WO2024042954A1 - Terminal, procédé de communication sans fil et station de base - Google Patents

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

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Publication number
WO2024042954A1
WO2024042954A1 PCT/JP2023/026958 JP2023026958W WO2024042954A1 WO 2024042954 A1 WO2024042954 A1 WO 2024042954A1 JP 2023026958 W JP2023026958 W JP 2023026958W WO 2024042954 A1 WO2024042954 A1 WO 2024042954A1
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pdsch
tci
pdcch
sfn
information
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PCT/JP2023/026958
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Japanese (ja)
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祐輝 松村
聡 永田
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株式会社Ｎｔｔドコモ
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    • 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
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management

Definitions

  • the present disclosure relates to a terminal, a wireless communication method, and a base station in a next-generation mobile communication system.
  • LTE Long Term Evolution
  • 3GPP Rel. 10-14 is a specification for the purpose of further increasing capacity and sophistication of LTE (Third Generation Partnership Project (3GPP (registered trademark)) Release (Rel. 8, 9). was made into
  • LTE Long Term Evolution
  • 5G 5th generation mobile communication system
  • 5G+ plus
  • NR New Radio
  • E-UTRA Evolved Universal Terrestrial Radio Access
  • E-UTRAN Evolved Universal Terrestrial Radio Access Network
  • one of the purposes of the present disclosure is to provide a terminal, a wireless communication method, and a base station that appropriately control operations related to TCI state/QCL assumption.
  • a terminal has configuration information regarding a single frequency network (SFN) physical downlink control channel (PDCCH) set to a specific scheme, and configuration information regarding an SFN physical downlink shared channel (PDSCH). If not set, and the period from the downlink control information that schedules the PDSCH to the PDSCH is smaller than a specific threshold, Transmission Configuration Indication (The control unit includes a control unit that determines a TCI state to be applied to the PDSCH based on a TCI state, and a reception unit that receives the PDSCH.
  • SFN single frequency network
  • PDSCH physical downlink control channel
  • operations related to TCI state/QCL assumption can be appropriately controlled.
  • FIGS. 4A to 4C are diagrams illustrating an example of a NW pre-compensation scheme.
  • FIG. 5 is a diagram illustrating an example of application of TCI states.
  • FIG. 6 is a diagram illustrating an example of application of TCI states according to an embodiment of the present disclosure.
  • FIG. 7 is a diagram illustrating an example of application of TCI states according to an embodiment variation of the present disclosure.
  • FIG. 8 is a diagram illustrating an example of a schematic configuration of a wireless communication system according to an embodiment.
  • FIG. 9 is a diagram illustrating an example of the configuration of a base station according to an embodiment.
  • FIG. 10 is a diagram illustrating an example of the configuration of a user terminal according to an embodiment.
  • FIG. 11 is a diagram illustrating an example of the hardware configuration of a base station and a user terminal according to an embodiment.
  • FIG. 12 is a diagram illustrating an example of a vehicle according to an embodiment.
  • the UE performs reception processing (e.g. reception, demapping, demodulation, Controlling at least one of decoding), transmission processing (eg, at least one of transmission, mapping, precoding, modulation, and encoding) is being considered.
  • reception processing e.g. reception, demapping, demodulation, Controlling at least one of decoding
  • transmission processing e.g, at least one of transmission, mapping, precoding, modulation, and encoding
  • the TCI states may represent those that apply to downlink signals/channels. What corresponds to the TCI state applied to uplink signals/channels may be expressed as a spatial relation.
  • the TCI state is information regarding quasi-co-location (QCL) of signals/channels, and may also be called spatial reception parameters, spatial relation information, etc.
  • the TCI state may be set in the UE on a per-channel or per-signal basis.
  • QCL is an index that indicates the statistical properties of a signal/channel. For example, when one signal/channel and another signal/channel have a QCL relationship, the Doppler shift, Doppler spread, and average delay are calculated between these different signals/channels. ), delay spread, and spatial parameters (e.g., spatial Rx parameters) can be assumed to be the same (QCL with respect to at least one of these). You may.
  • the spatial reception parameters may correspond to the UE's reception beam (eg, reception analog beam), and the beam may be identified based on the spatial QCL.
  • QCL or at least one element of QCL in the present disclosure may be read as sQCL (spatial QCL).
  • QCL types A plurality of types (QCL types) may be defined for QCL.
  • QCL types A-D may be provided with different parameters (or parameter sets) that can be assumed to be the same, and the parameters (which may be referred to as QCL parameters) are shown below: ⁇ QCL type A (QCL-A): Doppler shift, Doppler spread, average delay and delay spread, ⁇ QCL type B (QCL-B): Doppler shift and Doppler spread, ⁇ QCL type C (QCL-C): Doppler shift and average delay, - QCL type D (QCL-D): Spatial reception parameters.
  • Control Resource Set CORESET
  • channel or reference signal is in a particular QCL (e.g. QCL type D) relationship with another CORESET, channel or reference signal, It may also be called a QCL assumption.
  • QCL Control Resource Set
  • the UE may determine at least one of a transmit beam (Tx beam) and a receive beam (Rx beam) for the signal/channel based on the TCI state or QCL assumption of the signal/channel.
  • Tx beam transmit beam
  • Rx beam receive beam
  • the TCI state may be, for example, information regarding the QCL between a target channel (in other words, a reference signal (RS) for the channel) and another signal (for example, another RS). .
  • the TCI state may be set (indicated) by upper layer signaling, physical layer signaling, or a combination thereof.
  • the physical layer signaling may be, for example, downlink control information (DCI).
  • DCI downlink control information
  • Channels for which TCI states or spatial relationships are set are, for example, Physical Downlink Shared Channel (PDSCH), Physical Downlink Control Channel (PDCCH), and Uplink Shared Channel (Physical Uplink Shared Channel).
  • the channel may be at least one of a physical uplink control channel (PUCCH) and a physical uplink control channel (PUCCH).
  • the RS that has a QCL relationship with the channel is, for example, a synchronization signal block (SSB), a channel state information reference signal (CSI-RS), a measurement reference signal (Sounding
  • the signal may be at least one of a tracking reference signal (SRS), a tracking CSI-RS (also referred to as a tracking reference signal (TRS)), and a QCL detection reference signal (also referred to as a QRS).
  • SRS tracking reference signal
  • TRS tracking reference signal
  • QRS QCL detection reference signal
  • the 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 RS of QCL type X in a TCI state may mean an RS that has a QCL type It's okay.
  • the PDSCH may be scheduled with a DCI having a TCI field.
  • the TCI state for PDSCH is indicated by the TCI field.
  • the TCI field of DCI format 1-1 has 3 bits, and the TCI field of DCI format 1-2 has a maximum of 3 bits.
  • the UE In RRC connected mode, if the first intra-DCI TCI information element (upper layer parameter tci-PresentInDCI) is set to "enabled" for a CORESET that schedules a PDSCH, the UE shall It is assumed that a TCI field exists in the DCI format 1_1 of the transmitted PDCCH.
  • upper layer parameter tci-PresentInDCI upper layer parameter
  • the UE can determine the DCI format of the PDSCH transmitted in the CORESET. Assume that there is a TCI field in DCI 1_2 with the DCI field size indicated by the second intra-DCI TCI information element.
  • the PDSCH may be scheduled with a DCI without a TCI field.
  • the DCI format of the DCI is DCI format 1_0, or DCI format 1_1/1_2 in the case where the intra-DCI TCI information element (upper layer parameter tci-PresentInDCI or tci-PresentInDCI-1-2) is not set (enabled). It's okay.
  • a PDSCH is scheduled with a DCI that does not have a TCI field, and if the DL is greater than or equal to 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., scheduling DCI). .
  • a threshold timeDurationForQCL
  • the TCI state (default TCI state) of the PDSCH is the TCI state of the lowest CORESET ID in the latest slot in the active DL BWP of that CC (of a specific UL signal). It may be. 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.
  • MAC CEs are required: a MAC CE for activation/deactivation related to PUCCH space and a MAC CE for activation/deactivation related to SRS space.
  • PUSCH spatial relationships follow SRS spatial relationships.
  • At least one of the MAC CE for activation/deactivation related to PUCCH space and the MAC CE for activation/deactivation related to SRS space may not be used.
  • both the spatial relationship and PL-RS for PUCCH are not configured in FR2 (applicable condition, second condition), default assumption of spatial relationship and PL-RS for PUCCH (default spatial relationship and default PL-RS) applies.
  • both the spatial relationship for SRS (SRS resource for SRS, or SRS resource corresponding to SRI in DCI format 0_1 that schedules PUSCH) and PL-RS are not configured (applicable condition, second condition)
  • Default assumptions of spatial relationship and PL-RS (default spatial relationship and default PL-RS) apply for PUSCH and SRS scheduled by DCI format 0_1.
  • the default spatial relationship and default PL-RS are based on the TCI state or QCL assumption of the CORESET with the lowest CORESET ID in the active DL BWP. There may be. If no CORESET is configured in the active DL BWP on that CC, the default spatial relationship and default PL-RS may be the active TCI state with the lowest ID of the PDSCH in the active DL BWP.
  • the spatial relationship of PUSCH scheduled by DCI format 0_0 follows the spatial relationship of the PUCCH resource with the lowest PUCCH resource ID among the active spatial relationships of PUCCH on the same CC.
  • the network needs to update the PUCCH spatial relationships on all SCells even if no PUCCH is transmitted on the SCell.
  • the application conditions for the default spatial relationship/default PL-RS for SRS may include that the default beam path loss enable information element for SRS (upper layer parameter enableDefaultBeamPlForSRS) is set to valid.
  • the application condition of the default spatial relationship/default PL-RS for PUCCH may include that the default beam path loss enable information element for PUCCH (upper layer parameter enableDefaultBeamPlForPUCCH) is set to valid.
  • the application condition for the default spatial relationship/default PL-RS for PUSCH scheduled by DCI format 0_0 is that the default beam path loss enable information element for PUSCH scheduled by DCI format 0_0 (upper layer parameter enableDefaultBeamPlForPUSCH0_0) is set to valid. It may also include.
  • the RRC parameter (parameter for enabling default beam PL for PUCCH (enableDefaultBeamPL-ForPUCCH), parameter for enabling default beam PL for PUSCH (enableDefaultBeamPL-ForPUSCH0_0)), or SRS If the parameter (enableDefaultBeamPL-ForSRS) is configured and no spatial relationship or PL-RS is configured, the UE applies the default spatial relationship/PL-RS.
  • the above thresholds are: time duration for QCL, "timeDurationForQCL”, “Threshold”, “Threshold for offset between a DCI indicating a TCI state and a PDSCH scheduled by the DCI”, “Threshold- “Sched-Offset”, “ beamSwitchTiming, schedule offset threshold, scheduling offset threshold, etc.
  • the threshold may be reported by the UE as the UE capability (per subcarrier interval). These names may be read interchangeably.
  • the offset between the reception of the DCI and its corresponding PDSCH is less than the threshold timeDurationForQCL, and at least one TCI state configured for the serving cell of the scheduled PDSCH includes "QCL type D", and If the UE is configured with two default TCI enable information elements (enableTwoDefaultTCIStates-r16) and at least one TCI code point (the code point of the TCI field in the DL DCI) indicates two TCI states, the UE shall A DMRS port of a PDSCH or PDSCH transmission occasion is quasi co-located with an RS for QCL parameters associated with two TCI states corresponding to the lowest code point of the TCI code points containing two different TCI states. ) (2 default QCL assumption decision rule). 2 Default TCI Enablement Information Element indicates the Rel. 16 operation is enabled.
  • a default TCI state for single TRP As the default TCI state of PDSCH in 15/16, a default TCI state for single TRP, a default TCI state for multi-TRP based on multi-DCI, and a default TCI state for multi-TRP based on single DCI are specified.
  • the default TCI state of aperiodic CSI-RS (A (periodic)-CSI-RS) in 15/16 is the default TCI state for single TRP, the default TCI state for multi-TRP based on multi-DCI, and the default TCI state for multi-TRP based on single DCI.
  • a default TCI state for multi-TRP is specified.
  • Multi TRP In NR, one or more Transmission/Reception Points (TRPs) (multi TRPs (MTRPs)) communicate with the UE using one or more panels (multi-panels). DL transmission is being considered. Further, it is being considered that the UE performs UL transmission using one or more panels for one or more TRPs.
  • TRPs Transmission/Reception Points
  • multiple TRPs may correspond to the same cell identifier (cell identifier (ID)) or may correspond to different cell IDs.
  • the cell ID may be a physical cell ID or a virtual cell ID.
  • Multi-TRPs may be connected by an ideal/non-ideal backhaul, and information, data, etc. may be exchanged.
  • Each TRP of the multi-TRP may transmit a different code word (CW) and a different layer.
  • NJT Non-Coherent Joint Transmission
  • NJT Non-Coherent Joint Transmission
  • TRP #1 modulates and layer-maps a first codeword to a first number of layers (e.g., 2 layers) to transmit a first PDSCH using a first precoding.
  • TRP #2 modulates and maps the second codeword, performs layer mapping, and transmits the second PDSCH using a second number of layers (eg, 2 layers) using a second precoding.
  • multiple PDSCHs to be NCJTed may be defined as partially or completely overlapping in at least one of the time and frequency domains. That is, the first PDSCH from the first TRP and the second PDSCH from the second TRP may overlap in at least one of time and frequency resources.
  • first PDSCH and second PDSCH may be assumed not to be in a quasi-co-location (QCL) relationship.
  • Reception of multiple PDSCHs may also be interpreted as simultaneous reception of PDSCHs that are not of a certain QCL type (for example, QCL type D).
  • Multiple PDSCHs from multiple TRPs may be scheduled using one DCI (single DCI, single PDCCH) (single master mode, based on single DCI).
  • Multi-TRP single-DCI based multi-TRP.
  • Multiple PDSCHs from multiple TRPs may be scheduled using multiple DCIs (multi-DCI, multiple PDCCH), respectively (multi-master mode, multi-DCI based multi-DCI). TRP)).
  • Ultra-Reliable and Low Latency Communications for multiple TRPs
  • support for PDSCH transport block (TB) or codeword (CW)
  • PDSCH transport block
  • CW codeword
  • Repetition schemes URLLC schemes, reliability enhancement schemes, e.g. schemes 1a, 2a, 2b, 3, 4
  • SDM space division multiplexed
  • FDM frequency division multiplexed
  • RV redundancy version
  • the RVs may be the same or different for multiple TRPs.
  • multiple PDSCHs from multiple TRPs are time division multiplexed (TDM).
  • TDM time division multiplexed
  • multiple PDSCHs from multiple TRPs are transmitted within one slot.
  • multiple PDSCHs from multiple TRPs are transmitted in different slots.
  • one control resource set (CORESET) in the PDCCH configuration information (PDCCH-Config) may correspond to one TRP.
  • the UE may determine that the multi-TRP is based on multi-DCI.
  • TRP may be replaced with CORESET pool index.
  • CORESET pool index A CORESET pool index of 1 is set.
  • Two different values eg, 0 and 1) of the CORESET pool index are set.
  • the UE may determine multi-TRP based on single DCI.
  • the two TRPs may be translated into two TCI states indicated by the MAC CE/DCI.
  • the "Enhanced TCI States Activation/Deactivation for UE-specific PDSCH MAC CE (Enhanced TCI States Activation/Deactivation for UE- specific PDSCH MAC CE) is used.
  • the DCI for common beam indication may be a UE-specific DCI format (for example, DL DCI format (for example, 1_1, 1_2), UL DCI format (for example, 0_1, 0_2)), or a UE-group common (UE-group Common) DCI format may be used.
  • DL DCI format for example, 1_1, 1_2
  • UL DCI format for example, 0_1, 0_2
  • UE-group Common UE-group Common
  • Multi-TRP PDCCH For the reliability of multi-TRP PDCCH based on non-single frequency network (SFN), the following considerations 1 to 3 are considered.
  • SFN non-single frequency network
  • the following considerations 1 to 3 are considered.
  • Encoding/rate matching is based on one repetition, and the same coded bits are repeated in other repetitions.
  • Each repetition has the same number of control channel elements (CCEs), the same coded bits, and corresponds to the same DCI payload.
  • CCEs control channel elements
  • Two or more PDCCH candidates are explicitly linked to each other. The UE knows the link before decoding.
  • Two sets of PDCCH candidates (within a given search space (SS) set) are respectively associated with two TCI states of the CORESET.
  • the same CORESET, the same SS set, and PDCCH repetition in different monitoring occasions are used.
  • Two sets of PDCCH candidates are associated with two SS sets, respectively. Both SS sets are associated with a CORESET, and each SS set is associated with only one TCI state of that CORESET. Here, the same CORESET, two SS sets, is used.
  • CORESETPoolIndex which may be called TRP information (TRP Info)
  • TRP Info TRP information
  • a CORESET pool index is set for each CORESET.
  • SFN single frequency network
  • RRC signaling/MAC CE upper layer signaling
  • SFN contributes to at least one of the operation and reliability improvement of HST (high speed train).
  • each search space set is associated with a corresponding CORESET (enhancement 2 ).
  • the two search space sets may be associated with the same or different CORESETs.
  • One (maximum one) TCI state can be set/activated for one CORESET using upper layer signaling (RRC signaling/MAC CE).
  • two search space sets are associated with different CORESETs with different TCI states, it may mean repeated transmission of multiple TRPs. If two search space sets are associated with the same CORESET (CORESET with the same TCI state), it may mean repeated transmission of a single TRP.
  • HST high speed train
  • the large antenna transmits outside/inside the tunnel.
  • the transmission power of a large antenna is about 1 to 5W.
  • the transmission power of a small antenna is about 250 mW.
  • Multiple small antennas (transmission/reception points) with the same cell ID and a distance of 300 m form a single frequency network (SFN). All small antennas within an SFN transmit the same signal at the same time on the same PRB. It is assumed that a terminal transmits and receives data to and from one base station. In reality, multiple transmitting and receiving points transmit the same DL signal.
  • transmission and reception points in units of several kilometers form one cell. Handover is performed when crossing cells. This allows the frequency of handovers to be reduced.
  • NR data is transmitted from a transmission point (e.g., RRH) in order to communicate with a terminal (hereinafter also referred to as UE) included in a mobile object such as a high-speed train (HST) that moves at high speed. It is assumed that beams will be used.
  • a transmission point e.g., RRH
  • UE terminal
  • HST high-speed train
  • Existing systems eg, Rel. 15
  • FIG. 1A shows a case in which RRHs are installed along the moving route (or moving direction, advancing direction, running route) of a moving body, and a beam is formed from each RRH in the moving direction of the moving body.
  • An RRH that forms a beam in one direction may be called a uni-directional RRH.
  • the mobile receives a negative Doppler shift (-f D ) from each RRH.
  • the beam is not limited to this, and may be formed in the opposite direction to the direction of movement of the moving body, or the beam may be formed in the direction of movement of the moving body.
  • the beam may be formed in any direction regardless of the
  • a plurality of beams (for example, two or more) are transmitted from the RRH.
  • beams are formed both in the traveling direction of the moving object and in the opposite direction (see FIG. 1B).
  • FIG. 1B shows a case in which RRHs are installed along the moving route of a moving object, and beams are formed from each RRH both in the direction of movement of the moving object and in the direction opposite to the direction of movement.
  • An RRH that forms beams in multiple directions may be referred to as a bi-directional RRH.
  • the UE communicates similarly to single TRP.
  • the mobile device when two RRHs (here, RRH #1 and RRH #2) use SFN, the mobile device receives a signal with a negative Doppler shift in the middle of the two RRHs, and the power is high.
  • the signal switches to a signal that has undergone a positive Doppler shift.
  • the maximum Doppler shift change that requires correction is from -f D to +f D , which is twice as much as in the case of unidirectional RRH.
  • the tracking reference signal (TRS), DMRS, and PDSCH are commonly transmitted (using the same time and frequency resources) to the two TRPs (RRHs) (regular SFN, transparent transparent SFN, HST-SFN).
  • the UE receives a DL channel/signal corresponding to a single TRP, so there is one TCI state for the PDSCH.
  • RRC parameters for distinguishing between transmission using single TRP and transmission using SFN are defined. If the UE reports the corresponding UE capability information, it may differentiate between receiving a single TRP DL channel/signal and receiving a PDSCH assuming SFN based on the RRC parameters. On the other hand, the UE may assume a single TRP and perform transmission and reception using SFN.
  • the TRS is transmitted TRP-specifically (using different time/frequency resources depending on the TRP).
  • TRS1 is transmitted from TRP#1
  • TRS2 is transmitted from TRP#2.
  • SFN scheme 1 (SFN scheme 1) may be referred to as SFN scheme A.
  • TRS and DMRS are transmitted TRP-specifically.
  • TRS1 and DMRS1 are transmitted from TRP#1, and TRS2 and DMRS2 are transmitted from TRP#2.
  • schemes 1 and 2 can suppress sudden changes in Doppler shift and appropriately estimate/guarantee Doppler shift. Since the DMRS of Scheme 2 is increased more than that of Scheme 1, the maximum throughput of Scheme 2 is lower than that of Scheme 1.
  • the UE switches between single TRP and SFN based on upper layer signaling (RRC information element/MAC CE).
  • the UE may switch scheme 1/scheme 2/NW pre-compensation scheme based on upper layer signaling (RRC information element/MAC CE).
  • RRC information element/MAC CE upper layer signaling
  • the TRPs (TRP #0, #2, ...) that transmit DL signals in the opposite direction of the HST are connected to the first TRS (TRS arriving from before the HST) in the same time and frequency resource (SFN). ) to send.
  • the TRPs (TRP #1, #3, . . . ) that transmit DL signals in the direction of movement of the HST transmit the second TRS (TRS that arrives after the HST) in the same time and frequency resources (SFN).
  • the first TRS and the second TRS may be transmitted/received using different frequency resources.
  • TRS1-1 to TRS1-4 are transmitted as the first TRS, and TRS2-1 to TRS2-4 are transmitted as the second TRS.
  • the first TRS is transmitted using 64 beams and 64 time resources
  • the second TRS is transmitted using 64 beams and 64 time resources.
  • the beam of the first TRS and the beam of the second TRS are considered to be equal (QCL type D RS are equal).
  • RRHs #0 to #7 are arranged along the HST movement route.
  • RRH #0-#3 and RRH #4-#7 are connected to baseband units (BBU) #0 and #1, respectively.
  • BBU baseband units
  • Each RRH is a bidirectional RRH, and forms beams in both the traveling direction and the opposite direction of the moving route using each transmission/reception point (TRP).
  • the signal/channel (beam in the forward direction of HST, after the UE) transmitted from TRP #2n-1 (n is an integer greater than or equal to 0) If the UE receives a beam from , there will be a negative Doppler shift (-f D in this example). In addition, when the UE receives a signal/channel (beam in the opposite direction of the HST traveling direction, beam from in front of the UE) transmitted from TRP #2n (n is an integer greater than or equal to 0), a positive Doppler shift ( In this example, +f D ) occurs.
  • TRP performs Doppler correction in advance when transmitting a DL signal/channel to the UE, thereby making it possible to reduce the influence of Doppler shift when the UE receives the DL signal/channel.
  • the NW pre-compensation scheme may be a combination of Scheme 1 and Doppler shift pre-compensation by the base station.
  • the NW pre-compensation, TRP-based pre-compensation scheme may be referred to as SFN scheme B.
  • the TRP that forms a beam in the traveling direction of the moving route and the TRP that forms the beam in the opposite direction to the traveling direction of the moving route performs Doppler correction and then DL signals/channels are transmitted.
  • TRP #2n-1 performs positive Doppler correction
  • TRP #2n performs negative Doppler correction to reduce the effect of Doppler shift on the reception of the UE's signal/channel (Fig. 4C).
  • TCI field TCI status field
  • each TCI code point TCI code point (TCI field code point, DCI code point) using RRC information element/MAC CE (e.g. Enhanced TCI States Activation/Deactivation for UE-specific PDSCH MAC CE)/DCI (TCI field)
  • RRC information element/MAC CE e.g. Enhanced TCI States Activation/Deactivation for UE-specific PDSCH MAC CE
  • TCI field TCI field
  • a UE may decide to receive a single TRP PDSCH when it is configured/indicated to have one TCI state. Further, when the UE is configured/instructed to set two TCI states, the UE may determine to receive an SFN PDSCH using multi-TRP.
  • SFN-CORESET CORESET with two active TCI states, sfnSchemePdcch
  • SFN SFN scheme, sfnSchemePdsch
  • the PDSCH QCL assumption may correspond to the minimum CORESET ID in the latest slot. If two active TCI states are indicated for the CORESET, the first of them may be applied to the PDSCH.
  • a threshold e.g., "timeDurationForQCL”
  • the UE may prioritize reception of PDCCH. Note that at this time, the UE may or may not receive the PDSCH using the assumed QCL of the PDCCH.
  • two active TCI states (TCI #1 and TCI #2) are specified for CORESET #1 (PDCCH) set in the latest slot before PDSCH
  • two active TCI states (TCI #3 and TCI #4) are indicated for CORESET #2 (PDCCH) that is configured in at least the same symbol as the PDSCH.
  • TCI #1 which is the first TCI state among the TCI states with the smallest CORESET ID in the latest slot, is applied to the PDSCH. .
  • CORESET #2 (PDCCH) with the same symbol as PDSCH, it is also possible to apply the TCI state of CORESET #2 to PDSCH.
  • the UE cannot receive the PDSCH by assuming/using two TCI states (TCI #3 and TCI #4).
  • the present inventors came up with a method for appropriately controlling operations related to TCI state/QCL assumption.
  • A/B and “at least one of A and B” may be read interchangeably. Furthermore, in the present disclosure, “A/B/C” may mean “at least one of A, B, and C.”
  • notification, activate, deactivate, indicate, select, configure, update, determine, etc. may be read interchangeably.
  • supporting, controlling, being able to control, operating, capable of operating, etc. may be read interchangeably.
  • Radio Resource Control RRC
  • RRC parameters RRC parameters
  • RRC messages upper layer parameters, fields, Information Elements (IEs), settings, etc.
  • IEs Information Elements
  • CE Medium Access Control Element
  • update command activation/deactivation command, etc.
  • the upper layer signaling may be, for example, Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information, etc., or a combination thereof.
  • RRC Radio Resource Control
  • MAC Medium Access Control
  • MAC signaling may use, for example, a MAC Control Element (MAC CE), a MAC Protocol Data Unit (PDU), or the like.
  • Broadcast information includes, for example, a master information block (MIB), a system information block (SIB), a minimum system information (RMSI), and other system information ( Other System Information (OSI)) may also be used.
  • MIB master information block
  • SIB system information block
  • RMSI minimum system information
  • OSI Other System Information
  • the physical layer signaling may be, for example, downlink control information (DCI), uplink control information (UCI), etc.
  • DCI downlink control information
  • UCI uplink control information
  • an index an identifier (ID), an indicator, a resource ID, etc.
  • ID an identifier
  • indicator an indicator
  • resource ID a resource ID
  • sequences, lists, sets, groups, groups, clusters, subsets, etc. may be used interchangeably.
  • a panel, a UE panel, a panel group, a beam, a beam group, a precoder, an uplink (UL) transmitting entity, a transmission/reception point (TRP), a base station, and a spatial relation information (SRI) are described.
  • SRS resource indicator SRI
  • control resource set CONtrol REsource SET (CORESET)
  • Physical Downlink Shared Channel PDSCH
  • codeword CW
  • Transport Block Transport Block
  • TB transport Block
  • RS reference signal
  • antenna port e.g. demodulation reference signal (DMRS) port
  • antenna port group e.g.
  • DMRS port group groups (e.g., spatial relationship groups, Code Division Multiplexing (CDM) groups, reference signal groups, CORESET groups, Physical Uplink Control Channel (PUCCH) groups, PUCCH resource groups), resources (e.g., reference signal resources, SRS resource), resource set (for example, reference signal resource set), CORESET pool, downlink Transmission Configuration Indication state (TCI state) (DL TCI state), uplink TCI state (UL TCI state), unified TCI Unified TCI state, common TCI state, quasi-co-location (QCL), QCL assumption, etc. may be read interchangeably.
  • groups e.g., spatial relationship groups, Code Division Multiplexing (CDM) groups, reference signal groups, CORESET groups, Physical Uplink Control Channel (PUCCH) groups, PUCCH resource groups
  • resources e.g., reference signal resources, SRS resource
  • resource set for example, reference signal resource set
  • CORESET pool downlink Transmission Configuration Indication state (TCI state) (DL TCI state), up
  • spatial relationship information identifier (TCI status ID) and the spatial relationship information (TCI status) may be read interchangeably.
  • “Spatial relationship information” may be interchangeably read as “a set of spatial relationship information”, “one or more pieces of spatial relationship information”, etc. TCI status and TCI may be read interchangeably.
  • the panel may be associated with at least one of a group index of an SSB/CSI-RS group, a group index of group-based beam reporting, and a group index of an SSB/CSI-RS group for group-based beam reporting.
  • the panel identifier (ID) and the panel may be read interchangeably. That is, TRP ID and TRP, CORESET group ID and CORESET group, etc. may be read interchangeably.
  • one of two TCI states associated with one code point of TRP, transmission point, panel, DMRS port group, CORESET pool, TCI field may be read interchangeably.
  • single TRP, single TRP system, single TRP transmission, and single PDSCH may be interchanged.
  • multi-TRP, multi-TRP system, multi-TRP transmission, and multi-PDSCH may be interchanged.
  • a single DCI, a single PDCCH, multiple TRPs based on a single DCI, and activated two TCI states on at least one TCI code point may be read interchangeably.
  • no CORESET pool index (CORESETPoolIndex) value of 1 is set for any CORESET, and no code point in the TCI field is mapped to two TCI states. .
  • multiple TRPs channels using multiple TRPs, channels using multiple TCI state/spatial relationships, multiple TRPs being enabled by RRC/DCI, multiple TCI states/spatial relationships being enabled by RRC/DCI, At least one of the multi-TRP based on the single DCI and the multi-TRP based on the multi-DCI may be read interchangeably.
  • multiple TRPs based on multiple DCIs and a CORESET pool index (CORESETPoolIndex) value of 1 being set for a CORESET may be read interchangeably.
  • multiple TRPs based on a single DCI at least one code point of a TCI field being mapped to two TCI states, may be read interchangeably.
  • single DCI sDCI
  • single PDCCH multi-TRP system based on single DCI
  • sDCI-based MTRP activated two TCI states on at least one TCI code point
  • multi-DCI multi-PDCI
  • multi-PDCCH multi-PDCCH
  • multi-TRP system based on multi-DCI
  • mDCI-based MTRP two CORESET pool indexes
  • the QCL (type) of the present disclosure may be interchanged with any QCL type (for example, QCL type A/B/C/D).
  • TCI state A is the same QCL type A/D as TCI state B
  • TCI state A is the same as TCI state B
  • TCI state A is the same QCL type as TCI state B
  • TCI state A is the same QCL type as TCI state B
  • TCI state A is the same QCL type as TCI state B
  • TCI state A is the same QCL type as TCI state B
  • TCI state A is the same QCL type as TCI state B
  • TCI state A is the same QCL type as TCI state B
  • A/D QCL type as TCI state B
  • TCI state A has a relationship of QCL type A/D with TCI state B
  • etc. may be read interchangeably.
  • the code points of the DCI field 'Transmission Configuration Indication', the TCI code points, the DCI code points, and the code points of the TCI field may be read interchangeably.
  • DCI that does not include a TCI field may mean DCI format 1_0.
  • DCI that does not include a TCI field is defined as DCI format 1_1/1_2 when a specific upper layer parameter (e.g., a parameter indicating the presence of TCI (e.g., tci-PresentInDCI)) is set/enabled. It can also mean
  • single TRP and SFN may be read interchangeably.
  • HST, HST scheme, high-speed movement scheme, scheme 1, scheme 2, NW pre-compensation scheme, HST scheme 1, HST scheme 2, and HST NW pre-compensation scheme may be read interchangeably.
  • PDSCH/PDCCH using single TRP may be interchanged with PDSCH/PDCCH based on single TRP, single TRP PDSCH/PDCCH, and non-SFN PDSCH/PDCCH.
  • PDSCH/PDCCH using SFN may be interchanged with PDSCH/PDCCH using SFN in multi-channel, PDSCH/PDCCH based on SFN, and SFN PDSCH/PDCCH.
  • receiving DL signals (PDSCH/PDCCH) using SFN means transmitting the same data (PDSCH)/control information (PDCCH) to multiple It may also mean receiving from a sending/receiving point.
  • Receiving a DL signal using SFN also means using the same time/frequency resources and/or the same data/control information using multiple TCI states/spatial domain filters/beams/QCLs. It may also mean receiving the information.
  • HST-SFN scheme Rel. SFN scheme after Rel.17
  • new SFN scheme new HST-SFN scheme
  • Rel. 17 and later HST-SFN scenarios HST-SFN schemes for HST-SFN scenarios
  • SFN schemes for HST-SFN scenarios SFN schemes for HST-SFN scenarios
  • Scheme 1 Doppler precompensation scheme
  • Scheme 1 HST Scheme 1 (HST Scheme 1) and Doppler precompensation schemes At least one of these may be read interchangeably.
  • Doppler pre-compensation scheme may be read interchangeably.
  • a pre-compensation scheme, a reduction scheme, an improvement scheme, and a correction scheme may be read interchangeably.
  • received DL channel/signal, DL channel/signal, DL reception, received signal, received channel, etc. may be read interchangeably.
  • UL channel/signal, transmission of UL channel/signal, and UL transmission may be interchanged.
  • signal and channel may be interchanged.
  • buffering and buffer may be read interchangeably.
  • the first TCI state may mean at least one of the first TCI state and a TCI state with a small (or large) TCI state ID.
  • the second TCI state may mean at least one of a second TCI state and a TCI state with a large (or small) TCI state ID.
  • the first TCI state and the second TCI state may be interchanged.
  • two (default) TCI states will be described as a main example, but the number is not limited to two, and each embodiment can also be described as appropriate for a number of (default) TCI states larger than two. Applicable.
  • CORESET and PDCCH may be read interchangeably.
  • SFN-CORESET (CORESET with two active TCI states) may be configured for the UE.
  • the SFN (SFN scheme, sfnSchemePdsch) for PDSCH does not need to be configured for the UE.
  • SFN-CORESET is configured
  • SFN for PDCCH is configured
  • SFN configuration parameters for PDCCH e.g., sfnSchemePdcch
  • specific values/conditions e.g., scheme A, sfnSchemeA.
  • ⁇ CORESET with two active TCI states'' and ⁇ CORESET with two active TCI states'' may be read interchangeably.
  • the terms "SFN for PDSCH is not set” and "SFN configuration parameters for PDSCH (for example, sfnSchemePdsch) are not set” may be read interchangeably. If the UE is not configured with SFN configuration parameters for PDSCH (eg, sfnSchemePdsch), the UE may decide to use PDSCH with a single TRP. If the UE is not configured with SFN configuration parameters for PDSCH (eg, sfnSchemePdsch), the UE may determine to be configured with a PDSCH with a single TRP.
  • the UE may apply a specific TCI state/QCL assumption to the PDSCH corresponding to the scheduling DCI (application 1).
  • a threshold e.g., "timeDurationForQCL”
  • the particular TCI state/QCL assumption may be, for example, the TCI state/QCL assumption indicated by the CORESET of the lowest CORESET ID in the latest slot. If two active TCI states are indicated for the CORESET, the UE may decide to apply the first TCI state (or the second TCI state) to the PDSCH.
  • the UE may prioritize reception of PDCCH/CORESET (action 1).
  • prioritizing the reception of PDCCH/CORESET, not receiving PDSCH, and applying the TCI state of PDCCH/CORESET of the same symbol as PDSCH to reception of PDSCH may be read as each other.
  • the QCL type D of the PDCCH/CORESET/DMRS for the PDCCH and the QCL type D of the DMRS for the PDSCH/PDSCH may be different.
  • Application of operation 1 above may be limited to the case where one TCI state is activated for PDCCH/CORESET of the same symbol as PDSCH.
  • Application of operation 1 above may be limited to the case where one active TCI state is indicated for PDCCH/CORESET of the same symbol as PDSCH.
  • the UE may apply operation 1 above only when one TCI state is activated for PDCCH/CORESET of the same symbol as PDSCH.
  • the SFN scheme does not need to be set for PDCCH/CORESET with the same symbol as PDSCH. Further, the SFN scheme may be set for PDCCH/CORESET having the same symbol as the PDSCH, and the number of active TCI states to be instructed may be one.
  • FIG. 6 is a diagram illustrating an example of application of TCI states according to the embodiment of the present disclosure.
  • CORESET #1 is set in the latest slot before receiving the PDSCH
  • CORESET #2 is set in at least one same symbol as the PDSCH.
  • TCI #1 and TCI #2 are designated as the active TCI state to CORESET #1
  • TCI #3 is designated as the active TCI state to CORESET #2.
  • the UE applies TCI #3, which is the TCI state corresponding to CORESET #2, to reception of the PDSCH.
  • the PDSCH is a single TRP PDSCH, it is possible to appropriately receive the PDSCH.
  • the above operation 1 may be applied when two TCI states are activated for PDCCH/CORESET of the same symbol as PDSCH.
  • the above operation 1 may be applied when two active TCI states are indicated for the PDCCH/CORESET of the same symbol as the PDSCH.
  • the UE may apply operation 1 above when two TCI states are activated for PDCCH/CORESET of the same symbol as PDSCH.
  • the UE may apply a specific TCI state (for example, the first TCI state/second TCI state) among the two TCI states to the reception of the PDSCH.
  • a specific TCI state for example, the first TCI state/second TCI state
  • the specific TCI state may be defined in advance in the specifications.
  • the specific TCI state may be notified to the UE using higher layer signaling (RRC/MAC CE).
  • FIG. 7 is a diagram illustrating an example of application of TCI states according to an embodiment variation of the present disclosure.
  • CORESET #1 is set in the latest slot before receiving the PDSCH
  • CORESET #2 is set in at least one symbol that is the same as the PDSCH.
  • TCI #1 and TCI #2 are designated as active TCI states to CORESET #1
  • TCI #3 and TCI #4 are designated as active TCI states to CORESET #2.
  • the UE applies TCI #3 (or TCI #4), which is the TCI state corresponding to CORESET #2, to reception of the PDSCH.
  • TCI #3 or TCI #4
  • the TCI state applied to reception of the PDSCH may be defined in advance in the specifications, or may be notified to the UE using upper layer signaling (RRC/MAC CE).
  • the PDSCH is a single TRP PDSCH, it is possible to appropriately receive the PDSCH.
  • Notification of information to UE is performed using physical layer signaling (e.g. DCI), higher layer signaling (e.g. RRC signaling, MAC CE), specific signals/channels (e.g. PDCCH, PDSCH, reference signals), or a combination thereof. It's okay.
  • NW Network
  • BS Base Station
  • the MAC CE may be identified by including a new logical channel ID (LCID), which is not specified in the existing standard, in the MAC subheader.
  • LCID logical channel ID
  • the above notification When the above notification is performed by a DCI, the above notification includes a specific field of the DCI, a radio network temporary identifier (Radio Network Temporary Identifier (RNTI)), the format of the DCI, etc.
  • RNTI Radio Network Temporary Identifier
  • notification of any information to the UE in the above embodiments may be performed periodically, semi-persistently, or aperiodically.
  • the notification of any information from the UE (to the NW) in the above embodiments is performed using physical layer signaling (e.g. UCI), upper layer signaling (e.g. , RRC signaling, MAC CE), specific signals/channels (eg, PUCCH, PUSCH, PRACH, reference signals), or a combination thereof.
  • physical layer signaling e.g. UCI
  • upper layer signaling e.g. , RRC signaling, MAC CE
  • specific signals/channels eg, PUCCH, PUSCH, PRACH, reference signals
  • the MAC CE may be identified by including a new LCID that is not defined in the existing standard in the MAC subheader.
  • the above notification may be transmitted using PUCCH or PUSCH.
  • notification of arbitrary information from the UE in the above embodiments may be performed periodically, semi-persistently, or aperiodically.
  • At least one of the embodiments described above may be applied if certain conditions are met.
  • the specific conditions may be specified in the standard, or may be notified to the UE/BS using upper layer signaling/physical layer signaling.
  • At least one of the embodiments described above may be applied only to UEs that have reported or support a particular UE capability.
  • the particular UE capability may indicate at least one of the following: - Supporting specific processing/operation/control/information (eg, SFN-CORESET/PDCCH) for at least one of the above embodiments.
  • - Supporting specific processing/operation/control/information eg, SFN-CORESET/PDCCH
  • the specific UE capability may be a capability that is applied across all frequencies (commonly regardless of frequency) or a capability that is applied across all frequencies (e.g., cell, band, band combination, BWP, component carrier, etc.). or a combination thereof), or it may be a capability for each frequency range (for example, Frequency Range 1 (FR1), FR2, FR3, FR4, FR5, FR2-1, FR2-2). Alternatively, it may be a capability for each subcarrier spacing (SCS), or a capability for each Feature Set (FS) or Feature Set Per Component-carrier (FSPC).
  • SCS subcarrier spacing
  • FS Feature Set
  • FSPC Feature Set Per Component-carrier
  • the above-mentioned specific UE capability may be a capability that is applied across all duplex schemes (commonly regardless of the duplex scheme), or may be a capability that is applied across all duplex schemes (for example, Time Division Duplex).
  • the capability may be for each frequency division duplex (TDD)) or frequency division duplex (FDD)).
  • the UE configures/activates specific information related to the embodiment described above (or performs the operation of the embodiment described above) by upper layer signaling/physical layer signaling. / May be applied when triggered.
  • the specific information may be information indicating that SFN-CORESET/PDCCH is enabled, arbitrary RRC parameters for a specific release (eg, Rel. 18/19), and the like.
  • the UE does not support at least one of the specific UE capabilities or is not configured with the specific information, for example, Rel. 15/16 operations may be applied.
  • the control unit determines the TCI state to be applied to the PDSCH based on the TCI state instructed to the PDCCH only when the number of TCI states instructed to the PDCCH is one.
  • the control unit determines the specific TCI state based on upper layer signaling from the two TCI states indicated on the PDCCH, and The terminal according to any one of appendices 1 to 3, which applies a specific TCI state to the PDSCH.
  • 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-described embodiments of the present disclosure or a combination thereof.
  • FIG. 8 is a diagram illustrating an example of a schematic configuration of a wireless communication system according to an embodiment.
  • 5G NR 5th generation mobile communication system New Radio
  • 3GPP Third Generation Partnership Project
  • the wireless communication system 1 may support dual connectivity between multiple Radio Access Technologies (RATs) (Multi-RAT Dual Connectivity (MR-DC)).
  • MR-DC has dual connectivity between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA)) and NR (E-UTRA-NR Dual Connectivity (EN-DC)), and dual connectivity between NR and LTE (NR-E -UTRA Dual Connectivity (NE-DC)).
  • RATs Radio Access Technologies
  • MR-DC has dual connectivity between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA)) and NR (E-UTRA-NR Dual Connectivity (EN-DC)), and dual connectivity between NR and LTE (NR-E -UTRA Dual Connectivity (NE-DC)).
  • 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 (Master Node (MN)), and the NR base station (gNB) is the secondary node (Secondary Node (SN)).
  • the NR base station (gNB) is the MN
  • the LTE (E-UTRA) base station (eNB) is the SN.
  • the wireless communication system 1 has dual connectivity between multiple base stations within the same RAT (for example, dual connectivity (NR-NR Dual Connectivity (NN-DC) where both the MN and SN are NR base stations (gNB)). )) may be supported.
  • dual connectivity NR-NR Dual Connectivity (NN-DC) where both the MN and SN are NR base stations (gNB)).
  • the wireless communication system 1 includes a base station 11 that forms a macro cell C1 with relatively wide coverage, and base stations 12 (12a-12c) that are located within the macro cell C1 and form a small cell C2 that is narrower than the macro cell C1. You may prepare.
  • User terminal 20 may be located within at least one cell. The arrangement, number, etc. of each cell and user terminal 20 are not limited to the embodiment shown in the figure. Hereinafter, when base stations 11 and 12 are not distinguished, they will be collectively referred to as base station 10.
  • the user terminal 20 may be connected to at least one of the plurality of base stations 10.
  • the user terminal 20 may use at least one of carrier aggregation (CA) using a plurality of 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)).
  • Macro cell 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 FR1 may correspond to a higher frequency band than FR2, for example.
  • 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
  • the plurality of base stations 10 may be connected by wire (for example, optical fiber, X2 interface, etc. compliant with Common Public Radio Interface (CPRI)) or wirelessly (for example, NR communication).
  • wire for example, optical fiber, X2 interface, etc. compliant with Common Public Radio Interface (CPRI)
  • NR communication for example, when NR communication is used as a backhaul between base stations 11 and 12, base station 11, which is an upper station, is an Integrated Access Backhaul (IAB) donor, and base station 12, which is a relay station, is an IAB donor. May also be called a node.
  • IAB Integrated Access Backhaul
  • the base station 10 may be connected to the core network 30 via another base station 10 or directly.
  • the core network 30 may include, for example, at least one of Evolved Packet Core (EPC), 5G Core Network (5GCN), Next Generation Core (NGC), and the like.
  • EPC Evolved Packet Core
  • 5GCN 5G Core Network
  • NGC Next Generation Core
  • the core network 30 includes, for example, User Plane Function (UPF), Access and Mobility Management Function (AMF), Session Management Function (SMF), Unified Data Management (UDM), Application Function (AF), Data Network (DN), and Location. It may also include network functions (NF) such as Management Function (LMF) and Operation, Administration and Maintenance (Management) (OAM). Note that multiple functions may be provided by one network node. Further, communication with an external network (eg, the Internet) may be performed via the DN.
  • UPF User Plane Function
  • AMF Access and Mobility Management Function
  • SMF Session Management Function
  • UDM Unified Data Management
  • AF Application Function
  • DN Data Network
  • NF network functions
  • NF network functions
  • LMF Management Function
  • OAM Operation, Administration and Maintenance
  • the user terminal 20 may be a terminal compatible with at least one of communication systems such as LTE, LTE-A, and 5G.
  • an orthogonal frequency division multiplexing (OFDM)-based wireless access method 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
  • a wireless access method may also be called a waveform.
  • other wireless access methods for example, other single carrier transmission methods, other multicarrier transmission methods
  • the UL and DL radio access methods may be used as the UL and DL radio access methods.
  • the downlink channels include a physical downlink shared channel (PDSCH) shared by each user terminal 20, a broadcast channel (physical broadcast channel (PBCH)), and a downlink control channel (physical downlink control). Channel (PDCCH)) or the like may be used.
  • PDSCH physical downlink shared channel
  • PBCH physical broadcast channel
  • PDCCH downlink control channel
  • uplink channels include a physical uplink shared channel (PUSCH) shared by each user terminal 20, an uplink control channel (PUCCH), and a random access channel. (Physical Random Access Channel (PRACH)) or the like may be used.
  • PUSCH physical uplink shared channel
  • PUCCH uplink control channel
  • PRACH Physical Random Access Channel
  • User data, upper layer control information, System Information Block (SIB), etc. are transmitted by the PDSCH.
  • User data, upper layer control information, etc. may be transmitted by PUSCH.
  • a Master Information Block (MIB) may be transmitted via the PBCH.
  • Lower layer control information may be transmitted by PDCCH.
  • the lower layer control information may include, for example, downlink control information (DCI) that includes scheduling information for at least one of PDSCH and PUSCH.
  • DCI downlink control information
  • DCI that schedules PDSCH may be called DL assignment, DL DCI, etc.
  • DCI that schedules PUSCH may be called UL grant, UL DCI, etc.
  • PDSCH may be replaced with DL data
  • PUSCH may be replaced with UL data.
  • a control resource set (CONtrol REsource SET (CORESET)) and a search space may be used to detect the PDCCH.
  • CORESET corresponds to a resource for searching DCI.
  • the search space corresponds to a search area and a search method for PDCCH candidates (PDCCH candidates).
  • PDCCH candidates 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 “search space”, “search space set”, “search space setting”, “search space set setting”, “CORESET”, “CORESET setting”, etc. in the present disclosure may be read interchangeably.
  • the PUCCH allows channel state information (CSI), delivery confirmation information (for example, may be called Hybrid Automatic Repeat Request ACKnowledgement (HARQ-ACK), ACK/NACK, etc.), and scheduling request ( Uplink Control Information (UCI) including at least one of SR)) may be transmitted.
  • CSI channel state information
  • delivery confirmation information for example, may be called Hybrid Automatic Repeat Request ACKnowledgement (HARQ-ACK), ACK/NACK, etc.
  • UCI Uplink Control Information including at least one of SR
  • a random access preamble for establishing a connection with a cell may be transmitted by PRACH.
  • downlinks, uplinks, etc. may be expressed without adding "link”.
  • various channels may be expressed without adding "Physical” at the beginning.
  • a synchronization signal (SS), a downlink reference signal (DL-RS), and the like may be transmitted.
  • the DL-RS includes a cell-specific reference signal (CRS), a channel state information reference signal (CSI-RS), and a demodulation reference signal (DeModulation).
  • Reference Signal (DMRS)), Positioning Reference Signal (PRS), 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 SS (PSS, SSS) and PBCH (and DMRS for PBCH) may be called an SS/PBCH block, SS Block (SSB), etc. Note that SS, SSB, etc. may also be called reference signals.
  • DMRS Downlink Reference Signal
  • UL-RS uplink reference signals
  • SRS Sounding Reference Signal
  • DMRS demodulation reference signals
  • UE-specific reference signal user terminal-specific reference signal
  • FIG. 9 is a diagram illustrating an example of the configuration of a base station according to an embodiment.
  • the base station 10 includes a control section 110, a transmitting/receiving section 120, a transmitting/receiving antenna 130, and a transmission line interface 140. Note that one or more of each of the control unit 110, the transmitting/receiving unit 120, the transmitting/receiving antenna 130, and the transmission path interface 140 may be provided.
  • this example mainly shows functional blocks that are characteristic of the present embodiment, and it may be assumed that the base station 10 also has other functional blocks necessary for wireless communication. A part 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 configured from a controller, a control circuit, etc., which will be explained based on common recognition in the technical field related to the present disclosure.
  • the control unit 110 may control signal generation, scheduling (e.g., resource allocation, mapping), and the like.
  • the control unit 110 may control transmission and reception, measurement, etc. using the transmitting/receiving unit 120, the transmitting/receiving antenna 130, and the transmission path interface 140.
  • the control unit 110 may generate data, control information, a sequence, etc. to be transmitted as a signal, and may transfer the generated data to the transmitting/receiving unit 120.
  • the control unit 110 may perform communication channel call processing (setting, release, etc.), status management of the base station 10, radio resource management, and the like.
  • the transmitting/receiving section 120 may include a baseband section 121, a radio frequency (RF) section 122, and a measuring section 123.
  • the baseband section 121 may include a transmission processing section 1211 and a reception processing section 1212.
  • the transmitter/receiver unit 120 includes a transmitter/receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transmitter/receiver circuit, etc., which are explained based on common understanding in the technical field related to the present disclosure. be able to.
  • the transmitting/receiving section 120 may be configured as an integrated transmitting/receiving section, or may be configured from a transmitting section and a receiving section.
  • the transmitting section may include a transmitting processing section 1211 and an RF section 122.
  • the reception section may include a reception processing section 1212, an RF section 122, and a measurement section 123.
  • the transmitting/receiving antenna 130 can be configured from an antenna described based on common recognition in the technical field related to the present disclosure, such as an array antenna.
  • the transmitter/receiver 120 may transmit the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc.
  • the transmitter/receiver 120 may receive the above-mentioned uplink channel, uplink reference signal, and the like.
  • the transmitting/receiving unit 120 may form at least one of a transmitting beam and a receiving beam using digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), or the like.
  • digital beamforming e.g., precoding
  • analog beamforming e.g., phase rotation
  • the transmitting/receiving unit 120 (transmission processing unit 1211) performs Packet Data Convergence Protocol (PDCP) layer processing, Radio Link Control (RLC) layer processing (for example, RLC retransmission control), Medium Access Control (MAC) layer processing (for example, HARQ retransmission control), etc. may be performed to generate a bit string to be transmitted.
  • PDCP Packet Data Convergence Protocol
  • RLC Radio Link Control
  • MAC Medium Access Control
  • HARQ retransmission control for example, HARQ retransmission control
  • the transmitting/receiving unit 120 performs channel encoding (which may include error correction encoding), modulation, mapping, filter processing, and discrete Fourier transform (DFT) on the bit string to be transmitted.
  • a baseband signal may be output by performing transmission processing such as processing (if necessary), Inverse Fast Fourier Transform (IFFT) processing, precoding, and digital-to-analog conversion.
  • IFFT Inverse Fast Fourier Transform
  • the transmitting/receiving unit 120 may perform modulation, filter processing, amplification, etc. on the baseband signal in a radio frequency band, and may transmit the signal in the radio frequency band via the transmitting/receiving antenna 130. .
  • the transmitting/receiving section 120 may perform amplification, filter processing, demodulation into a baseband signal, etc. on the radio frequency band signal received by the transmitting/receiving antenna 130.
  • the transmitting/receiving unit 120 (reception processing unit 1212) performs analog-to-digital conversion, fast Fourier transform (FFT) processing, and inverse discrete Fourier transform (IDFT) on the acquired baseband signal. )) processing (if necessary), applying reception processing such as filter processing, demapping, demodulation, decoding (which may include error correction decoding), MAC layer processing, RLC layer processing and PDCP layer processing, User data etc. may also be acquired.
  • FFT fast Fourier transform
  • IDFT inverse discrete Fourier transform
  • the transmitting/receiving unit 120 may perform measurements regarding the received signal.
  • the measurement unit 123 may perform Radio Resource Management (RRM) measurement, Channel State Information (CSI) measurement, etc. based on the received signal.
  • the measurement unit 123 is the receiving power (for example, Reference Signal Received Power (RSRP)), Receive Quality (eg, Reference Signal Received Quality (RSRQ), Signal To InterfERENCE PLUS NOI. SE RATIO (SINR), Signal to Noise Ratio (SNR) , signal strength (for example, Received Signal Strength Indicator (RSSI)), propagation path information (for example, CSI), etc. may be measured.
  • the measurement results may be output to the control unit 110.
  • the transmission path interface 140 transmits and receives signals (backhaul signaling) between devices included in the core network 30 (for example, network nodes providing NF), other base stations 10, etc., and provides information for the user terminal 20.
  • signals backhaul signaling
  • devices included in the core network 30 for example, network nodes providing NF, other base stations 10, etc.
  • User data user plane data
  • control plane data etc. may be acquired and transmitted.
  • the transmitting unit and receiving unit of the base station 10 in the present disclosure may be configured by at least one of the transmitting/receiving unit 120, the transmitting/receiving antenna 130, and the transmission path interface 140.
  • the control unit 110 uses a Transmission Configuration Indication (TCI) state indicated by the PDCCH that is set to at least the same symbol as the PDSCH. may also indicate the TCI state to be applied to the PDSCH.
  • TCI Transmission Configuration Indication
  • the transmitter/receiver 120 may transmit the PDSCH.
  • FIG. 10 is a diagram illustrating an example of the configuration of a user terminal according to an embodiment.
  • the user terminal 20 includes a control section 210, a transmitting/receiving section 220, and a transmitting/receiving antenna 230. Note that one or more of each of the control unit 210, the transmitting/receiving unit 220, and the transmitting/receiving antenna 230 may be provided.
  • this example mainly shows functional blocks that are characteristic of the present embodiment, and it may be assumed that the user terminal 20 also has other functional blocks necessary for wireless communication. A part 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 configured from a controller, a control circuit, etc., which will be explained based on common recognition in the technical field related to the present disclosure.
  • the control unit 210 may control signal generation, mapping, etc.
  • the control unit 210 may control transmission and reception using the transmitting/receiving unit 220 and the transmitting/receiving antenna 230, measurement, and the like.
  • the control unit 210 may generate data, control information, sequences, etc. to be transmitted as a signal, and may transfer the generated data to the transmitting/receiving unit 220.
  • the transmitting/receiving section 220 may include a baseband section 221, an RF section 222, and a measuring section 223.
  • the baseband section 221 may include a transmission processing section 2211 and a reception processing section 2212.
  • the transmitting/receiving unit 220 can be configured from a transmitter/receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measuring circuit, a transmitting/receiving circuit, etc., which are explained based on common recognition in the technical field related to the present disclosure.
  • the transmitting/receiving section 220 may be configured as an integrated transmitting/receiving section, or may be configured from a transmitting section and a receiving section.
  • the transmitting section may include a transmitting processing section 2211 and an RF section 222.
  • the reception section may include a reception processing section 2212, an RF section 222, and a measurement section 223.
  • the transmitting/receiving antenna 230 can be configured from an antenna, such as an array antenna, as described based on common recognition in the technical field related to the present disclosure.
  • the transmitter/receiver 220 may receive the above-mentioned downlink channel, synchronization signal, downlink reference signal, etc.
  • the transmitter/receiver 220 may transmit the above-mentioned uplink channel, uplink reference signal, and the like.
  • the transmitting/receiving unit 220 may form at least one of a transmitting beam and a receiving beam using digital beamforming (e.g., precoding), analog beamforming (e.g., phase rotation), or the like.
  • digital beamforming e.g., precoding
  • analog beamforming e.g., phase rotation
  • the transmission/reception unit 220 (transmission processing unit 2211) performs PDCP layer processing, RLC layer processing (e.g. RLC retransmission control), MAC layer processing (e.g. , HARQ retransmission control), etc., to generate a bit string to be transmitted.
  • RLC layer processing e.g. RLC retransmission control
  • MAC layer processing e.g. , HARQ retransmission control
  • the transmitting/receiving unit 220 (transmission processing unit 2211) performs channel encoding (which may include error correction encoding), modulation, mapping, filter processing, DFT processing (as necessary), and IFFT processing on the bit string to be transmitted. , precoding, digital-to-analog conversion, etc., and output a baseband signal.
  • DFT processing may be based on the settings of transform precoding.
  • the transmitting/receiving unit 220 transmits the above processing in order to transmit the channel using the DFT-s-OFDM waveform.
  • DFT processing may be performed as the transmission processing, or if not, DFT processing may not be performed as the transmission processing.
  • the transmitting/receiving unit 220 may perform modulation, filter processing, amplification, etc. on the baseband signal in a radio frequency band, and may transmit the signal in the radio frequency band via the transmitting/receiving antenna 230. .
  • the transmitting/receiving section 220 may perform amplification, filter processing, demodulation into a baseband signal, etc. on the radio frequency band signal received by the transmitting/receiving antenna 230.
  • the transmission/reception unit 220 (reception processing unit 2212) performs analog-to-digital conversion, FFT processing, IDFT processing (if necessary), filter processing, demapping, demodulation, and decoding (error correction) on the acquired baseband signal.
  • User data and the like may be acquired by applying reception processing such as decoding (which may include decoding), MAC layer processing, RLC layer processing, and PDCP layer processing.
  • the transmitting/receiving unit 220 may perform measurements regarding the received signal.
  • the measurement unit 223 may perform RRM measurement, CSI measurement, etc. based on the received signal.
  • the measurement unit 223 may measure received power (for example, RSRP), reception quality (for example, RSRQ, SINR, SNR), signal strength (for example, RSSI), propagation path information (for example, CSI), and the like.
  • the measurement results may be output to the control unit 210.
  • the transmitting unit and receiving unit of the user terminal 20 in the present disclosure may be configured by at least one of the transmitting/receiving unit 220 and the transmitting/receiving antenna 230.
  • the control unit 210 controls the control unit 210 based on the Transmission Configuration Indication (TCI) state indicated by the PDCCH that is set to at least the same symbol as the PDSCH.
  • TCI Transmission Configuration Indication
  • the TCI state to be applied to the PDSCH may be determined based on the PDSCH.
  • the transmitter/receiver 220 may receive the PDSCH.
  • the control unit 210 may determine the TCI state to be applied to the PDSCH based on the TCI state instructed to the PDCCH only when the number of TCI states instructed to the PDCCH is one.
  • control unit 210 may apply a specific TCI state of the two TCI states indicated on the PDCCH to the PDSCH.
  • the control unit 210 determines the specific TCI state based on upper layer signaling from the two TCI states indicated on the PDCCH, and A specific TCI state may be applied to the PDSCH.
  • each functional block may be realized using one physically or logically coupled device, or may be realized using two or more physically or logically separated devices directly or indirectly (e.g. , wired, wireless, etc.) and may be realized using a plurality of these devices.
  • the functional block may be realized by combining software with the one device or the plurality of devices.
  • functions include judgment, decision, judgement, calculation, calculation, processing, derivation, investigation, exploration, confirmation, reception, transmission, output, access, solution, selection, selection, establishment, comparison, assumption, expectation, and consideration. , broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc.
  • a functional block (configuration unit) that performs transmission may be called a transmitting unit, a transmitter, or the like. In either case, as described above, the implementation method is not particularly limited.
  • a base station, a user terminal, etc. in an embodiment of the present disclosure may function as a computer that performs processing of the wireless communication method of the present disclosure.
  • FIG. 11 is a diagram illustrating an example of the hardware configuration of a base station and a user terminal according to an embodiment.
  • the base station 10 and user terminal 20 described above may be physically configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, etc. .
  • the hardware configuration of the base station 10 and the user terminal 20 may be configured to include one or more of each device shown in the figure, or may be configured not to include some of the devices.
  • processor 1001 may be implemented using one or more chips.
  • Each function in the base station 10 and the user terminal 20 is performed by, for example, loading predetermined software (program) onto hardware such as a processor 1001 and a memory 1002, so that the processor 1001 performs calculations and communicates via the communication device 1004. This is achieved by controlling at least one of reading and writing data in the memory 1002 and storage 1003.
  • predetermined software program
  • the processor 1001 operates an operating system to control the entire computer.
  • the processor 1001 may be configured by a central processing unit (CPU) that includes interfaces with peripheral devices, a control device, an arithmetic unit, registers, and the like.
  • CPU central processing unit
  • the above-mentioned control unit 110 (210), transmitting/receiving unit 120 (220), etc. may be realized by the processor 1001.
  • the processor 1001 reads programs (program codes), software modules, data, etc. from at least one of the storage 1003 and the communication device 1004 to the memory 1002, and executes various processes in accordance with these.
  • programs program codes
  • software modules software modules
  • data etc.
  • the control unit 110 may be realized by a control program stored in the memory 1002 and operated in the processor 1001, and other functional blocks may also be realized in the same way.
  • the memory 1002 is a computer-readable recording medium, and includes at least one of Read Only Memory (ROM), Erasable Programmable ROM (EPROM), Electrically EPROM (EEPROM), Random Access Memory (RAM), and other suitable storage media. It may be composed of one. Memory 1002 may be called a register, cache, main memory, or the like.
  • the memory 1002 can store executable programs (program codes), software modules, and the like to implement a wireless communication method according to an embodiment of the present disclosure.
  • the storage 1003 is a computer-readable recording medium, such as a flexible disk, a floppy (registered trademark) disk, a magneto-optical disk (for example, a compact disk (CD-ROM), etc.), a digital versatile disk, removable disk, hard disk drive, smart card, flash memory device (e.g., card, stick, key drive), magnetic stripe, database, server, or other suitable storage medium. It may be configured by Storage 1003 may also be called an auxiliary storage device.
  • a computer-readable recording medium such as a flexible disk, a floppy (registered trademark) disk, a magneto-optical disk (for example, a compact disk (CD-ROM), etc.), a digital versatile disk, removable disk, hard disk drive, smart card, flash memory device (e.g., card, stick, key drive), magnetic stripe, database, server, or other suitable storage medium. It may be configured by Storage 1003 may also be called an auxiliary storage device.
  • the communication device 1004 is hardware (transmission/reception device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as a network device, network controller, network card, communication module, etc., for example.
  • the communication device 1004 includes, for example, a high frequency switch, a duplexer, a filter, a frequency synthesizer, etc. in order to realize at least one of frequency division duplex (FDD) and time division duplex (TDD). It may be configured to include.
  • FDD frequency division duplex
  • TDD time division duplex
  • the transmitter/receiver 120 (220) may be physically or logically separated into a transmitter 120a (220a) and a receiver 120b (220b).
  • the input device 1005 is an input device (eg, keyboard, mouse, microphone, switch, button, sensor, etc.) that accepts input from the outside.
  • the output device 1006 is an output device (for example, a display, a speaker, a light emitting diode (LED) lamp, etc.) that performs output to the outside. Note that the input device 1005 and the output device 1006 may have an integrated configuration (for example, a touch panel).
  • each device such as the processor 1001 and the memory 1002 is connected by a bus 1007 for communicating information.
  • the bus 1007 may be configured using a single bus, or may be configured using different buses for each device.
  • the base station 10 and user terminal 20 also include a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), a field programmable gate array (FPGA), etc. It may be configured to include hardware, and a part or all of each functional block may be realized using the hardware. For example, processor 1001 may be implemented using at least one of these hardwares.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • PLD programmable logic device
  • FPGA field programmable gate array
  • channel, symbol and signal may be interchanged.
  • the signal may be a message.
  • the reference signal may also be abbreviated as RS, and may be called a pilot, pilot signal, etc. depending on the applicable standard.
  • a component carrier CC may be called a cell, a frequency carrier, a carrier frequency, or the like.
  • 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 (eg, 1 ms) that does not depend on numerology.
  • the numerology may be a communication parameter applied to at least one of transmission and reception of a certain signal or channel.
  • Numerology includes, for example, subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, and radio frame configuration. , a specific filtering process performed by the transceiver in the frequency domain, a specific windowing process performed by the transceiver in the time domain, etc.
  • a slot may be composed of one or more symbols (Orthogonal Frequency Division Multiplexing (OFDM) symbols, Single Carrier Frequency Division Multiple Access (SC-FDMA) symbols, etc.) in the time domain. Furthermore, a slot may be a time unit based on numerology.
  • OFDM Orthogonal Frequency Division Multiplexing
  • SC-FDMA Single Carrier Frequency Division Multiple Access
  • a slot may include multiple mini-slots. Each minislot may be made up of one or more symbols in the time domain. Furthermore, a mini-slot may also be called a sub-slot. A minislot may be made up of fewer symbols than a slot.
  • PDSCH (or PUSCH) transmitted in time units larger than minislots may be referred to as PDSCH (PUSCH) mapping type A.
  • PDSCH (or PUSCH) transmitted using minislots may be referred to as PDSCH (PUSCH) mapping type B.
  • Radio frames, subframes, slots, minislots, and symbols all represent time units when transmitting signals. Other names may be used for the radio frame, subframe, slot, minislot, and symbol. Note that time units such as frames, subframes, slots, minislots, and symbols in the present disclosure may be read interchangeably.
  • one subframe may be called a TTI
  • a plurality of consecutive subframes may be called a TTI
  • one slot or one minislot may be called a TTI.
  • at least one of the subframe and TTI may be a subframe (1ms) in existing LTE, a period shorter than 1ms (for example, 1-13 symbols), or a period longer than 1ms. It may be.
  • the unit representing the TTI may be called a slot, minislot, etc. instead of a subframe.
  • TTI refers to, for example, the minimum time unit for scheduling in wireless communication.
  • a base station performs scheduling to allocate radio resources (frequency bandwidth, transmission power, etc. that can be used by each user terminal) to each user terminal on a TTI basis.
  • radio resources frequency bandwidth, transmission power, etc. that can be used by each user terminal
  • the TTI may be a transmission time unit of a channel-coded data packet (transport block), a code block, a codeword, etc., or may be a processing unit of scheduling, link adaptation, etc. Note that when a TTI is given, the time interval (for example, the number of symbols) to which transport blocks, code blocks, code words, etc. are actually mapped may be shorter than the TTI.
  • one slot or one minislot is called a TTI
  • one or more TTIs may be the minimum time unit for scheduling.
  • the number of slots (minislot number) that constitutes the minimum time unit of the scheduling may be controlled.
  • a TTI having a time length of 1 ms may be called a normal TTI (TTI in 3GPP Rel. 8-12), normal TTI, long TTI, normal subframe, normal subframe, long subframe, slot, etc.
  • TTI TTI in 3GPP Rel. 8-12
  • normal TTI long TTI
  • normal subframe normal subframe
  • long subframe slot
  • TTI that is shorter than the normal TTI may be referred to as an abbreviated TTI, short TTI, partial or fractional TTI, shortened subframe, short subframe, minislot, subslot, slot, etc.
  • long TTI for example, normal TTI, subframe, etc.
  • short TTI for example, short TTI, etc. It may also be read as a TTI having the above TTI length.
  • a resource block is a resource allocation unit in the time domain and frequency domain, and may include one or more continuous subcarriers (subcarriers) in the frequency domain.
  • the number of subcarriers included in an RB may be the same regardless of the numerology, and may be 12, for example.
  • the number of subcarriers included in an RB may be determined based on numerology.
  • an RB may include one or more symbols in the time domain, and may have a length of one slot, one minislot, one subframe, or one TTI.
  • One TTI, one subframe, etc. may each be composed of one or more resource blocks.
  • one or more RBs include a physical resource block (Physical RB (PRB)), a sub-carrier group (SCG), a resource element group (REG), a PRB pair, and an RB. They may also be called pairs.
  • PRB Physical RB
  • SCG sub-carrier group
  • REG resource element group
  • PRB pair an RB. They may also be called pairs.
  • a resource block may be configured by one or more resource elements (REs).
  • REs resource elements
  • 1 RE may be a radio resource region of 1 subcarrier and 1 symbol.
  • Bandwidth Part (also called partial bandwidth, etc.) refers to a subset of consecutive common resource blocks (RB) for a certain numerology in a certain carrier.
  • the common RB may be specified by an RB index based on a common reference point of the carrier.
  • PRBs may be defined in a BWP and numbered within that BWP.
  • BWP may include UL BWP (BWP for UL) and DL BWP (BWP for DL).
  • BWP UL BWP
  • BWP for DL DL BWP
  • One or more BWPs may be configured within one carrier for a UE.
  • 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 of the active BWP.
  • “cell”, “carrier”, etc. in the present disclosure may be replaced with "BWP”.
  • the structures of the radio frame, subframe, slot, minislot, symbol, etc. 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 symbols included in an RB The number of subcarriers, the number of symbols within a TTI, the symbol length, the cyclic prefix (CP) length, and other configurations can be changed in various ways.
  • radio resources may be indicated by a predetermined index.
  • data, instructions, commands, information, signals, bits, symbols, chips, etc. which may be referred to throughout the above description, may refer to voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any of these. It may also be represented by a combination of
  • information, signals, etc. may be output from the upper layer to the lower layer and from the lower layer to at least one of the upper layer.
  • Information, signals, etc. may be input and output via multiple network nodes.
  • Input/output information, signals, etc. may be stored in a specific location (for example, memory) or may be managed using a management table. Information, signals, etc. that are input and output can be overwritten, updated, or added. The output information, signals, etc. may be deleted. The input information, signals, etc. may be transmitted to other devices.
  • 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 physical layer signaling (e.g., Downlink Control Information (DCI), Uplink Control Information (UCI)), upper 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 thereof It may be carried out by physical layer signaling (e.g., Downlink Control Information (DCI), Uplink Control Information (UCI)), upper 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 thereof It may be carried out by
  • the physical layer signaling may also be called Layer 1/Layer 2 (L1/L2) control information (L1/L2 control signal), L1 control information (L1 control signal), etc.
  • RRC signaling may be called an RRC message, and may be, for example, an RRC Connection Setup message, an RRC Connection Reconfiguration message, or the like.
  • MAC signaling may be notified using, for example, a MAC Control Element (CE).
  • CE MAC Control Element
  • notification of prescribed information is not limited to explicit notification, but may be made implicitly (for example, by not notifying the prescribed information or by providing other information) (by notification).
  • the determination may be made by a value expressed by 1 bit (0 or 1), or by a boolean value expressed by true or false. , may be performed by numerical comparison (for example, comparison with a predetermined value).
  • Software includes instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, whether referred to as software, firmware, middleware, microcode, hardware description language, or by any other name. , should be broadly construed to mean an application, software application, software package, routine, subroutine, object, executable, thread of execution, procedure, function, etc.
  • software, instructions, information, etc. may be sent and received via a transmission medium.
  • a transmission medium such as coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), etc.
  • wired technology such as coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), etc.
  • wireless technology such as infrared, microwave, etc.
  • Network may refer to devices (eg, base stations) included in the network.
  • precoding "precoding weight”
  • QCL quadsi-co-location
  • TCI state "Transmission Configuration Indication state
  • space space
  • spatial relation "spatial domain filter”
  • transmission power "phase rotation”
  • antenna port "antenna port group”
  • layer "number of layers”
  • Terms such as “rank”, “resource”, “resource set”, “resource group”, “beam”, “beam width”, “beam angle”, “antenna”, “antenna element”, and “panel” are interchangeable.
  • Base Station BS
  • Wireless base station Wireless base station
  • Fixed station NodeB
  • eNB eNodeB
  • gNB gNodeB
  • Access point "Transmission Point (TP)”, “Reception Point (RP)”, “Transmission/Reception Point (TRP)”, “Panel”
  • cell “sector,” “cell group,” “carrier,” “component carrier,” and the like
  • a base station is sometimes referred to by terms such as macrocell, small cell, femtocell, and picocell.
  • a base station can accommodate one or more (eg, three) cells. If a base station accommodates multiple cells, the overall coverage area of the base station can be partitioned into multiple smaller areas, and each smaller area is connected to a base station subsystem (e.g., an indoor small base station (Remote Radio Communication services can also be provided by the Head (RRH)).
  • a base station subsystem e.g., an indoor small base station (Remote Radio Communication services can also be provided by the Head (RRH)
  • RRH Remote Radio Communication services
  • the term “cell” or “sector” refers to part or all of the coverage area of a base station and/or base station subsystem that provides communication services in this coverage.
  • a base station transmitting information to a terminal may be interchanged with the base station instructing the terminal to control/operate based on the information.
  • MS Mobile Station
  • UE User Equipment
  • a mobile station is 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 a base station and a mobile station may be called a transmitting device, a receiving device, a wireless communication device, etc.
  • a transmitting device may be called a transmitting device, a receiving device, a wireless communication device, etc.
  • the base station and the mobile station may be a device mounted on a moving object, the moving object itself, or the like.
  • the moving body refers to a movable object, and the moving speed is arbitrary, and naturally includes cases where the moving body is stopped.
  • the mobile objects include, for example, vehicles, transport vehicles, automobiles, motorcycles, bicycles, connected cars, excavators, bulldozers, wheel loaders, dump trucks, forklifts, trains, buses, carts, rickshaws, and ships (ships and other watercraft). , including, but not limited to, airplanes, rockets, artificial satellites, drones, multicopters, quadcopters, balloons, and items mounted thereon.
  • the mobile object may be a mobile object that autonomously travels based on a travel command.
  • the moving object may be a vehicle (for example, a car, an airplane, etc.), an unmanned moving object (for example, a drone, a self-driving car, etc.), or a robot (manned or unmanned). ).
  • a vehicle for example, a car, an airplane, etc.
  • an unmanned moving object for example, a drone, a self-driving car, etc.
  • a robot manned or unmanned.
  • at least one of the base station and the mobile station includes 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. 12 is a diagram illustrating an example of a vehicle according to an 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 (current sensor 50, (including a rotation speed 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 section 59, and a communication module 60. Be prepared.
  • the drive unit 41 is composed of, for example, at least one of an engine, a motor, and a hybrid of an engine and a motor.
  • the steering unit 42 includes at least a steering wheel (also referred to as a steering wheel), 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 includes a microprocessor 61, a memory (ROM, RAM) 62, and a communication port (for example, an input/output (IO) port) 63. Signals from various sensors 50-58 provided in the vehicle are input to the electronic control unit 49.
  • the electronic control section 49 may be called an electronic control unit (ECU).
  • the signals from the various sensors 50 to 58 include a current signal from the current sensor 50 that senses the current of the motor, a rotation speed signal of the front wheel 46/rear wheel 47 obtained by the rotation speed sensor 51, and a signal obtained by the air pressure sensor 52.
  • air pressure signals of the front wheels 46/rear wheels 47 a vehicle speed signal acquired by the vehicle speed sensor 53, an acceleration signal acquired by the acceleration sensor 54, a depression amount signal of the accelerator pedal 43 acquired by the accelerator pedal sensor 55, and a brake pedal sensor.
  • 56 a shift lever 45 operation signal obtained by the shift lever sensor 57, and an object detection sensor 58 for detecting obstacles, vehicles, pedestrians, etc. There are signals etc.
  • the information service department 59 includes various devices such as car navigation systems, audio systems, speakers, displays, televisions, and radios that provide (output) various information such as driving information, traffic information, and entertainment information, and these devices. It consists of one or more ECUs that control the The information service unit 59 provides various information/services (for example, multimedia information/multimedia services) to the occupants of the vehicle 40 using information acquired from an external device via the communication module 60 or the like.
  • various information/services for example, multimedia information/multimedia services
  • the information service unit 59 may include an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, a touch panel, etc.) that accepts input from the outside, and an output device that performs output to the outside (for example, display, speaker, LED lamp, touch panel, etc.).
  • an input device for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, a touch panel, etc.
  • an output device that performs output to the outside (for example, display, speaker, LED lamp, touch panel, etc.).
  • the driving support system unit 64 includes millimeter wave radar, Light Detection and Ranging (LiDAR), a camera, a positioning locator (for example, Global Navigation Satellite System (GNSS), etc.), and map information (for example, High Definition (HD)). maps, autonomous vehicle (AV) maps, etc.), gyro systems (e.g., inertial measurement units (IMUs), inertial navigation systems (INS), etc.), artificial intelligence ( Artificial Intelligence (AI) chips, AI processors, and other devices that provide functions to prevent accidents and reduce the driver's driving burden, as well as one or more devices that control these devices. It consists of an ECU. Further, the driving support system section 64 transmits and receives various information via the communication module 60, and realizes a driving support function or an automatic driving function.
  • LiDAR Light Detection and Ranging
  • GNSS Global Navigation Satellite System
  • HD High Definition
  • maps for example, autonomous vehicle (AV) maps, etc.
  • gyro systems e.g.,
  • 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 communicates via the communication port 63 with 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, which are included in the vehicle 40.
  • Data (information) is transmitted and received between the axle 48, the microprocessor 61 and memory (ROM, RAM) 62 in the electronic control unit 49, and various sensors 50-58.
  • 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, various information is transmitted and received with an external device via wireless communication.
  • the communication module 60 may be located either inside or outside the electronic control unit 49.
  • the external device may be, for example, the base station 10, user terminal 20, etc. described above.
  • the communication module 60 may be, for example, at least one of the base station 10 and the user terminal 20 described above (it may function as at least one of the base station 10 and the user terminal 20).
  • the communication module 60 receives signals from the various sensors 50 to 58 described above that are input to the electronic control unit 49, information obtained based on the signals, and input from the outside (user) obtained via the information service unit 59. At least one of the information based on the information may be transmitted to an external device via wireless communication.
  • the electronic control unit 49, various sensors 50-58, information service unit 59, etc. may be called an input unit that receives input.
  • the PUSCH transmitted by the communication module 60 may include information based on the above input.
  • the communication module 60 receives various information (traffic information, signal information, inter-vehicle information, etc.) transmitted from an external device, and displays it on the information service section 59 provided in the vehicle.
  • the information service unit 59 is an output unit that outputs information (for example, outputs information to devices such as a display and a speaker based on the PDSCH (or data/information decoded from the PDSCH) received by the communication module 60). may be called.
  • the communication module 60 also stores various information received from external devices into a memory 62 that can be used by the microprocessor 61. Based on the information stored in the memory 62, the microprocessor 61 controls the drive unit 41, steering unit 42, accelerator pedal 43, brake pedal 44, shift lever 45, left and right front wheels 46, and left and right rear wheels provided in the vehicle 40. 47, axle 48, various sensors 50-58, etc. may be controlled.
  • the base station in the present disclosure may be replaced by a user terminal.
  • communication between a base station and a user terminal is replaced with communication between multiple user terminals (for example, it may be called Device-to-Device (D2D), Vehicle-to-Everything (V2X), etc.).
  • D2D Device-to-Device
  • V2X Vehicle-to-Everything
  • each aspect/embodiment of the present disclosure may be applied.
  • the user terminal 20 may have the functions that the base station 10 described above has.
  • words such as "uplink” and “downlink” may be replaced with words corresponding to inter-terminal communication (for example, "sidelink”).
  • uplink channels, downlink channels, etc. may be replaced with sidelink channels.
  • the user terminal in the present disclosure may be replaced with a base station.
  • the base station 10 may have the functions that the user terminal 20 described above has.
  • the operations performed by the base station may be performed by its upper node in some cases.
  • various operations performed for communication with a terminal may be performed by the base station, one or more network nodes other than the base station (e.g. It is clear that this can be performed by a Mobility Management Entity (MME), a Serving-Gateway (S-GW), etc. (though not limited thereto), 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 may be switched and used in accordance with execution. Further, the order of the processing procedures, sequences, flowcharts, etc. of each aspect/embodiment described in this disclosure may be changed as long as there is no contradiction. For example, the methods described in this disclosure use an example order to present elements of the various steps and are not limited to the particular order presented.
  • LTE Long Term Evolution
  • LTE-A LTE-Advanced
  • LTE-B LTE-Beyond
  • SUPER 3G IMT-Advanced
  • 4G 4th generation mobile communication system
  • 5G 5th generation mobile communication system
  • 6G 6th generation mobile communication system
  • xG x is an integer or decimal number, for example
  • Future Radio Access FAA
  • RAT New-Radio Access Technology
  • NR New Radio
  • NX New radio access
  • FX Future generation radio access
  • GSM registered trademark
  • CDMA2000 Code Division Multiple Access
  • UMB Ultra Mobile Broadband
  • IEEE 802 .11 Wi-Fi (registered trademark)
  • IEEE 802.16 WiMAX (registered trademark)
  • IEEE 802.20 Ultra-WideBand (UWB), Bluetooth (registered trademark), and other appropriate wireless communication methods.
  • the present invention may be applied to systems to be used, next-generation systems expanded, modified,
  • the phrase “based on” does not mean “based solely on” unless explicitly stated otherwise. In other words, the phrase “based on” means both “based only on” and “based at least on.”
  • any reference to elements using the designations "first,” “second,” etc. does not generally limit the amount or order of those elements. These designations may be used in this disclosure as a convenient way to distinguish between two or more elements. Thus, reference to a first and second element does not imply that only two elements may be employed or that the first element must precede the second element in any way.
  • determining may encompass a wide variety of actions. For example, “judgment” can mean judging, calculating, computing, processing, deriving, investigating, looking up, search, inquiry ( For example, searching in a table, database, or other data structure), ascertaining, etc. may be considered to be “determining.”
  • judgment (decision) includes receiving (e.g., receiving information), transmitting (e.g., sending information), input (input), output (output), access ( may be considered to be “determining”, such as accessing data in memory (eg, accessing data in memory).
  • judgment is considered to mean “judging” resolving, selecting, choosing, establishing, comparing, etc. Good too.
  • judgment (decision) may be considered to be “judgment (decision)” of some action.
  • the "maximum transmit power" described in this disclosure may mean the maximum value of transmit power, the nominal maximum transmit power (the nominal UE maximum transmit power), or the rated maximum transmit power (the It may also mean rated UE maximum transmit power).
  • connection refers to any connection or coupling, direct or indirect, between two or more elements.
  • the coupling or connection between elements may be physical, logical, or a combination thereof. For example, "connection” may be replaced with "access.”
  • microwave when two elements are connected, they may be connected using one or more electrical wires, cables, printed electrical connections, etc., as well as in the radio frequency domain, microwave can be considered to be “connected” or “coupled” to each other using electromagnetic energy having wavelengths in the light (both visible and invisible) range.
  • a and B are different may mean “A and B are different from each other.” Note that the term may also mean that "A and B are each different from C”. Terms such as “separate” and “coupled” may also be interpreted similarly to “different.”
  • the i-th (i is any integer), not only in the elementary, comparative, and superlative, but also interchangeably (for example, "the highest” can be interpreted as “the i-th highest”). may be read interchangeably).

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

Abstract

La présente divulgation concerne, selon un aspect, un terminal qui comprend une unité de commande et une unité de réception. Lorsque des informations de réglage se rapportant à un canal de commande de liaison descendante physique (PDCCH) d'un réseau à fréquence unique (SFN) sont réglées à un schéma spécifique, des informations de réglage se rapportant à un canal partagé de liaison descendante physique (PDSCH) du réseau SFN ne sont pas définies et une période de temps à partir d'informations de commande de liaison descendante, pour planifier le canal PDSCH, au canal PDSCH est inférieure à une valeur de seuil spécifique, l'unité de commande détermine un état d'indication de configuration de transmission (TCI) à appliquer au canal PDSCH sur la base d'un état d'indication TCI ordonné à un canal PDCCH réglé à au moins au même symbole que celui du canal PDSCH. L'unité de réception reçoit le canal PDSCH. Selon un aspect de la présente divulgation, une opération se rapportant à un état d'indication TCI/une supposition de QCL peut être commandée de manière appropriée.
PCT/JP2023/026958 2022-08-25 2023-07-24 Terminal, procédé de communication sans fil et station de base WO2024042954A1 (fr)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020170450A1 (fr) * 2019-02-22 2020-08-27 株式会社Ｎｔｔドコモ Terminal utilisateur et procédé de communication sans fil
US20220209904A1 (en) * 2020-12-30 2022-06-30 Samsung Electronics Co., Ltd. Method and apparatus for determining processing time of ue in wireless communication system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020170450A1 (fr) * 2019-02-22 2020-08-27 株式会社Ｎｔｔドコモ Terminal utilisateur et procédé de communication sans fil
US20220209904A1 (en) * 2020-12-30 2022-06-30 Samsung Electronics Co., Ltd. Method and apparatus for determining processing time of ue in wireless communication system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"3rd Generation Partnership Project; Technical Specification Group Radio Access Network; NR; Physical layer procedures for data (Release 17)", 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. V17.2.0, 23 June 2022 (2022-06-23), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, pages 1 - 229, XP052183196 *

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