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WO2025220062A1 - Terminal, procédé de communication sans fil, et station de base - Google Patents

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

Info

Publication number
WO2025220062A1
WO2025220062A1 PCT/JP2024/014934 JP2024014934W WO2025220062A1 WO 2025220062 A1 WO2025220062 A1 WO 2025220062A1 JP 2024014934 W JP2024014934 W JP 2024014934W WO 2025220062 A1 WO2025220062 A1 WO 2025220062A1
Authority
WO
WIPO (PCT)
Prior art keywords
ccs
information
unit
band
base station
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/JP2024/014934
Other languages
English (en)
Japanese (ja)
Inventor
尚哉 芝池
浩樹 原田
祐輝 松村
聡 永田
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
Original Assignee
NTT Docomo Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NTT Docomo Inc filed Critical NTT Docomo Inc
Priority to PCT/JP2024/014934 priority Critical patent/WO2025220062A1/fr
Publication of WO2025220062A1 publication Critical patent/WO2025220062A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/22—Processing or transfer of terminal data, e.g. status or physical capabilities
    • H04W8/24—Transfer of terminal data

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
  • UE capabilities are defined that indicate components defined as "across all CCs" in the UE capability information transmitted by a terminal (user terminal, User Equipment (UE)).
  • UE User Equipment
  • one of the objectives of this disclosure is to provide a terminal, a wireless communication method, and a base station that enable appropriate determination of UE capabilities.
  • a terminal is characterized by having a receiving unit that receives inquiries about the terminal's capabilities, and a control unit that, if the terminal has capabilities that span all Component Carriers (CCs) within a band, controls the transmission of capability information defined as spanning all CCs.
  • CCs Component Carriers
  • One aspect of the present disclosure makes it possible to appropriately determine UE capabilities.
  • FIG. 1 shows an overview of UE Capability Enquiry/Transmission.
  • FIG. 2 is a diagram illustrating an example of a schematic configuration of a wireless communication system according to an embodiment.
  • FIG. 3 is a diagram illustrating an example of the configuration of a base station according to an embodiment.
  • FIG. 4 is a diagram illustrating an example of the configuration of a user terminal according to an embodiment.
  • FIG. 5 is a diagram illustrating an example of the hardware configuration of a base station and a user terminal according to an embodiment.
  • FIG. 6 is a diagram illustrating an example of a vehicle according to an embodiment.
  • UE capabilities 1 is a diagram showing an overview of UE capability inquiry (UECapabilityEnquiry)/transmission.
  • the network (gNB) sends a UE capability inquiry (UECapabilityEnquiry) to the UE before UE capability signaling (transmission/reporting of UE capability information).
  • UECapabilityEnquiry UE capability inquiry
  • the UE transmits UE capability information to the network (gNB).
  • the process of FIG. 1 may be used for transmitting UE capabilities in each embodiment.
  • the inventors therefore came up with a method that enables appropriate determination of UE capabilities.
  • 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
  • feature group UE capability
  • terminal capability capability information
  • UE capability information capability signaling
  • UE capability signaling FG support
  • capability reporting may be interpreted interchangeably.
  • Per FS may also mean “per band and per band combination.”
  • Per FSPC may also mean “per CC and per band combination.”
  • the band/band combination in this disclosure may be a specific band/specific band combination configured/instructed to the UE.
  • a UE may receive an inquiry about terminal capabilities from a NW (base station). If the UE has capabilities across all Component Carriers (CCs) in a band, the UE may control transmission of capability information defined as spanning all CCs. If the NW (base station) receives capability information defined as spanning all CCs from the UE, the NW (base station) may determine that the UE has capabilities across all Component Carriers (CCs) in the band.
  • NW base station
  • CCs Component Carriers
  • First Embodiment Components defined as "across all CCs" in UE capability signaling (UE capability information) defined for each band may be considered (interpreted) as at least one of the following: Interpretation 1-1: Across all CCs in the band. Interpretation 1-2: Across all CCs in a band and all CCs in other bands (e.g., across all CCs configured by the UE). In existing UE capabilities, a rule may be defined that indicates that "across all CCs" is considered to be, for example, "across all CCs configured by the UE.”
  • a UE may transmit UE capability information for each band defined as spanning all CCs to the NW (base station). If the NW (base station) receives UE capability information for each band defined as spanning all CCs, it may determine that the UE has UE capabilities within the range of interpretations 1-1 and 1-2 above (UE capabilities across all CCs in a band, or UE capabilities across all CCs in a band and all CCs in other bands).
  • a new per-XX UE capability CapB with the same component #1 defined as “across all CCs” may be defined.
  • the "specific signaling granularity" may be any one of the following options or a combination of two or more of them: Option 1-1: By band combination. Option 1-2: Per UE. Options 1-3: By band. Options 1-4: By Feature Set (FS). Options 1-5: Feature Set Per Component-carrier (FSPC).
  • Option 2-1 Component #1 of Cap #B overwrites Component #1 of Cap #A. In this case, there may be no special interpretation rules for the components of Cap #A.
  • the UE/base station may determine the support value of component #1 of Cap #B based on the support value of component #1 of Cap #A.
  • the UE/base station may also determine the support value of component #1 of Cap #A based on the support value of component #1 of Cap #B.
  • the support value of component #1 of Cap #A and the support value of component #1 of Cap #B may be the same, or may have a predetermined correspondence.
  • Options 2-3 may be applied when the UE is configured for single-band operation.
  • Aspect 1-1 may be limited to cases where the above “Interpretation 1-1" applies.
  • the scope of application of UE capability information for each band defined across all CCs becomes clear.
  • Second Embodiment Components defined as "across all CCs" in UE capability signaling defined for each Feature Set (FS) may be considered (interpreted) as at least one of the following: Interpretation 2-1: Across all CCs in the bands in the band combination.
  • a rule may be defined that a component defined as "across all CCs" is the same across all bands in the band combination.
  • a UE may transmit UE capability information for each FS defined to span all CCs to the NW (base station). If the NW (base station) receives UE capability information for each FS defined to span all CCs, it may determine that the UE has UE capabilities within the range of interpretations 2-1 and 2-2 above (UE capabilities across all CCs within a band in a band combination, or UE capabilities across all CCs within a band combination).
  • a new UE capability CapB per XX may be defined with the same component #1 defined as "across all CCs.”
  • the "specific signaling granularity" may be any one of the following options or a combination of two or more of them: Option 1-1: By band combination. Option 1-2: Per UE. Options 1-3: By band. Options 1-4: By Feature Set (FS). Options 1-5: Feature Set Per Component-carrier (FSPC).
  • Option 2-1 Component #1 of Cap #B overwrites Component #1 of Cap #A. In this case, there may be no special interpretation rules for the components of Cap #A.
  • the UE/base station may determine the support value of component #1 of Cap #B based on the support value of component #1 of Cap #A.
  • the UE/base station may also determine the support value of component #1 of Cap #A based on the support value of component #1 of Cap #B.
  • the support value of component #1 of Cap #A and the support value of component #1 of Cap #B may be the same, or may have a predetermined correspondence.
  • Options 2-3 may be applied when the UE is configured for single-band operation.
  • Aspect 2-1 may be limited to cases where the above “Interpretation 2-1" applies.
  • the scope of application of UE capability information for each FS which is defined to span all CCs, becomes clear.
  • Third Embodiment Components defined as "across all CCs" in UE capability signaling defined per Feature Set Per Component-carrier (FSPC) may be considered (interpreted) as at least one of the following: Interpretation 3-1: Across all CCs in a band within a band combination. In Interpretation 3-1, a rule may be defined that a component defined as "across all CCs" is the same across all CCs in a band within a band combination. Interpretation 3-2: Across all CCs in a band combination (e.g., across all CCs in all bands in a band combination). In Interpretation 3-2, a rule may be defined that a component defined as "across all CCs" is the same across all CCs in all bands in the band combination.
  • a UE may transmit UE capability information for each FSPC defined to span all CCs to the NW (base station). If the NW (base station) receives UE capability information for each FSPC defined to span all CCs, it may determine that the UE has UE capabilities within the range of interpretations 3-1 and 3-2 above (UE capabilities across all CCs within a band in a band combination, or UE capabilities across all CCs within a band combination).
  • a new UE capability CapB per XX may be defined with the same component #1 defined as "across all CCs”.
  • the "specific signaling granularity" may be any one of the following options or a combination of two or more of them: Option 1-1: By band combination. Option 1-2: Per UE. Options 1-3: By band. Options 1-4: By Feature Set (FS). Options 1-5: Feature Set Per Component-carrier (FSPC).
  • Option 2-1 Component #1 of Cap #B overwrites Component #1 of Cap #A. In this case, there may be no special interpretation rules for the components of Cap #A.
  • the UE/base station may determine the support value of component #1 of Cap #B based on the support value of component #1 of Cap #A.
  • the UE/base station may also determine the support value of component #1 of Cap #A based on the support value of component #1 of Cap #B.
  • the support value of component #1 of Cap #A and the support value of component #1 of Cap #B may be the same, or may have a predetermined correspondence.
  • Options 2-3 may be applied when the UE is configured for single CC operation.
  • Aspect 3-1 may be limited to cases where the above “Interpretation 3-1" applies.
  • the scope of application of UE capability information for each FSPC which is defined to span all CCs, becomes clear.
  • the UE capabilities (UE capability signaling) in the first to third embodiments may be associated with the following functions.
  • the UE capabilities may be related to the following functions: MIMO in Rel. 17/18 (unified TCI, CSI codebook, multi-panel simultaneous transmission for non-codebook PUSCH) - Energy saving of networks in Rel. 18.
  • the new UE capability signaling (e.g., CapB) proposed in aspects 1-1, 2-1, and 3-1 may be specified, for example, in any of the releases Rel. 15 to 19.
  • the new UE capability may be defined in a later release than the UE capability (e.g., Cap#A) that indicates the same component.
  • Different embodiments/aspects/options may correspond to different UE capability signaling. That is, for example, whether interpretation 1-1/2-1/3-1 or interpretation 1-2/2-2/3-2 of the first to third embodiments is applied may differ depending on the corresponding UE capability signaling.
  • Whether interpretation 1-1/2-1/3-1 or interpretation 1-2/2-2/3-2 of the first to third embodiments is applied may be determined based on whether new UE capabilities of aspects 1-1, 2-1, and 3-1 are reported. For example, if new UE capabilities are reported, the operations of interpretation 1-1/2-1/3-1 may be applied, and if new UE capabilities are not reported, the operations of interpretation 1-2/2-2/3-2 may be applied.
  • 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-mentioned embodiments may be performed periodically, semi-persistently (triggered by an instruction from the UE or gNB), or aperiodically (triggered by an instruction from the UE or gNB).
  • the UE may receive information from the NW as at least one of the following QCL rules: ⁇ QCL Type A. ⁇ QCL Type B. ⁇ QCL Type C. ⁇ QCL Type D.
  • the QCL source RS for each QCL type may be at least one of the following several RSs: ⁇ SSB. CSI-RS with/without repetition. ⁇ TRS. DMRS of PDCCH/PDSCH.
  • the information from the NW may be set/instructed in the following manner. Common to multiple UEs or UE specific. - Cell specific or common to multiple cells. - Per UE/per CC/per BWP/per band/per cell/per cell group (CG).
  • 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.
  • notification of any information from the UE may be performed periodically, semi-persistently (triggered by an instruction from the UE or gNB), or aperiodically (triggered by an instruction from the UE or gNB).
  • 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 specific processing/operation/control/assumption/information are set; The specific process/action/control/assumption/information is determined based on relevant higher layer parameters; The specific process/action/control/assumption/information is specified/activated/triggered by MAC CE/DCI/UCI/resource/channel/RS, Reporting or supporting specific UE capabilities indicating (or relating to) the 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.
  • [Appendix 1] a receiver for receiving a terminal capability inquiry; a control unit that controls transmission of capability information defined as spanning all Component Carriers (CCs) in a band when the capability spans all CCs;
  • the control unit controls transmission of the capability information for each Feature Set (FS) defined as spanning all CCs in a band combination, or all CCs in a band combination when the control unit has capabilities spanning all CCs.
  • the terminal according to Supplementary Note 1 or Supplementary Note 2.
  • the control unit controls transmission of the capability information for each Feature Set Per Component-carrier (FSPC) defined as spanning all CCs in a band combination, or all CCs in a band combination if the control unit has capabilities spanning all CCs.
  • FSPC Feature Set Per Component-carrier
  • 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. 2 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 (base station) 3 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 transmitter/receiver unit 120 may also send an inquiry about the terminal's capabilities.
  • control unit 110 may determine that the terminal has capabilities spanning all Component Carriers (CCs) within the band.
  • CCs Component Carriers
  • 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 also perform the processing of the receiver unit described above.
  • the control unit 210 may perform at least one of the processes of the control unit in the above notes.
  • 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 5 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.
  • a slot may include multiple minislots. Each minislot may consist of one or more symbols in the time domain. A minislot may also be called a subslot. A minislot may consist of fewer symbols than a slot.
  • a PDSCH (or PUSCH) transmitted in a time unit larger than a minislot may be called PDSCH (PUSCH) mapping type A.
  • a PDSCH (or PUSCH) transmitted using a minislot may be called PDSCH (PUSCH) mapping type B.
  • 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.
  • the TTI may be a transmission time unit for a channel-encoded data packet (transport block), code block, code word, etc., or may be a processing unit for scheduling, link adaptation, etc.
  • the time interval e.g., number of symbols
  • the time interval to which a transport block, code block, code word, etc. is actually mapped may be shorter than the TTI.
  • 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. 6 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)
  • Databases & Information Systems (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Un terminal selon un aspect de la présente divulgation est caractérisé en ce qu'il comprend : une unité de réception qui reçoit une interrogation concernant la capacité d'un terminal ; et une unité de commande qui, lorsqu'elle possède la capacité sur toutes les porteuses composantes (CC) dans une bande, commande la transmission d'informations de capacité définies comme sur toutes les CC. Un aspect de la présente divulgation permet de déterminer de manière appropriée une capacité d'UE.
PCT/JP2024/014934 2024-04-15 2024-04-15 Terminal, procédé de communication sans fil, et station de base Pending WO2025220062A1 (fr)

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PCT/JP2024/014934 WO2025220062A1 (fr) 2024-04-15 2024-04-15 Terminal, procédé de communication sans fil, et station de base

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