strength (e.g., Received Signal Strength Indicator (RSSI)), propagation path information (e.g., CSI), etc.
  • RSRP Reference Signal Received Power
  • RSSI Received Signal Strength Indicator
  • the measurement results may be output to the control unit 110.
  • the transmission path interface 140 may transmit and receive signals (backhaul signaling) between devices included in the core network 30 (e.g., network nodes providing 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.
  • devices included in the core network 30 e.g., network nodes providing NF
  • other base stations 10, etc. may acquire and transmit user data (user plane data), control plane data, etc. for the user terminal 20.
  • the transmitter and receiver of the base station 10 in this disclosure may be configured by at least one of the transmitter/receiver 120, the transmitter/receiver antenna 130, and the transmission path interface 140.
  • the base station 10 may be separated into three elements: a radio unit (RU), a distributed unit (DU), and a central unit (CU).
  • the RU may perform RF processing (digital beamforming, digital-to-analog conversion, analog beamforming, etc.) and lower-level physical layer functions (precoding, IFFT, FFT, etc.).
  • the DU may perform higher-level physical layer functions (encoding to resource element mapping, etc.), MAC layer functions, and RLC layer functions.
  • the CU may perform PDCP layer, Service Data Adaptation Protocol (SDAP) layer, and RRC layer functions.
  • SDAP Service Data Adaptation Protocol
  • the base station 10 may include a single device that implements all of the functions of the RU, DU, and CU, or may include multiple devices that each implement some of the functions of the RU, DU, and CU and are connected to each other.
  • the base station 10 may be interchangeably referred to as the RU/DU/CU.
  • the transceiver unit 120 may transmit a list of downlink (DL) or joint Transmission Configuration Indication (TCI) states and may transmit downlink control information (DCI) that triggers an aperiodic channel state information reference signal (A-CSI-RS).
  • DCI downlink control information
  • A-CSI-RS aperiodic channel state information reference signal
  • the control unit 110 may indicate the TCI state to apply to the A-CSI-RS triggered by the DCI using the magnitude relationship between the offset between the last symbol of the physical downlink control channel (PDCCH) that transmits the DCI and the start symbol of the resource for the A-CSI-RS triggered by the DCI and a threshold for the A-CSI-RS.
  • PDCCH physical downlink control channel
  • the user terminal 20 is a diagram showing an example of the configuration of a user terminal according to an embodiment.
  • the user terminal 20 includes a control unit 210, a transceiver unit 220, and a transceiver antenna 230. Note that the user terminal 20 may include one or more of each of the control unit 210, the transceiver unit 220, and the transceiver antenna 230.
  • this example mainly shows the functional blocks that characterize the present embodiment, and the user terminal 20 may also have other functional blocks necessary for wireless communication. Some of the processing of each unit described below may be omitted.
  • 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 to which this disclosure pertains.
  • the control unit 210 may control signal generation, mapping, etc.
  • the control unit 210 may also control transmission and reception, measurement, etc. using the transmission and reception unit 220 and the transmission and reception antenna 230.
  • the control unit 210 may generate data, control information, sequences, etc. to be transmitted as signals and transfer them to the transmission and reception unit 220.
  • the transceiver unit 220 may include a baseband unit 221, an RF unit 222, and a measurement unit 223.
  • the baseband unit 221 may include a transmission processing unit 2211 and a reception processing unit 2212.
  • the transceiver unit 220 may be composed of a transmitter/receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transceiver circuit, etc., which are described based on common understanding in the technical field related to this disclosure.
  • the transceiver unit 220 may be configured as an integrated transceiver unit, or may be composed of a transmitter unit and a receiver unit.
  • the transmitter unit may be composed of a transmission processing unit 2211 and an RF unit 222.
  • the receiver unit may be composed of a reception processing unit 2212, an RF unit 222, and a measurement unit 223.
  • the transmitting and receiving antenna 230 can be configured as an antenna described based on common understanding in the technical field to which this disclosure pertains, such as an array antenna.
  • the transceiver unit 220 may receive the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc.
  • the transceiver unit 220 may also transmit the above-mentioned uplink channel, uplink reference signal, etc.
  • the transceiver unit 220 may form at least one of the transmit beam and the receive beam using digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), etc.
  • digital beamforming e.g., precoding
  • analog beamforming e.g., phase rotation
  • the transceiver unit 220 may perform PDCP layer processing, RLC layer processing (e.g., RLC retransmission control), MAC layer processing (e.g., HARQ retransmission control), etc. on data, control information, etc. obtained from the control unit 210, and generate a bit string to be transmitted.
  • RLC layer processing e.g., RLC retransmission control
  • MAC layer processing e.g., HARQ retransmission control
  • the transceiver unit 220 may perform transmission processing such as channel coding (which may include error correction coding), modulation, mapping, filtering, DFT processing (if necessary), IFFT processing, precoding, and digital-to-analog conversion on the bit string to be transmitted, and output a baseband signal.
  • transmission processing such as channel coding (which may include error correction coding), modulation, mapping, filtering, DFT processing (if necessary), IFFT processing, precoding, and digital-to-analog conversion on the bit string to be transmitted, and output a baseband signal.
  • Whether or not to apply DFT processing may be based on the settings for transform precoding. If transform precoding is enabled for a certain channel (e.g., PUSCH), the transceiver unit 220 (transmission processing unit 2211) may perform DFT processing as the transmission processing to transmit the channel using a DFT-s-OFDM waveform; if not, it may not be necessary to perform DFT processing as the transmission processing.
  • transform precoding is enabled for a certain channel (e.g., PUSCH)
  • the transceiver unit 220 transmission processing unit 2211
  • the transceiver unit 220 may perform modulation, filtering, amplification, etc. on the baseband signal to a radio frequency band, and transmit the radio frequency band signal via the transceiver antenna 230.
  • the transceiver unit 220 may perform amplification, filtering, demodulation to a baseband signal, etc. on the radio frequency band signal received by the transceiver antenna 230.
  • the transceiver unit 220 may apply reception processing such as analog-to-digital conversion, FFT processing, IDFT processing (if necessary), filtering, demapping, demodulation, decoding (which may include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal to acquire user data, etc.
  • reception processing such as analog-to-digital conversion, FFT processing, IDFT processing (if necessary), filtering, demapping, demodulation, decoding (which may include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing to the acquired baseband signal to acquire user data, etc.
  • the transceiver unit 220 may perform measurements on the received signal. For example, the measurement unit 223 may perform RRM measurements, CSI measurements, etc. based on the received signal.
  • the measurement unit 223 may measure received power (e.g., RSRP), received quality (e.g., RSRQ, SINR, SNR), signal strength (e.g., RSSI), propagation path information (e.g., CSI), etc.
  • the measurement results may be output to the control unit 210.
  • the measurement unit 223 may derive channel measurements for CSI calculation based on channel measurement resources.
  • the channel measurement resources may be, for example, non-zero power (NZP) CSI-RS resources.
  • the measurement unit 223 may also derive interference measurements for CSI calculation based on interference measurement resources.
  • the interference measurement resources may be at least one of NZP CSI-RS resources for interference measurement, CSI-Interference Measurement (IM) resources, etc.
  • CSI-IM may also be referred to as CSI-Interference Management (IM) or may be interchangeably read as Zero Power (ZP) CSI-RS.
  • CSI-RS, NZP CSI-RS, ZP CSI-RS, CSI-IM, CSI-SSB, etc. may be interchangeable.
  • the transmitter and receiver of the user terminal 20 in this disclosure may be configured by at least one of the transmitter/receiver 220 and the transmitter/receiver antenna 230.
  • the transceiver unit 220 may receive a list of downlink (DL) or joint Transmission Configuration Indication (TCI) states and may receive downlink control information (DCI) that triggers an aperiodic channel state information reference signal (A-CSI-RS).
  • DCI downlink control information
  • A-CSI-RS aperiodic channel state information reference signal
  • the control unit 210 may determine the indicated TCI state to apply to the A-CSI-RS triggered by the DCI based on the magnitude relationship between the offset between the last symbol of the physical downlink control channel (PDCCH) that transmits the DCI and the start symbol of the resource for the A-CSI-RS triggered by the DCI and a threshold for the A-CSI-RS.
  • PDCCH physical downlink control channel
  • the control unit 210 may determine that a first indication TCI state among the multiple indication TCI states is a TCI state corresponding to a first value of the CORESET pool index, and that a second indication TCI state among the multiple indication TCI states is a TCI state corresponding to a second value of the CORESET pool index.
  • control unit 210 may further determine the indicated TCI state to apply to the A-CSI-RS triggered by the DCI based on whether or not another DL signal exists in the same symbol as the A-CSI-RS triggered by the DCI.
  • control unit 210 may further determine the indication TCI state to apply to the A-CSI-RS triggered by the DCI based on whether or not another DL signal exists in the same symbol as the A-CSI-RS triggered by the DCI.
  • each functional block may be realized using a single device that is physically or logically coupled, or may be realized using two or more physically or logically separated devices that are directly or indirectly connected (e.g., wired, wireless, etc.) and these multiple devices.
  • the functional block may also be realized by combining software with the single device or multiple devices.
  • functions include, but are not limited to, judgment, determination, judgment, calculation, computation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, resolution, selection, election, establishment, comparison, assumption, expectation, deeming, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, and assignment.
  • a functional block (component) that performs transmission functions may be called a transmitting unit, transmitter, etc.
  • transmitting unit transmitter
  • a base station, a user terminal, etc. in one embodiment of the present disclosure may function as a computer that performs processing of the wireless communication method of the present disclosure.
  • Figure 7 is a diagram showing an example of the hardware configuration of a base station and a user terminal according to one embodiment.
  • the above-mentioned base station 10 and user terminal 20 may be physically configured as a computer device including a processor 1001, memory 1002, storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, etc.
  • the hardware configuration of the base station 10 and user terminal 20 may be configured to include one or more of the devices shown in the figures, or may be configured to exclude some of the devices.
  • processor 1001 may be implemented by one or more chips.
  • the functions of the base station 10 and the user terminal 20 are realized, for example, by loading specific software (programs) onto hardware such as the processor 1001 and memory 1002, causing the processor 1001 to perform calculations, control communications via the communication device 1004, and control at least one of reading and writing data from and to the memory 1002 and storage 1003.
  • the processor 1001 for example, runs an operating system to control the entire computer.
  • the processor 1001 may be configured as a central processing unit (CPU) that includes an interface with peripheral devices, a control unit, an arithmetic unit, registers, etc.
  • CPU central processing unit
  • control unit e.g., arithmetic unit
  • registers e.g., arithmetic unit
  • at least a portion of the above-mentioned control unit 110 (210), transceiver unit 120 (220), etc. may be realized by the processor 1001.
  • 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 in accordance with these.
  • the programs used are those that cause a computer to execute at least some of the operations described in the above-described embodiments.
  • the control unit 110 (210) may be implemented by a control program stored in the memory 1002 and running on the processor 1001, and similar implementations may be used for other functional blocks.
  • Memory 1002 is a computer-readable recording medium and may be composed of, for example, at least one of Read Only Memory (ROM), Erasable Programmable ROM (EPROM), Electrically EPROM (EEPROM), Random Access Memory (RAM), or other suitable storage medium.
  • ROM Read Only Memory
  • EPROM Erasable Programmable ROM
  • EEPROM Electrically EPROM
  • RAM Random Access Memory
  • Memory 1002 may also be referred to as a register, cache, main memory, etc.
  • Memory 1002 can store executable programs (program code), software modules, etc. for implementing a wireless communication method according to one embodiment of the present disclosure.
  • Storage 1003 is a computer-readable recording medium and may be composed of at least one of a flexible disk, a floppy disk, a magneto-optical disk (e.g., a compact disc (Compact Disc ROM (CD-ROM)), a digital versatile disc, a Blu-ray disc), a removable disk, a hard disk drive, a smart card, a flash memory device (e.g., a card, a stick, a key drive), a magnetic stripe, a database, a server, or other suitable storage medium.
  • Storage 1003 may also be referred to as an auxiliary storage device.
  • 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, or communication module.
  • the communication device 1004 may be configured to include high-frequency switches, duplexers, filters, frequency synthesizers, etc. to implement at least one of frequency division duplex (FDD) and time division duplex (TDD).
  • FDD frequency division duplex
  • TDD time division duplex
  • the above-mentioned transmitter/receiver unit 120 (220), transmitter/receiver antenna 130 (230), etc. may be implemented by the communication device 1004.
  • the transmitter/receiver unit 120 (220) may be implemented as a transmitter unit 120a (220a) and a receiver unit 120b (220b) that are physically or logically separated.
  • the input device 1005 is an input device (e.g., a keyboard, mouse, microphone, switch, button, sensor, etc.) that accepts input from the outside.
  • the output device 1006 is an output device (e.g., a display, speaker, Light Emitting Diode (LED) lamp, etc.) that outputs to the outside. Note that the input device 1005 and the output device 1006 may be integrated into one device (e.g., a touch panel).
  • 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 may be configured using different buses between each device.
  • the base station 10 and user terminal 20 may be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), or a field programmable gate array (FPGA), and some or all of the functional blocks may be realized using this hardware.
  • the processor 1001 may be implemented using at least one of these pieces of hardware.
  • devices included in the core network 30 may also be realized using the above-mentioned functional block/hardware configuration.
  • a channel, a symbol, and a signal may be interchangeable.
  • a signal may also be a message.
  • a reference signal may be abbreviated as RS, and may also be called a pilot, pilot signal, etc. depending on the applicable standard.
  • a component carrier may also be called a cell, frequency carrier, carrier frequency, etc.
  • a radio frame may be composed of one or more periods (frames) in the time domain.
  • Each of the one or more periods (frames) constituting a radio frame may be called a subframe.
  • a subframe may be composed of one or more slots in the time domain.
  • a subframe may have a fixed time length (e.g., 1 ms) that is independent of numerology.
  • numerology may be a communication parameter applied to at least one of the transmission and reception of a signal or channel.
  • Numerology may indicate, 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 structure, specific filtering processing performed by the transmitter/receiver in the frequency domain, and specific windowing processing performed by the transmitter/receiver in the time domain.
  • SCS subcarrier spacing
  • TTI transmission time interval
  • radio frame structure specific filtering processing performed by the transmitter/receiver in the frequency domain
  • specific windowing processing performed by the transmitter/receiver in the time domain specific windowing processing performed by the transmitter/receiver in the time domain.
  • 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).
  • a slot may also be a time unit based on numerology.
  • Radio frame, subframe, slot, minislot, and symbol all represent time units for transmitting signals. Radio frame, subframe, slot, minislot, and symbol may each be referred to by a different name. Note that the time units used in this disclosure, such as frame, subframe, slot, minislot, and symbol, may be interchangeable.
  • one subframe may be referred to as a TTI, or multiple consecutive subframes may be referred to as a TTI, or one slot or one minislot may be referred to as a TTI.
  • at least one of a subframe and a TTI may be a subframe (1 ms) as in existing LTE, or may be a period shorter than 1 ms (e.g., 1-13 symbols), or may be a period longer than 1 ms.
  • the unit representing a TTI may be called a slot, minislot, etc. instead of a subframe.
  • TTI refers to, for example, the smallest time unit for scheduling in wireless communication.
  • a base station performs scheduling to allocate radio resources (such as the frequency bandwidth and transmission power that can be used by each user terminal) to each user terminal in TTI units.
  • radio resources such as the frequency bandwidth and transmission power that can be used by each user terminal
  • TTI is not limited to this.
  • one slot or one minislot is called a TTI
  • one or more TTIs may be the smallest time unit for scheduling.
  • the number of slots (minislots) that make up the smallest time unit for scheduling may be controlled.
  • a TTI with a time length of 1 ms may be called a regular TTI (TTI in 3GPP Rel. 8-12), normal TTI, long TTI, regular subframe, normal subframe, long subframe, slot, etc.
  • a TTI shorter than a regular TTI may be called a shortened TTI, short TTI, partial TTI (partial or fractional TTI), shortened subframe, short subframe, minislot, subslot, slot, etc.
  • a long TTI (e.g., a normal TTI, subframe, etc.) may be interpreted as a TTI having a time length of more than 1 ms
  • a short TTI e.g., a shortened TTI, etc.
  • a resource block is a resource allocation unit in the time domain and frequency domain, and may include one or more consecutive subcarriers in the frequency domain.
  • the number of subcarriers included in an RB may be the same regardless of numerology, and may be, for example, 12.
  • the number of subcarriers included in an RB may also be determined based on numerology.
  • an RB may include one or more symbols in the time domain and may be one slot, one minislot, one subframe, or one TTI in length.
  • One TTI, one subframe, etc. may each be composed of one or more resource blocks.
  • one or more RBs may also be referred to as a physical resource block (PRB), a sub-carrier group (SCG), a resource element group (REG), a PRB pair, an RB pair, etc.
  • PRB physical resource block
  • SCG sub-carrier group
  • REG resource element group
  • PRB pair an RB pair, etc.
  • a resource block may be composed of one or more resource elements (REs).
  • REs resource elements
  • one RE may be a radio resource region of one subcarrier and one symbol.
  • a Bandwidth Part (which may also be referred to as a partial bandwidth) may represent a subset of contiguous common resource blocks (RBs) for a given numerology on a given carrier.
  • the common RBs may be identified by the index of the RB relative to the common reference point of the carrier.
  • PRBs may be defined in a BWP and numbered within that BWP.
  • BWPs may include UL BWPs (BWPs for UL) and DL BWPs (BWPs for DL).
  • BWPs for UL
  • BWPs for DL DL BWPs
  • One or more BWPs may be configured for a UE within one carrier.
  • At least one of the configured BWPs may be active, and the UE may not expect to transmit or receive a given signal/channel outside the active BWP.
  • BWP bitmap
  • the structures of the radio frames, subframes, slots, minislots, and symbols described above are merely examples.
  • the number of subframes included in a radio frame, the number of slots per subframe or radio frame, the number of minislots included in a slot, the number of symbols and RBs included in a slot or minislot, the number of subcarriers included in an RB, as well as the number of symbols in a TTI, symbol length, and cyclic prefix (CP) length can be changed in various ways.
  • radio resources may be indicated by a predetermined index.
  • the names used for parameters and the like in this disclosure are not limiting in any way. Furthermore, the mathematical formulas and the like using these parameters may differ from those explicitly disclosed in this disclosure.
  • the various channels (PUCCH, PDCCH, etc.) and information elements may be identified by any suitable names, and therefore the various names assigned to these various channels and information elements are not limiting in any way.
  • the information, signals, etc. described in this disclosure may be represented using any of a variety of different technologies.
  • data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any combination thereof.
  • Information, signals, etc. may be output from a higher layer to a lower layer and/or from a lower layer to a higher layer. Information, signals, etc. may be input/output via multiple network nodes.
  • Input and output information, signals, etc. may be stored in a specific location (for example, memory) or may be managed using a management table. Input and output information, signals, etc. may be overwritten, updated, or added to. Output information, signals, etc. may be deleted. Input information, signals, etc. may be sent to another device.
  • any first device e.g., UE/base station
  • any second device e.g., base station/UE
  • the notification of information is not limited to the aspects/embodiments described in this disclosure, and may be performed using other methods.
  • the notification of information in this disclosure may be performed using 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)), etc.), Medium Access Control (MAC) signaling), other signals, or a combination of these.
  • DCI Downlink Control Information
  • UCI Uplink Control Information
  • RRC Radio Resource Control
  • MIB Master Information Block
  • SIB System Information Block
  • MAC Medium Access Control
  • L1/L2 control signal Layer 1/Layer 2
  • L1 control information L1 control signal
  • RRC signaling may also be referred to as RRC messages, such as RRC Connection Setup messages or RRC Connection Reconfiguration messages.
  • MAC signaling may also be notified using, for example, MAC Control Elements (CEs).
  • CEs MAC Control Elements
  • notification of specified information is not limited to explicit notification, but may also be done implicitly (e.g., by not notifying the specified information or by notifying other information).
  • the determination may be made based on a value represented by a single bit (0 or 1), a Boolean value represented as true or false, or a comparison of numerical values (for example, a comparison with a predetermined value).
  • Software shall be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures, functions, etc., whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise.
  • software, instructions, information, etc. may be transmitted and received via a transmission medium.
  • a transmission medium such as coaxial cable, fiber optic cable, twisted pair, or Digital Subscriber Line (DSL)
  • wired technology such as coaxial cable, fiber optic cable, twisted pair, or Digital Subscriber Line (DSL)
  • wireless technology such as infrared or microwave
  • Network may refer to devices included in the network (e.g., base stations).
  • precoding "precoding weight”
  • QCL Quality of Co-Location
  • TCI state Transmission Configuration Indication state
  • spatialal relation "spatial domain filter,” “transmit power,” “phase rotation,” “antenna port,” “layer,” “number of layers,” “rank,” “resource,” “resource set,” “beam,” “beam width,” “beam angle,” “antenna,” “antenna element,” “panel,” “UE panel,” “transmitting entity,” “receiving entity,” etc.
  • the term "antenna port” may be interchangeably read as an antenna port for any signal/channel (e.g., a demodulation reference signal (DMRS) port).
  • the term “resource” may be interchangeably read as a resource for any signal/channel (e.g., a reference signal resource, an SRS resource, etc.).
  • the resource may include time/frequency/code/space/power resources.
  • the spatial domain transmit filter may include at least one of a spatial domain transmission filter and a spatial domain reception filter.
  • the above groups may include, for example, at least one of a spatial relationship group, a Code Division Multiplexing (CDM) group, a Reference Signal (RS) group, a Control Resource Set (CORESET) group, a PUCCH group, an antenna port group (e.g., a DMRS port group), a layer group, a resource group, a beam group, an antenna group, a panel group, etc.
  • CDM Code Division Multiplexing
  • RS Reference Signal
  • CORESET Control Resource Set
  • beam SRS Resource Indicator (SRI), CORESET, CORESET pool, PDSCH, PUSCH, codeword (CW), transport block (TB), RS, etc. may be read as interchangeable terms.
  • TCI state downlink TCI state
  • DL TCI state downlink TCI state
  • UL TCI state uplink TCI state
  • unified TCI state common TCI state
  • joint TCI state may be interpreted interchangeably.
  • index identifier
  • indicator indication
  • resource ID identifier
  • sequence list, set, group, cluster, and subset
  • TCI state ID may be interchangeable.
  • TCI state ID may be interchangeable as “set of spatial relationship information (TCI state)", “one or more pieces of spatial relationship information”, etc.
  • TCI state and TCI may be interchangeable.
  • Spatial relationship information and spatial relationship may be interchangeable.
  • Base Station BS
  • Radio Base Station Fire Base Station
  • NodeB 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”
  • Base stations may also be referred to by terms such as macrocell, small cell, femtocell, and picocell.
  • a base station can accommodate one or more (e.g., three) cells.
  • a base station accommodates multiple cells, the entire coverage area of the base station can be divided into multiple smaller areas, and each smaller area can also be provided with communication services by a base station subsystem (e.g., a small indoor base station (Remote Radio Head (RRH))).
  • RRH Remote Radio Head
  • the terms "cell” or “sector” refer to part or all of the coverage area of at least one of the base station and base station subsystems that provide communication services within this coverage area.
  • a base station transmitting information to a terminal may be interpreted as the base station instructing the terminal to control/operate based on that information.
  • MS Mobile Station
  • UE User Equipment
  • a mobile station may also be referred to as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable terminology.
  • At least one of the base station and the mobile station may be referred to as a transmitting device, a receiving device, a wireless communication device, etc.
  • at least one of the base station and the mobile station may be a device mounted on a moving object, the moving object itself, etc.
  • the mobile body in question refers to an object that can move at any speed, and of course also includes cases where the mobile body is stationary.
  • Examples of the mobile body in question 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 objects mounted on these.
  • the mobile body in question may also be a mobile body that moves autonomously based on operation commands.
  • the moving object may be a vehicle (e.g., a car, an airplane, etc.), an unmanned moving object (e.g., a drone, a self-driving car, etc.), or a robot (manned or unmanned).
  • a vehicle e.g., a car, an airplane, etc.
  • an unmanned moving object e.g., a drone, a self-driving car, etc.
  • a robot manned or unmanned.
  • at least one of the base station and the mobile station may also include devices that do not necessarily move during communication operations.
  • at least one of the base station and the mobile station may be an Internet of Things (IoT) device such as a sensor.
  • IoT Internet of Things
  • FIG. 8 is a diagram showing 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, an RPM sensor 51, an air pressure sensor 52, a vehicle speed sensor 53, an acceleration sensor 54, an accelerator pedal sensor 55, a brake pedal sensor 56, a shift lever sensor 57, and an object detection sensor 58), an information service unit 59, and a communication module 60.
  • various sensors including a current sensor 50, an RPM sensor 51, an air pressure sensor 52, a vehicle speed sensor 53, an acceleration sensor 54, an accelerator pedal sensor 55, a brake pedal sensor 56, a shift lever sensor 57, and an object detection sensor 58
  • an information service unit 59 including a communication module 60.
  • the drive unit 41 is composed of, for example, at least one of an engine, a motor, or a hybrid of an engine and a motor.
  • 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.
  • the electronic control unit 49 is composed of a microprocessor 61, memory (ROM, RAM) 62, and a communication port (e.g., an input/output (IO) port) 63. Signals are input to the electronic control unit 49 from various sensors 50-58 provided in the vehicle.
  • the electronic control unit 49 may also be called an Electronic Control Unit (ECU).
  • ECU Electronic Control Unit
  • Signals from the various sensors 50-58 include a current signal from a current sensor 50 that senses the motor current, a rotation speed signal for the front wheels 46/rear wheels 47 obtained by a rotation speed sensor 51, an air pressure signal for the front wheels 46/rear wheels 47 obtained by an air pressure sensor 52, a vehicle speed signal obtained by a vehicle speed sensor 53, an acceleration signal obtained by an acceleration sensor 54, a depression amount signal for the accelerator pedal 43 obtained by an accelerator pedal sensor 55, a depression amount signal for the brake pedal 44 obtained by a brake pedal sensor 56, an operation signal for the shift lever 45 obtained by a shift lever sensor 57, and a detection signal for detecting obstacles, vehicles, pedestrians, etc. obtained by an object detection sensor 58.
  • the information service unit 59 is composed of various devices, such as a car navigation system, audio system, speakers, displays, televisions, and radios, that provide (output) various information such as driving information, traffic information, and entertainment information, as well as one or more ECUs that control these devices.
  • the information service unit 59 uses information obtained from external devices via the communication module 60, etc., to provide various information/services (e.g., multimedia information/multimedia services) to the occupants of the vehicle 40.
  • various information/services e.g., multimedia information/multimedia services
  • the information service unit 59 may include input devices (e.g., keyboards, mice, microphones, switches, buttons, sensors, touch panels, etc.) that accept input from the outside, and may also include output devices (e.g., displays, speakers, LED lamps, touch panels, etc.) that output to the outside.
  • input devices e.g., keyboards, mice, microphones, switches, buttons, sensors, touch panels, etc.
  • output devices e.g., displays, speakers, LED lamps, touch panels, etc.
  • the driving assistance system unit 64 is composed of various devices that provide functions to prevent accidents and reduce the driver's driving burden, such as millimeter-wave radar, Light Detection and Ranging (LiDAR), cameras, positioning locators (e.g., Global Navigation Satellite System (GNSS)), map information (e.g., High Definition (HD) maps, Autonomous Vehicle (AV) maps), gyro systems (e.g., Inertial Measurement Unit (IMU) and Inertial Navigation System (INS)), artificial intelligence (AI) chips, and AI processors, as well as one or more ECUs that control these devices.
  • the driving assistance system unit 64 also transmits and receives various information via the communication module 60 to realize driving assistance or autonomous driving functions.
  • the communication module 60 can communicate with the microprocessor 61 and components of the vehicle 40 via the communication port 63.
  • the communication module 60 transmits and receives data (information) via the communication port 63 between the drive unit 41, steering unit 42, accelerator pedal 43, brake pedal 44, shift lever 45, left and right front wheels 46, left and right rear wheels 47, axles 48, the microprocessor 61 and memory (ROM, RAM) 62 in the electronic control unit 49, and the various sensors 50-58, all of which are provided on the vehicle 40.
  • 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 sends and receives various 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 user terminal 20 described above.
  • the communication module 60 may also be, for example, at least one of the base station 10 and user terminal 20 described above (or may function as at least one of the base station 10 and user terminal 20).
  • the communications module 60 may transmit at least one of the following to an external device via wireless communication: signals from the various sensors 50-58 described above input to the electronic control unit 49; information obtained based on these signals; and information based on input from the outside (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 referred to as input units that accept input.
  • the PUSCH transmitted by the communications module 60 may include information based on the above input.
  • the communications module 60 receives various information (traffic information, traffic signal information, vehicle-to-vehicle information, etc.) transmitted from external devices 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 that outputs information (for example, outputs information to a device such as a display or speaker based on the PDSCH received by the communications module 60 (or data/information decoded from the PDSCH)).
  • the communication module 60 stores various information received from external devices in memory 62 that can be used by the microprocessor 61. Based on the information stored in memory 62, the microprocessor 61 may control the drive unit 41, steering unit 42, accelerator pedal 43, brake pedal 44, shift lever 45, left and right front wheels 46, left and right rear wheels 47, axles 48, various sensors 50-58, and other components provided on the vehicle 40.
  • the base station in the present disclosure may be read as a user terminal.
  • the aspects/embodiments of the present disclosure may be applied to a configuration in which communication between a base station and a user terminal is replaced with communication between multiple user terminals (which may be called, for example, Device-to-Device (D2D) or Vehicle-to-Everything (V2X)).
  • the user terminal 20 may be configured to have the functions possessed by the base station 10 described above.
  • terms such as “uplink” and “downlink” may be read as terms corresponding to communication between terminals (for example, "sidelink”).
  • terms such as uplink channel and downlink channel may be read as sidelink channel.
  • the term "user terminal” in this disclosure may be interpreted as “base station.”
  • the base station 10 may be configured to have the functions possessed by the user terminal 20 described above.
  • operations described as being performed by a base station may in some cases also be performed by its upper node.
  • 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 (such as, but not limited to, a Mobility Management Entity (MME) or a Serving-Gateway (S-GW)), or a combination thereof.
  • MME Mobility Management Entity
  • S-GW Serving-Gateway
  • each aspect/embodiment described in this disclosure may be used alone, in combination, or switched between depending on the implementation. Furthermore, the processing procedures, sequences, flowcharts, etc. of each aspect/embodiment described in this disclosure may be rearranged as long as they are consistent. For example, the methods described in this disclosure present various step elements in an exemplary order, and are not limited to the specific order presented.
  • LTE Long Term Evolution
  • LTE-A LTE-Advanced
  • LTE-B LTE-Beyond
  • SUPER 3G IMT-Advanced
  • 4th generation mobile communication system 4th generation mobile communication system
  • 5G 5th generation mobile communication system
  • 6G 6th generation mobile communication system
  • xG x is, for example, an integer or decimal number
  • Future Radio Access FX
  • GSM Global System for Mobile communications
  • CDMA2000 Code Division Multiple Access
  • UMB Ultra Mobile Broadband
  • IEEE 802.11 Wi-Fi
  • IEEE 802.16 WiMAX (registered trademark)
  • IEEE 802.20 Ultra-WideBand (UWB), Bluetooth (registered trademark), or other appropriate wireless communication methods, as
  • the phrase “based on” does not mean “based only on,” unless expressly stated otherwise. In other words, the phrase “based on” means both “based only on” and “based at least on.”
  • any reference to an element using a designation such as "first,” “second,” etc. does not generally limit the quantity or order of those elements. These designations may be used in this disclosure as a convenient method of distinguishing between two or more elements. Thus, a reference to a first and a second element does not imply that only two elements may be employed or that the first element must in some way precede the second element.
  • determining may encompass a wide variety of actions. For example, “determining” may be considered to be judging, calculating, computing, processing, deriving, investigating, looking up, search, inquiry (e.g., searching in a table, database, or other data structure), ascertaining, etc.
  • determination may be considered to be “determining” receiving (e.g., receiving information), transmitting (e.g., sending information), input, output, accessing (e.g., accessing data in memory), etc.
  • judgment (decision) may be considered to mean “judging (deciding)” resolving, selecting, choosing, establishing, comparing, etc.
  • judgment (decision) may be considered to mean “judging (deciding)” some kind of action.
  • judgment (decision) may be read interchangeably with the above-mentioned actions.
  • expect may be interchangeably read as “be expected.”
  • "expect(s)" (“" may be expressed, for example, as a that clause, a to-infinitive, etc.) may be interchangeably read as “be expected" or “does... (if the above "! is a to-infinitive, a verb with "to").”
  • "does not expect" may be interchangeably read as "be not expected" or "does not...
  • apparatus A is not expected
  • apparatus B may be interchangeably read as "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).
  • maximum transmit power used in this disclosure may refer to the maximum value of transmit power, the nominal UE maximum transmit power, or the rated UE maximum transmit power.
  • connection means any direct or indirect connection or coupling between two or more elements, and may include the presence of one or more intermediate elements between two elements that are “connected” or “coupled” to each other.
  • the coupling or connection between elements may be physical, logical, or a combination thereof. For example, "connected” may be read as "access.”
  • a and B are different may mean “A and B are different from each other.” Note that this term may also mean “A and B are each different from C.” Terms such as “separate” and “combined” may also be interpreted in the same way as “different.”
  • expressions 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.
  • a and B may be replaced with other appropriate expressions, such as nouns, gerunds, and regular sentences, depending on the context.
  • the time difference between A and B may be nearly zero (immediately after or immediately before).
  • a time offset may also be applied to the time at which A occurs.
  • “A” may be interpreted interchangeably as “before/after the time offset at which A occurs.”
  • the time offset (e.g., one or more symbols/slots) may be predefined or may be determined by the UE based on signaled information.
  • timing time, duration, time instance, any time unit (e.g., slot, subslot, symbol, subframe), period, occasion, and resource may be interpreted interchangeably.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Un terminal selon un mode de réalisation de la présente divulgation comprend : une unité de réception qui reçoit le réglage d'une liste d'états d'indication de configuration de transmission (TCI) de liaison descendante (DL) ou de liaison descendante conjointe et qui reçoit des informations de commande de liaison descendante (DCI) qui déclenchent un signal de référence d'informations d'état de canal apériodique (A-CSI-RS) ; et une unité de commande qui, lorsque le terminal a une pluralité d'états TCI d'indication, détermine un état TCI d'indication à appliquer à l'A-CSI-RS déclenché par les DCI, sur la base de la relation d'amplitude entre un décalage entre le dernier symbole d'un canal de commande de liaison descendante physique (PDCCH) qui transmet les DCI et le symbole de départ d'une ressource de l'A-CSI-RS déclenchée par les DCI, et d'une valeur seuil pour l'A-CSI-RS. Ce mode de réalisation de la divulgation permet d'appliquer des états TCI de manière appropriée.
PCT/JP2024/021597 2024-06-14 2024-06-14 Terminal, procédé de communication sans fil, et station de base Pending WO2025258043A1 (fr)

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230209538A1 (en) * 2021-12-29 2023-06-29 Comcast Cable Communications, Llc Unified Transmission Configuration Indicator State Indication

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230209538A1 (en) * 2021-12-29 2023-06-29 Comcast Cable Communications, Llc Unified Transmission Configuration Indicator State Indication

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"3rd Generation Partnership Project; Technical Specification Group Radio Access Network; NR; Physical layer procedures for data (Release 18)", 3GPP STANDARD; TECHNICAL SPECIFICATION; 3GPP TS 38.214, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. V18.2.0, 29 March 2024 (2024-03-29), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, pages 1 - 293, XP052598066 *

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