WO2022009417A1 - 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
WO2022009417A1
WO2022009417A1 PCT/JP2020/027015 JP2020027015W WO2022009417A1 WO 2022009417 A1 WO2022009417 A1 WO 2022009417A1 JP 2020027015 W JP2020027015 W JP 2020027015W WO 2022009417 A1 WO2022009417 A1 WO 2022009417A1
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csi
resource
information
mac
field
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PCT/JP2020/027015
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English (en)
Japanese (ja)
Inventor
祐輝 松村
聡 永田
ジン ワン
ウェイチー スン
ラン チン
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株式会社Ｎｔｔドコモ
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Priority to PCT/JP2020/027015 priority Critical patent/WO2022009417A1/fr
Priority to JP2022534870A priority patent/JPWO2022009417A1/ja
Publication of WO2022009417A1 publication Critical patent/WO2022009417A1/fr

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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

Definitions

  • This disclosure relates to terminals, wireless communication methods and base stations in next-generation mobile communication systems.
  • LTE Long Term Evolution
  • UMTS Universal Mobile Telecommunications System
  • 3GPP Rel.10-14 LTE-Advanced (3GPP Rel.10-14) has been specified for the purpose of further increasing the capacity and sophistication of LTE (Third Generation Partnership Project (3GPP) Release (Rel.) 8, 9).
  • a successor system to LTE for example, 5th generation mobile communication system (5G), 5G + (plus), 6th generation mobile communication system (6G), New Radio (NR), 3GPP Rel.15 or later, etc.
  • 5G 5th generation mobile communication system
  • 6G 6th generation mobile communication system
  • NR New Radio
  • UE User Equipment
  • QCL Quad-Co-Location
  • P-CSI-RS periodic channel state information-reference signals
  • one of the purposes of the present disclosure is to provide terminals, wireless communication methods, and base stations that efficiently use P-CSI-RS resources.
  • the terminal is a receiver that receives one or more information elements for setting a periodic channel state information-reference signal (CSI-RS), and a medium access control that includes one or more bits.
  • CSI-RS periodic channel state information-reference signal
  • -It has a control unit that controls reception of a control element (MAC CE), the one or more bits correspond to the one or more information elements, and each of the one or more bits corresponds to the corresponding information.
  • MAC CE control element
  • P-CSI-RS resources can be efficiently used.
  • 1A and 1B are diagrams showing an example of MAC CE of option 1 of the first embodiment.
  • 2A and 2B are diagrams showing an example of MAC CE of option 2 of the first embodiment.
  • FIG. 3 is a diagram showing an example of MAC CE as a modification of the first embodiment.
  • FIG. 4 is a diagram showing an example of MAC CE of another modification of the first embodiment.
  • 5A and 5B are diagrams showing an example of MAC CE of option 1 of the second embodiment.
  • 6A and 6B are diagrams showing an example of MAC CE of option 2 of the second embodiment.
  • 7A to 7C are diagrams showing an example of MAC CE of options 3 to 5 of the second embodiment.
  • 8A and 8B are diagrams showing an example of MAC CE of option 1 of the third embodiment.
  • FIGS. 9A and 9B are diagrams showing an example of MAC CE of option 2 of the third embodiment.
  • 10A and 10B are diagrams showing an example of MAC CE as a modification of the third embodiment.
  • 11A and 11B are diagrams showing an example of MAC CE of another modification of the third embodiment.
  • 12A and 12B are diagrams showing an example of the operation of a plurality of UEs.
  • 13A and 13B are diagrams showing an example of scheduling limitation.
  • FIG. 14 is a diagram showing an example of a schematic configuration of a wireless communication system according to an embodiment.
  • FIG. 15 is a diagram showing an example of the configuration of a base station according to an embodiment.
  • FIG. 16 is a diagram showing an example of the configuration of a user terminal according to an embodiment.
  • FIG. 17 is a diagram showing an example of the hardware configuration of the base station and the user terminal according to the embodiment.
  • reception processing for example, reception, demapping, demodulation, etc.
  • transmission processing e.g., at least one of transmission, mapping, precoding, modulation, and coding
  • the TCI state may represent what applies to the downlink signal / channel.
  • the equivalent of the TCI state applied to the uplink signal / channel may be expressed as a spatial relation.
  • the TCI state is information related to signal / channel pseudo-collocation (Quasi-Co-Location (QCL)), and may be called spatial reception parameters, spatial relation information, or the like.
  • QCL Quality of Service
  • the TCI state may be set in the UE per channel or per signal.
  • QCL is an index showing the statistical properties of signals / channels. For example, when one signal / channel and another signal / channel have a QCL relationship, Doppler shift, Doppler spread, and average delay are performed between these different signals / channels. ), Delay spread, and spatial parameter (for example, spatial Rx parameter) can be assumed to be the same (QCL for at least one of these). You may.
  • the spatial reception parameter may correspond to the received beam of the UE (for example, the received analog beam), or the beam may be specified based on the spatial QCL.
  • the QCL (or at least one element of the QCL) in the present disclosure may be read as sQCL (spatial QCL).
  • QCL types A plurality of types (QCL types) may be specified for the QCL.
  • QCL types AD QCL types with different parameters (or parameter sets) that can be assumed to be the same may be provided, and the parameters (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 parameter.
  • QCL-A Doppler shift, Doppler spread, average delay and delay spread
  • -QCL type B QCL type B
  • QCL type C QCL type C
  • QCL-D Spatial reception parameter.
  • the UE assumes that one control resource set (Control Resource Set (CORESET)) has a specific QCL (eg, QCL type D) relationship with another CORESET, channel or reference signal. It may be called a QCL assumption.
  • CORESET Control Resource Set
  • QCL QCL type D
  • the UE may determine at least one of the transmit beam (Tx beam) and receive beam (Rx beam) of the signal / channel based on the TCI state of the signal / channel or the QCL assumption.
  • the TCI state may be, for example, information about the QCL of the target channel (in other words, the reference signal for the channel (Reference Signal (RS))) and another signal (for example, another RS). ..
  • the TCI state may be set (instructed) by higher 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
  • the channels for which the TCI state or spatial relationship is set are, for example, a downlink shared channel (Physical Downlink Shared Channel (PDSCH)), a downlink control channel (Physical Downlink Control Channel (PDCCH)), and an uplink shared channel (Physical Uplink Shared). It may be at least one of a Channel (PUSCH)) and an uplink control channel (Physical Uplink Control Channel (PUCCH)).
  • PDSCH Physical Downlink Shared Channel
  • PDCH Downlink Control Channel
  • PUSCH Physical Uplink Control Channel
  • PUCCH Physical Uplink Control Channel
  • the RS having a QCL relationship with the channel is, for example, a synchronization signal block (Synchronization Signal Block (SSB)), a channel state information reference signal (Channel State Information Reference Signal (CSI-RS)), and a reference signal for measurement (Sounding). It may be at least one of Reference Signal (SRS)), CSI-RS for tracking (also referred to as Tracking Reference Signal (TRS)), and reference signal for QCL detection (also referred to as QRS).
  • SRS Reference Signal
  • TRS Tracking Reference Signal
  • QRS reference signal for QCL detection
  • the SSB is a signal block including at least one of a primary synchronization signal (Primary Synchronization Signal (PSS)), a secondary synchronization signal (Secondary Synchronization Signal (SSS)), and a broadcast channel (Physical Broadcast Channel (PBCH)).
  • PSS Primary Synchronization Signal
  • SSS Secondary Synchronization Signal
  • PBCH Physical Broadcast Channel
  • the SSB may be referred to as an SS / PBCH block.
  • the RS of the QCL type X in the TCI state may mean an RS having a relationship between a certain channel / signal (DMRS) and the QCL type X, and this RS is called the QCL source of the QCL type X in the TCI state. You may.
  • DMRS channel / signal
  • the path loss PL b, f, c (q d ) [dB] in the transmission power control of PUSCH, PUCCH, and SRS is a reference signal (RS,) for the downlink BWP associated with the active UL BWP b of the carrier f of the serving cell c. using the index q d pathloss reference RS (PathlossReferenceRS)) is computed by the UE.
  • the path loss reference RS, path loss (PL) -RS, index q d , RS used for path loss calculation, and RS resource used for path loss calculation may be read as each other.
  • calculations, estimates, measurements, and tracks may be read interchangeably.
  • the path loss measurement based on L1-RSRP may be applied. Even if the upper layer filter RSRP is used for path loss measurement and L1-RSRP is used for path loss measurement before the upper layer filter RSRP is applied at the available timing after MAC CE for path loss RS update. good. At the available timing after the MAC CE for updating the path loss RS, the upper layer filter RSRP may be used for the path loss measurement, and the upper layer filter RSRP of the previous path loss RS may be used before that timing. .. Rel. Similar to the operation of 15, the upper layer filter RSRP is used for the path loss measurement, and the UE may track all the path loss RS candidates set by the RRC.
  • the maximum number of path loss RSs that can be set by the RRC may depend on the UE capability. When the maximum number of path loss RSs that can be set by RRC is X, path loss RS candidates of X or less may be set by RRC, and path loss RS may be selected by MAC CE from the set path loss RS candidates.
  • the maximum number of path loss RSs that can be set by RRC may be 4, 8, 16, 64, or the like.
  • the upper layer filter RSRP, the filtered RSRP, and the layer 3 filter RSRP may be read as each other.
  • DL DCI (PDSCH) is set both when the TCI information in DCI (upper layer parameter TCI-PresentInDCI) is set to "enabled” and when the TCI information in DCI is not set.
  • TCI-PresentInDCI TCI information in DCI
  • Non-cross-carrier scheduling if the time offset between the receipt of the scheduled DCI) and the corresponding PDSCH (PDSCH scheduled by the DCI) is less than the threshold (timeDurationForQCL) (applicable condition, first condition).
  • the TCI state (default TCI state) of the PDSCH may be the TCI state of the lowest CORESET ID in the latest slot in the active DL BWP of the CC (of the specific UL signal). Otherwise, the PDSCH TCI state (default TCI state) may be the TCI state of the PDSCH's lowest TCI state ID in the active DL BWP of the scheduled CC.
  • an individual MAC CE of a MAC CE for activation / deactivation related to PUCCH space and a MAC CE for activation / deactivation related to SRS space is required.
  • the PUSCH spatial relationship follows the SRS spatial relationship.
  • 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 for PUCCH and PL-RS are not set in FR2 (applicable condition, second condition), the spatial relationship for PUCCH and the default assumption of PL-RS (default spatial relationship and default PL-RS). Is applied. If both the spatial relationship and PL-RS for SRS (SRS resource for SRS or SRS resource corresponding to SRI in DCI format 0_1 for scheduling PUSCH) are not set in FR2 (applicable condition, second condition). Spatial relationships and PL-RS default assumptions (default spatial relationships and default PL-RS) apply to PUSCH and SRS scheduled by DCI format 0_1.
  • the default spatial relationship and default PL-RS may be the TCI state or QCL assumption of the CORESET with the lowest CORESET ID in the active DL BWP. .. If CORESET is not set in the active DL BWP on the CC, the default spatial relationship and the 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 PUSCHs scheduled by DCI format 0_0 follows the spatial relationship of PUCCH resources 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 the PUCCHs are not transmitted on the SCells.
  • the condition to which the default spatial relationship for SRS / default PL-RS is applied may include that the default beam path loss enablement information element for SRS (upper layer parameter enableDefaultBeamPlForSRS) is effectively set.
  • the condition to which the default spatial relationship for PUCCH / default PL-RS is applied may include that the default beam path loss enablement information element for PUCCH (upper layer parameter enableDefaultBeamPlForPUCCH) is effectively set.
  • the condition to which the default spatial relationship / default PL-RS for PUSCH scheduled by DCI format 0_0 is applied is that the default beam path loss enablement information element for PUSCH scheduled by DCI format 0_0 (upper layer parameter enableDefaultBeamPlForPUSCH0_0) is validly set. May include being done.
  • the above thresholds are the time duration for QCL, "timeDurationForQCL”, “Threshold”, “Threshold for offset between a DCI indicating a TCI state and a PDSCH scheduled by the DCI", “Threshold-Sched-Offset", schedule. It may be called an offset threshold value, a scheduling offset threshold value, or the like.
  • the UE measures the channel state using the reference signal (or the resource for the reference signal) and feeds back (reports) the channel state information (CSI) to the network (eg, the base station). )do.
  • the UE is a channel state information reference signal (Channel State Information Reference Signal (CSI-RS)), a synchronization signal / broadcast channel (Synchronization Signal / Physical Broadcast Channel (SS / PBCH)) block, a synchronization signal (Synchronization Signal (SS)).
  • CSI-RS Channel State Information Reference Signal
  • SS Physical Broadcast Channel
  • SS Synchronization Signal
  • DMRS DeModulation Reference Signal
  • CSI-RS resources include non-zero power (Non Zero Power (NZP)) CSI-RS resources, zero power (Zero Power (ZP)) CSI-RS resources, and CSI Interference Measurement (CSI-IM) resources. At least one may be included.
  • NZP Non Zero Power
  • ZP Zero Power
  • ZP Zero Power
  • CSI-IM CSI Interference Measurement
  • the resource for measuring the signal component for CSI may be referred to as a signal measurement resource (Signal Measurement Resource (SMR)) or a channel measurement resource (Channel Measurement Resource (CMR)).
  • SMR Signal Measurement Resource
  • CMR Channel Measurement Resource
  • SMR may include, for example, NZP CSI-RS resources for channel measurement, SSB, and the like.
  • the resource for measuring the interference component for CSI may be referred to as an interference measurement resource (IMR).
  • the IMR may include, for example, at least one of the NZP CSI-RS resource, SSB, ZP CSI-RS resource and CSI-IM resource for interference measurement.
  • the SS / PBCH block is a block containing a synchronization signal (for example, a primary synchronization signal (Primary Synchronization Signal (PSS)), a secondary synchronization signal (Secondary Synchronization Signal (SSS))) and a PBCH (and a corresponding DMRS), and is an SS. It may be called a block (SSB) or the like.
  • a synchronization signal for example, a primary synchronization signal (Primary Synchronization Signal (PSS)), a secondary synchronization signal (Secondary Synchronization Signal (SSS))
  • SSS Secondary Synchronization Signal
  • SSB block
  • the CSI includes a channel quality indicator (Channel Quality Indicator (CQI)), a precoding matrix indicator (Precoding Matrix Indicator (PMI)), a CSI-RS resource indicator (CSI-RS Resource Indicator (CRI)), and SS.
  • CQI Channel Quality Indicator
  • PMI Precoding Matrix Indicator
  • CRI CSI-RS Resource Indicator
  • SS / PBCH block resource indicator (SS / PBCH Block Resource Indicator (SSBRI)), layer indicator (Layer Indicator (LI)), rank indicator (Rank Indicator (RI)), L1-RSRP (reference signal reception in layer 1) Even if it includes at least one such as power (Layer 1 Reference Signal Received Power), L1-RSRQ (Reference Signal Received Quality), L1-SINR (Signal to Interference plus Noise Ratio), L1-SNR (Signal to Noise Ratio), etc. good.
  • CSI may have multiple parts.
  • CSI part 1 may include information with a relatively small number of bits (eg, RI).
  • the CSI part 2 may include information having a relatively large number of bits (for example, CQI), such as information determined based on the CSI part 1.
  • CSI may also be classified into several CSI types.
  • the information type, size, etc. to be reported may differ depending on the CSI type.
  • the CSI type also called type I CSI, CSI for single beam, etc.
  • a type also called a type II CSI, a multi-beam CSI, etc.
  • the usage of the CSI type is not limited to this.
  • CSI feedback methods include periodic CSI (Periodic CSI (P-CSI)) reporting, aperiodic CSI (Aperiodic CSI (A-CSI, AP-CSI)) reporting, and semi-persistent CSI (Semi-). Persistent CSI (SP-CSI)) reports are being considered.
  • the UE may be notified of CSI measurement setting information using higher layer signaling, physical layer signaling, or a combination thereof.
  • the upper layer signaling may be, for example, any one of Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information, or a combination thereof.
  • RRC Radio Resource Control
  • MAC Medium Access Control
  • MAC CE MAC Control Element
  • PDU MAC Protocol Data Unit
  • the broadcast information includes, for example, a master information block (Master Information Block (MIB)), a system information block (System Information Block (SIB)), a minimum system information (Remaining Minimum System Information (RMSI)), and other system information ( Other System Information (OSI)) may 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).
  • DCI downlink control information
  • the CSI measurement setting information may be set using, for example, the RRC information element "CSI-MeasConfig".
  • the CSI measurement setting information may include CSI resource setting information (RRC information element "CSI-ResourceConfig"), CSI report setting information (RRC information element "CSI-ReportConfig”), and the like.
  • the CSI resource configuration information relates to the resource for CSI measurement
  • the CSI reporting configuration information relates to how the UE performs CSI reporting.
  • the RRC information element (or RRC parameter) related to CSI report setting and CSI resource setting will be described.
  • CSI report setting information (“CSI-ReportConfig”) includes resource information for channel measurement (“resourcesForChannelMeasurement”).
  • the CSI report setting information includes resource information for interference measurement (for example, NZP CSI-RS resource information for interference measurement (“nzp-CSI-RS-ResourcesForInterference”)) and CSI-IM resource information for interference measurement (“csi-IM”). -ResourcesForInterference "), etc.) may also be included. These resource information correspond to the ID (Identifier) (“CSI-ResourceConfigId”) of the CSI resource setting information.
  • the ID of the CSI resource setting information corresponding to each resource information may be one or a plurality of the same value, or may be different values. ..
  • the CSI resource setting information (“CSI-ResourceConfig”) may include a CSI resource setting information ID, CSI-RS resource set list information (“csi-RS-ResourceSetList”), a resource type (“resourceType”), and the like.
  • the CSI-RS resource set list includes NZP CSI-RS and SSB information for measurement (“nzp-CSI-RS-SSB”) and CSI-IM resource set list information (“csi-IM-ResourceSetList”). , At least one of them may be included.
  • the resource type represents the behavior of the time domain of this resource setting, and can be set to "aperiodic", “semi-persistent", or “periodic”.
  • the corresponding CSI-RS may be referred to as A-CSI-RS (AP-CSI-RS), SP-CSI-RS, P-CSI-RS.
  • the channel measurement resource may be used for calculation of, for example, CQI, PMI, L1-RSRP, and the like. Further, the resource for interference measurement may be used for calculation of L1-SINR, L1-SNR, L1-RSRQ, and other indicators related to interference.
  • one MAC CE can update the beam indexes (TCI states) of multiple CCs.
  • the UE can set up to two applicable CC lists (eg, applicable-CC-list) by RRC.
  • the two applicable CC lists may correspond to an in-band CA in FR1 and an in-band CA in FR2, respectively.
  • PDCCH TCI status activation MAC CE activates the TCI status associated with the same CORESET ID on all BWP / CCs in the applicable CC list.
  • Activation of PDSCH TCI status MAC CE activates the TCI status on all BWP / CCs in the applicable CC list.
  • A-SRS / SP-SRS spatial relationship activation MAC CE activates the spatial relationship associated with the same SRS resource ID on all BWP / CCs in the applicable CC list.
  • Beam management In DL / UL beam management, more efficient beam management such as lower latency and lower overhead is being considered.
  • the QCL assumption / TCI state of a periodic CSI-RS (eg, the information element qcl-InfoPeriodicCSI-RS (TCI-StateId)) is an RRC signaling (eg, the information element NZP-CSI-RS-Resource). ) Is set.
  • P-CSI-RS periodic CSI-RS
  • TCI-StateId the information element
  • NZP-CSI-RS-Resource the information element NZP-CSI-RS-Resource
  • the present inventors have conceived a method for appropriately changing the P-CSI-RS used.
  • a / B and “at least one of A and B” may be read as each other.
  • cell, CC, carrier, BWP, DL BWP, UL BWP, active DL BWP, active UL BWP, and band may be read as each other.
  • the index, the ID, the indicator, and the resource ID may be read as each other.
  • the RRC parameter, the upper layer parameter, the RRC information element (IE), and the RRC message may be read as each other.
  • support, control, controllable, working, working may be read interchangeably.
  • activate, update, indicate, enable, and specify may be read as interchangeable with each other.
  • MAC CE and activation / deactivation commands may be read interchangeably.
  • the upper layer signaling may be, for example, any one of Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information, or a combination thereof.
  • RRC Radio Resource Control
  • MAC Medium Access Control
  • MAC CE MAC Control Element
  • PDU MAC Protocol Data Unit
  • the broadcast information includes, for example, a master information block (Master Information Block (MIB)), a system information block (System Information Block (SIB)), a minimum system information (Remaining Minimum System Information (RMSI)), and other system information ( Other System Information (OSI)) may be used.
  • MIB Master Information Block
  • SIB System Information Block
  • RMSI Minimum System Information
  • OSI Other System Information
  • the UE spatial domain transmit filter, UE transmit beam, UL beam, UL transmit beam, UL precoding, and UL precoder may be read interchangeably.
  • the QCL type X-RS, the DL-RS associated with the QCL type X, the DL-RS having the QCL type X, the source of the DL-RS, the SSB, and the CSI-RS may be read as each other.
  • CC list, cell list, applicable list simultaneous TCI update list, simulatedTCI-UpdateList-r16 / simulatedTCI-UpdateListSecond-r16, simultaneous TCI cell list, simulatedTCI-CellList, simultaneous spatial update list, simulatedSpatial-UpdateList-r16.
  • the CC indicated by the activation command, the CC indicated, the CC that received the MAC CE, the information indicating multiple cells for at least one update of the TCI state and spatial relationship, may be read interchangeably.
  • P-CSI-RS, CSI-RS, and NZP-CSI-RS may be read as each other.
  • the CSI-RS resource, the CSI-RS resource set, the CSI-RS resource group, and the information element (IE) may be read as each other.
  • the UE may support the new MAC CE updating the TCI state / QCL assumptions of the P-CSI-RS.
  • MAC CE is the CSI-RS resource ID of one P-CSI-RS (non-zero power (NZP) -CSI-RS) or the CSI-RS of multiple P-CSI-RS (NZP-CSI-RS).
  • One TCI state may be included for the CSI-RS resource set ID (CSI-RS resource group ID).
  • MAC CE may follow any of the following options 1 and 2.
  • ⁇ Option 1 The TCI status update is performed for each CSI-RS resource ID of P-CSI-RS.
  • the MAC CE has a reserved bit (R) field, one serving cell ID field, one bandwidth part (BWP) ID field, and one P-CSI-RS resource ID field. And at least one of the TCI state ID fields.
  • the TCI state of the P-CSI-RS resource indicated by the P-CSI-RS resource ID is indicated by the TCI state ID field.
  • the MAC CE includes an R field, one serving cell ID field, one BWP ID field, and N + 1 P-CSI-RS resource ID (CSI-RS resource IDs 0 to N) fields. , N + 1 TCI state ID (TCI state IDs 0 to N) fields, and at least one of them.
  • the N + 1 TCI status ID fields correspond to the N + 1 P-CSI-RS resource ID fields, respectively.
  • the TCI state of each P-CSI-RS resource is indicated by the corresponding TCI state ID field.
  • ⁇ Option 2 The TCI status update is performed for each CSI-RS resource set ID (CSI-RS resource group ID) of P-CSI-RS.
  • the MAC CE includes an R field, one serving cell ID field, one BWP ID field, one P-CSI-RS resource set ID field, and one TCI state ID field. Includes at least one.
  • the TCI state of the P-CSI-RS resource set indicated by the P-CSI-RS resource set ID is indicated by the TCI state ID field.
  • the MAC CE has an R field, one serving cell ID field, one BWP ID field, and N + 1 P-CSI-RS resource set IDs (CSI-RS resource set IDs 0 to N). It contains at least one of a field and N + 1 TCI state ID (TCI state IDs 0 to N) fields.
  • the N + 1 TCI state ID fields correspond to the N + 1 P-CSI-RS resource set ID fields, respectively.
  • the TCI state of each P-CSI-RS resource set is indicated by the corresponding TCI state ID field.
  • the MAC CE may include one or more P-CSI-RS resource set IDs and a TCI state for each P-CSI-RS resource in that resource set.
  • the MAC CE has an R field, one serving cell ID field, one BWP ID field, one P-CSI-RS resource set ID field, and M + 1 TCI state IDs (TCI states).
  • IDs 0 to M) include at least one of the fields.
  • the M + 1 P-CSI-RS resources in the P-CSI-RS resource set indicated by the P-CSI-RS resource set ID correspond to the M + 1 TCI state ID fields.
  • the TCI state of each P-CSI-RS resource is indicated by the corresponding TCI state ID field.
  • the MAC CE has an R field, one serving cell ID field, one BWP ID field, and N + 1 P-CSI-RS resource set IDs (CSI-RS resource set IDs 0 to N). It contains at least one of a field and M + 1 TCI state ID (TCI state IDs 0 to M) fields per P-CSI-RS resource set ID field.
  • the M + 1 P-CSI-RS resources in the P-CSI-RS resource set indicated by each P-CSI-RS resource set ID correspond to consecutive M + 1 TCI state ID fields.
  • the TCI state of each P-CSI-RS resource is indicated by the corresponding TCI state ID field.
  • the TCI state of P-CSI-RS can be changed without resetting the RRC, and a large number of P-CSI-RS resources can be efficiently used.
  • the UE may support the activation / deactivation of the P-CSI-RS via the new MAC CE.
  • the MAC CE is an activation / diak for one P-CSI-RS resource, or one P-CSI-RS resource set, or multiple P-CSI-RS resources, or multiple P-CSI-RS resource sets. Tibation may be included.
  • the MAC CE may explicitly specify the P-CSI-RS resource ID / P-CSI-RS resource set ID. , May be indicated by a bitmap.
  • the TCI state for the P-CSI-RS resource (eg, the information element qcl-InfoPeriodicCSI-RS (TCI-StateId)) may be set by RRC signaling (eg, the information element NZP-CSI-RS-Resource).
  • the MAC CE in the second embodiment does not have to include the TCI status ID field.
  • the TCI state set by the RRC parameter may be used for the transmission of P-CSI-RS.
  • MAC CE may follow any of the following options 1-5.
  • Option 1 Activation / deactivation is performed for each CSI-RS resource ID for one or more P-CSI-RS resources.
  • the MAC CE has one activation / deactivation (A / D) field, one serving cell ID field, one BWP ID field, and one P-CSI-RS resource ID field. And at least one of.
  • the activation or deactivation of the P-CSI-RS resource indicated by the P-CSI-RS resource ID is indicated by the A / D field.
  • the MAC CE includes an R field, one serving cell ID field, one BWP ID field, N + 1 A / D fields, and N + 1 P-CSI-RS resource ID fields. Includes at least one of.
  • the N + 1 A / D fields correspond to the N + 1 P-CSI-RS resource ID fields, respectively.
  • the activation or deactivation of each P-CSI-RS resource is indicated by the corresponding A / D field.
  • Option 2 For one or more P-CSI-RS resource sets or P-CSI-RS resource groups, activation / deactivation is performed for each P-CSI-RS resource set ID or P-CSI-RS resource group ID. Will be done.
  • the MAC CE has one activation / deactivation (A / D) field, one serving cell ID field, one BWP ID field, and one P-CSI-RS resource set ID. Includes fields and.
  • the activation or deactivation of the P-CSI-RS resource set indicated by the P-CSI-RS resource set ID is indicated by the A / D field.
  • the MAC CE includes an R field, one serving cell ID field, one BWP ID field, N + 1 A / D fields, and N + 1 P-CSI-RS resource set ID fields. , Including at least one of.
  • the N + 1 A / D fields correspond to the N + 1 P-CSI-RS resource set ID fields, respectively.
  • the activation or deactivation of each P-CSI-RS resource set is indicated by the corresponding A / D field.
  • Option 3 The same activation / deactivation is performed for multiple P-CSI-RS resources.
  • the MAC CE has at least one of one A / D field, one serving cell ID field, one BWP ID field, and N + 1 P-CSI-RS resource ID fields. include. The activation or deactivation of N + 1 P-CSI-RS resources is indicated by one A / D field.
  • Option 4 The same activation / deactivation is performed for multiple P-CSI-RS resource sets.
  • the MAC CE includes one A / D field, one serving cell ID field, one BWP ID field, an R field, and N + 1 P-CSI-RS resource set ID fields. Includes at least one of.
  • the activation or deactivation of N + 1 P-CSI-RS resource sets is indicated by one A / D field.
  • MAC CE indicates activation / deactivation for each P-CSI-RS resource or each P-CSI-RS resource set by bitmap.
  • the MAC CE includes at least one of an R field, one serving cell ID field, one BWP ID field, and a bitmap.
  • the bitmap contains L A / D fields.
  • the bitmap may follow either of the following options 5A and 5B.
  • the bitmap length L may be the maximum number of P-CSI-RS resources.
  • Each A / D field may indicate the activation / deactivation of the corresponding P-CSI-RS resource.
  • the bitmap length L may be the maximum number of P-CSI-RS resource sets or P-CSI-RS resource groups.
  • Each A / D field may indicate the activation / deactivation of the corresponding P-CSI-RS resource set or the corresponding P-CSI-RS resource group.
  • P-CSI-RS can be activated / deactivated without resetting the RRC, and a large number of P-CSI-RS resources can be efficiently used. ..
  • the new MAC CE for P-CSI-RS may follow either option 1 or 2 below.
  • the MAC CE may activate a P-CSI-RS resource or P-CSI-RS resource set with an updated TCI state.
  • the MAC CE includes at least one of an R field, a serving cell ID field, a BWP ID field, one P-CSI-RS resource set ID field, and one TCI state ID field.
  • the TCI state ID field indicates the TCI state corresponding to the P-CSI-RS resource indicated by the P-CSI-RS resource set ID field.
  • the MAC CE is at least one of an R field, a serving cell ID field, a BWP ID field, N + 1 P-CSI-RS resource set ID fields, and N + 1 TCI state ID fields. Including one.
  • the N + 1 TCI state ID fields correspond to the N + 1 P-CSI-RS resource set ID fields, respectively.
  • the MAC CE may activate a P-CSI-RS resource or P-CSI-RS resource set with an updated TCI state.
  • the MAC CE may deactivate the P-CSI-RS resource or the P-CSI-RS resource set.
  • the MAC CE for deactivation may not include the TCI status ID.
  • the MAC CE is an R field, a serving cell ID field, a BWP ID field, one A / D field, one P-CSI-RS resource set ID field, and one TCI state field. And at least one of. If the value of the A / D field is 1, the P-CSI-RS resource set indicated by the P-CSI-RS resource set ID field may be activated and the TCI status field may be present. If the value of the A / D field is 0, the P-CSI-RS resource set indicated by the P-CSI-RS resource set ID field is deactivated and the TCI status field does not have to be present.
  • the MAC CE includes an R field, a serving cell ID field, a BWP ID field, N + 1 A / D fields, N + 1 P-CSI-RS resource set ID fields, and N + 1 pieces. Includes at least one of the TCI state ID fields.
  • the N + 1 A / D fields correspond to the N + 1 P-CSI-RS resource set ID fields, respectively.
  • the N + 1 TCI state ID fields correspond to the N + 1 P-CSI-RS resource set ID fields, respectively. If the value of the A / D field is 1, the P-CSI-RS resource set indicated by the corresponding P-CSI-RS resource set ID field may be activated and the corresponding TCI status field may be present. If the value of the A / D field is 0, the P-CSI-RS resource set indicated by the corresponding P-CSI-RS resource set ID field is deactivated, even if the corresponding TCI status field does not exist. good.
  • the MAC CE may include one or more P-CSI-RS resource set IDs and a TCI state for each P-CSI-RS resource in that resource set.
  • the MAC CE has at least one of an R field, a serving cell ID field, a BWP ID field, one P-CSI-RS resource set ID field, and M + 1 TCI status fields.
  • the P-CSI-RS resource set indicated by one P-CSI-RS resource set ID field contains M + 1 P-CSI-RS resources.
  • Each M + 1 TCI state field corresponds to an M + 1 P-CSI-RS resource.
  • the MAC CE is per R field, serving cell ID field, BWP ID field, N + 1 P-CSI-RS resource set ID field, and one P-CSI-RS resource set ID field. Includes M + 1 TCI state fields and at least one of them.
  • the P-CSI-RS resource set indicated by one P-CSI-RS resource set ID field contains M + 1 P-CSI-RS resources.
  • the M + 1 TCI status fields corresponding to one P-CSI-RS resource set correspond to the M + 1 P-CSI-RS resources in the P-CSI-RS resource set, respectively.
  • the MAC CE has an R field, a serving cell ID field, a BWP ID field, one A / D field, one P-CSI-RS resource set ID field, and M + 1 TCI states. Includes at least one of the fields.
  • the P-CSI-RS resource set indicated by one P-CSI-RS resource set ID field contains M + 1 P-CSI-RS resources. Each M + 1 TCI state field corresponds to the M + 1 P-CSI-RS resource. If the value of the A / D field is 1, the P-CSI-RS resource set indicated by the P-CSI-RS resource set ID field may be activated and there may be M + 1 TCI status fields. If the value of the A / D field is 0, the P-CSI-RS resource set indicated by the P-CSI-RS resource set ID field is deactivated and the M + 1 TCI status fields may not be present. ..
  • the MAC CE includes an R field, a serving cell ID field, a BWP ID field, N + 1 A / D fields, N + 1 P-CSI-RS resource set ID fields, and one P.
  • - contains at least one of M + 1 TCI status ID fields per CSI-RS resource set ID field.
  • the N + 1 A / D fields correspond to the N + 1 P-CSI-RS resource set ID fields, respectively.
  • the P-CSI-RS resource set indicated by one P-CSI-RS resource set ID field contains M + 1 P-CSI-RS resources.
  • the M + 1 TCI status fields corresponding to one P-CSI-RS resource set correspond to the M + 1 P-CSI-RS resources in the P-CSI-RS resource set, respectively.
  • the P-CSI-RS resource set indicated by the corresponding P-CSI-RS resource set ID field is activated and the corresponding M + 1 TCI status fields are present. May be good. If the value of the A / D field is 0, the P-CSI-RS resource set indicated by the corresponding P-CSI-RS resource set ID field is deactivated and there is a corresponding M + 1 TCI status field. It does not have to be.
  • the state of P-CSI-RS can be changed without resetting the RRC, and a large number of P-CSI-RS resources can be efficiently used.
  • the UE may support updating the TCI status of the P-CSI-RS simultaneously across multiple CCs.
  • the MAC CE will be simultaneous. It may be applied to all serving cells set in the TCI update list.
  • the MAC CE may be the MAC CE of any one of the first to third embodiments.
  • the designated serving cell may be a serving cell designated by the serving cell ID field in the MAC CE.
  • the simultaneous TCI update list may be a first simultaneous TCI update list (eg, simultaneousTCI-UpdateList-r16) or a second simultaneous TCI update list (eg, simultaneousTCI-UpdateListSecond-r16).
  • the overhead of updating the TCI state can be suppressed.
  • the P-CSI-RS resource may be common to a plurality of UEs or may be shared by a plurality of UEs.
  • the MAC CE updates the TCI state of the P-CSI-RS resource for one UE (eg, first embodiment), it is difficult for multiple UEs to share the same P-CSI-RS resource.
  • P-CSI-RS # 1 to # 4 are set.
  • P-CSI-RS # 1 to # 4 have TCI # 1 to # 4, respectively.
  • MAC CE updates the TCI state of P-CSI-RS # 2 from TCI # 2 to TCI # 4. Unless the TCI state of P-CSI-RS # 2 is updated for all UEs at the same time, it is difficult for multiple UEs to share P-CSI-RS # 2.
  • DCI Group common signaling
  • the specific field in the DCI may indicate at least one of updating the TCI state of the P-CSI-RS resource and activating / deactivating the P-CSI-RS resource.
  • the DCI may schedule a PDSCH containing a new MAC CE for at least one of updating the TCI status of the P-CSI-RS resource and activating / deactivating the P-CSI-RS resource. ..
  • the new MAC CE may be the MAC CE of any one of the first to fourth embodiments.
  • the MAC CE activates / deactivates the P-CSI-RS resource (eg, second embodiment)
  • multiple UEs can share the same P-CSI-RS resource.
  • the active P-CSI-RS resource is P-CSI-RS # 2.
  • MAC CE switches the active P-CSI-RS resource from P-CSI-RS # 2 to # 4. Since the TCI state of each P-CSI-RS resource does not change, a plurality of UEs can share the same P-CSI-RS resource.
  • P-CSI-RS # 2 is deactivated for one UE, whether P-CSI-RS # 2 is actually transmitted to other UEs depends on the base station implementation. You may. The deactive P-CSI-RS need not be transmitted to all UEs.
  • RRC parameters set multiple P-CSI-RS resources, one TCI state / QCL assumption is mapped to one P-CSI-RS resource, and MAC CE selects / indicates one P-CSI-RS resource. You may.
  • the UE may assume a TCI state / QCL assumption corresponding to the selected / indicated P-CSI-RS resource.
  • the UE operation for the active CSI-RS resource is described in Rel. It may be the same as 15/16.
  • the UE is no longer required to measure deactive P-CSI-RS resources in beam management / Layer 1 (L1) -RSRP / Beam Fault Recovery (BFR) / Radio Resource Management (RLM). You may.
  • L1 Layer 1
  • BFR Beam Fault Recovery
  • RLM Radio Resource Management
  • the UE operation related to PDSCH rate matching / puncturing may follow either of the following options 1 and 2.
  • Deactive CSI-RS resources may be used for PDSCH.
  • PDSCH rate matching / puncturing may not be performed on (around) the deactive CSI-RS resource. This makes it possible to improve the efficiency of resource utilization.
  • Deactive CSI-RS resources are not used for PDSCH.
  • PDSCH rate matching / puncturing may be performed on (around) the deactive CSI-RS resource. This allows multiple UEs to share deactive CSI-RS resources.
  • a CSI-RS resource that is deactive for one UE may be active for another UE.
  • Scheduling limitation due to deactive CSI-RS in simultaneous reception of deactive CSI-RS and other DL signals using different QCL type D (PDSCH / CSI-RS / TRS / SSB, etc.) It does not have to be. This allows the base station to schedule a PDSCH with a different QCL type D on the same symbol as the deactive CSI-RS.
  • Scheduling restrictions due to a specific signal (eg, CSI-RS, deactive CSI-RS) allow the UE to receive another DL signal with a QCL type D that is different from the QCL type of the specific signal in the same symbol as the specific signal. It may not be possible.
  • the TCI state of PDSCH is TCI # 3.
  • the P-CSI-RS resources in symbols # 1 to # 8 have TCI # 1 to # 8, respectively. Rel. At 15, only symbols # 3 of P-CSI-RS resources with the same TCI state are available for PDSCH and symbols # 1, # 2, # 4 to # of P-CSI-RS resources with different TCI states. 8 is not available for PDSCH.
  • the second embodiment is applied to the example of FIG. 13A.
  • the P-CSI-RS resource of symbol # 3 only is active, and the P-CSI-RS resource of symbols # 1, # 2, # 4 to # 8 is deactive.
  • the UE is not required to measure the P-CSI-RS resource and may have no scheduling restrictions. On the other hand, there may be a scheduling limitation for PDSCHs having different QCL type D in the same symbol as the active P-CSI-RS resource.
  • the active or deactive of the P-CSI-RS resource may be applied to the P-CSI-RS resource having a specific use (eg, L1-RSRP / beam management / BFR).
  • a specific use eg, L1-RSRP / beam management / BFR.
  • the UE may be required to measure the P-CSI-RS resource. Scheduling restrictions may be imposed on PDSCHs with different QCL type D in the same symbol as the P-CSI-RS resource having uses other than the specific use.
  • An RRC parameter that enables any of the features of the first to fifth embodiments may be set in the UE.
  • the UE may use the function.
  • the UE may report UE capability information indicating that it supports any of the functions of the first to fifth embodiments (eg, updating P-CSI-RS resources based on MAC CE). ..
  • the UE may use the function when reporting UE capability information indicating support for the function. If the UE reports UE capability information indicating support for the feature, RRC parameters may be set to enable the feature. If the UE reports UE capability information indicating support for the feature and RRC parameters are set to enable the feature, the UE may use the feature.
  • wireless communication system Wireless communication system
  • communication is performed using any one of the wireless communication methods according to each of the above-described embodiments of the present disclosure or a combination thereof.
  • FIG. 14 is a diagram showing an example of a schematic configuration of a wireless communication system according to an embodiment.
  • the wireless communication system 1 may be a system that realizes communication using Long Term Evolution (LTE), 5th generation mobile communication system New Radio (5G NR), etc. specified by Third Generation Partnership Project (3GPP). ..
  • the wireless communication system 1 may support dual connectivity (Multi-RAT Dual Connectivity (MR-DC)) between a plurality of Radio Access Technologies (RATs).
  • MR-DC is a dual connectivity (E-UTRA-NR Dual Connectivity (EN-DC)) between LTE (Evolved Universal Terrestrial Radio Access (E-UTRA)) and NR, and a dual connectivity (NR-E) between NR and LTE.
  • E-UTRA-NR Dual Connectivity Evolved Universal Terrestrial Radio Access (E-UTRA)
  • NR-E dual connectivity
  • NE-DC -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 base station (gNB) of NR is MN
  • the base station (eNB) of LTE (E-UTRA) is SN.
  • the wireless communication system 1 has dual connectivity between a plurality of base stations in the same RAT (for example, dual connectivity (NR-NR Dual Connectivity (NN-DC)) in which both MN and SN are NR base stations (gNB). )) May be supported.
  • a plurality of base stations in the same RAT for example, dual connectivity (NR-NR Dual Connectivity (NN-DC)) in which both MN and SN are NR base stations (gNB). )
  • NR-NR Dual Connectivity NR-DC
  • gNB NR base stations
  • the wireless communication system 1 includes a base station 11 that forms a macrocell C1 having a relatively wide coverage, and a base station 12 (12a-12c) that is arranged in the macrocell C1 and forms a small cell C2 that is narrower than the macrocell C1. You may prepare.
  • the user terminal 20 may be located in at least one cell. The arrangement, number, and the like of each cell and the user terminal 20 are not limited to the mode shown in the figure.
  • the base stations 11 and 12 are not distinguished, they are collectively referred to as the base station 10.
  • the user terminal 20 may be connected to at least one of a plurality of base stations 10.
  • the user terminal 20 may use at least one of carrier aggregation (Carrier Aggregation (CA)) and dual connectivity (DC) using a plurality of component carriers (Component Carrier (CC)).
  • CA Carrier Aggregation
  • DC dual connectivity
  • CC Component Carrier
  • Each CC may be included in at least one of a first frequency band (Frequency Range 1 (FR1)) and a second frequency band (Frequency Range 2 (FR2)).
  • the macrocell C1 may be included in FR1 and the small cell C2 may be included in FR2.
  • FR1 may be in a frequency band of 6 GHz or less (sub 6 GHz (sub-6 GHz)), and FR 2 may be in a frequency band higher than 24 GHz (above-24 GHz).
  • the frequency bands and definitions of FR1 and FR2 are not limited to these, and for example, FR1 may correspond to a frequency band higher than FR2.
  • the user terminal 20 may perform communication 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 compliant with Common Public Radio Interface (CPRI), X2 interface, etc.) or wirelessly (for example, NR communication).
  • wire for example, optical fiber compliant with Common Public Radio Interface (CPRI), X2 interface, etc.
  • NR communication for example, when NR communication is used as a backhaul between base stations 11 and 12, the base station 11 corresponding to the higher-level station is an Integrated Access Backhaul (IAB) donor, and the base station 12 corresponding to a relay station (relay) is IAB. It may be called a node.
  • IAB Integrated Access Backhaul
  • relay station relay station
  • 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 at least one such as Evolved Packet Core (EPC), 5G Core Network (5GCN), and Next Generation Core (NGC).
  • EPC Evolved Packet Core
  • 5GCN 5G Core Network
  • NGC Next Generation Core
  • the user terminal 20 may be a terminal that supports at least one of communication methods such as LTE, LTE-A, and 5G.
  • a wireless access method based on Orthogonal Frequency Division Multiplexing may be used.
  • OFDM Orthogonal Frequency Division Multiplexing
  • DL Downlink
  • UL Uplink
  • CP-OFDM Cyclic Prefix OFDM
  • DFT-s-OFDM Discrete Fourier Transform Spread OFDM
  • OFDMA Orthogonal Frequency Division Multiple. Access
  • SC-FDMA Single Carrier Frequency Division Multiple Access
  • the wireless access method may be called a waveform.
  • another wireless access system for example, another single carrier transmission system, another multi-carrier transmission system
  • the UL and DL wireless access systems may be used as the UL and DL wireless access systems.
  • a downlink shared channel Physical Downlink Shared Channel (PDSCH)
  • a broadcast channel Physical Broadcast Channel (PBCH)
  • a downlink control channel Physical Downlink Control
  • PDSCH Physical Downlink Control
  • the uplink shared channel Physical Uplink Shared Channel (PUSCH)
  • the uplink control channel Physical Uplink Control Channel (PUCCH)
  • the random access channel shared by each user terminal 20 are used.
  • Physical Random Access Channel (PRACH) Physical Random Access Channel or the like may be used.
  • User data, upper layer control information, System Information Block (SIB), etc. are transmitted by PDSCH.
  • User data, upper layer control information, and the like may be transmitted by the PUSCH.
  • the Master Information Block (MIB) may be transmitted by the PBCH.
  • Lower layer control information may be transmitted by PDCCH.
  • the lower layer control information may include, for example, downlink control information (Downlink Control Information (DCI)) including scheduling information of at least one of PDSCH and PUSCH.
  • DCI Downlink Control Information
  • the DCI that schedules PDSCH may be called DL assignment, DL DCI, or the like, and the DCI that schedules PUSCH may be called UL grant, UL DCI, or the like.
  • the PDSCH may be read as DL data, and the PUSCH may be read as UL data.
  • a control resource set (COntrol REsource SET (CORESET)) and a search space (search space) may be used for PDCCH detection.
  • CORESET corresponds to a resource for searching DCI.
  • the search space corresponds to the search area and search method of PDCCH candidates (PDCCH candidates).
  • One CORESET may be associated with one or more search spaces. The UE may monitor the CORESET associated with a search space based on the search space settings.
  • 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.
  • the "search space”, “search space set”, “search space setting”, “search space set setting”, “CORESET”, “CORESET setting”, etc. of the present disclosure may be read as each other.
  • channel state information (Channel State Information (CSI)
  • delivery confirmation information for example, it may be called Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK), ACK / NACK, etc.
  • scheduling request for example.
  • Uplink Control Information (UCI) including at least one of SR) may be transmitted.
  • the PRACH may transmit a random access preamble to establish a connection with the cell.
  • downlinks, uplinks, etc. may be expressed without “links”. Further, it may be expressed without adding "Physical" to the beginning of various channels.
  • a synchronization signal (Synchronization Signal (SS)), a downlink reference signal (Downlink Reference Signal (DL-RS)), and the like may be transmitted.
  • the DL-RS includes a cell-specific reference signal (Cell-specific Reference Signal (CRS)), a channel state information reference signal (Channel State Information Reference Signal (CSI-RS)), and a reference signal for demodulation (DeModulation).
  • CRS Cell-specific Reference Signal
  • CSI-RS Channel State Information Reference Signal
  • DMRS positioning reference signal
  • PRS Positioning Reference Signal
  • PTRS phase tracking reference signal
  • the synchronization signal may be, for example, at least one of a primary synchronization signal (Primary Synchronization Signal (PSS)) and a secondary synchronization signal (Secondary Synchronization Signal (SSS)).
  • PSS Primary Synchronization Signal
  • SSS Secondary Synchronization Signal
  • the signal block including SS (PSS, SSS) and PBCH (and DMRS for PBCH) may be referred to as SS / PBCH block, SS Block (SSB) and the like.
  • SS, SSB and the like may also be called a reference signal.
  • a measurement reference signal Sounding Reference Signal (SRS)
  • a demodulation reference signal DMRS
  • UL-RS Uplink Reference Signal
  • UE-specific Reference Signal UE-specific Reference Signal
  • FIG. 15 is a diagram showing an example of the configuration of a base station according to an embodiment.
  • the base station 10 includes a control unit 110, a transmission / reception unit 120, a transmission / reception antenna 130, and a transmission line interface 140.
  • the control unit 110, the transmission / reception unit 120, the transmission / reception antenna 130, and the transmission line interface 140 may each be provided with one or more.
  • the functional block of the characteristic portion in the present embodiment is mainly shown, 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 part described below may be omitted.
  • the control unit 110 controls the entire base station 10.
  • the control unit 110 can be composed of a controller, a control circuit, and the like described based on the common recognition in the technical field according to the present disclosure.
  • the control unit 110 may control signal generation, scheduling (for example, resource allocation, mapping) and the like.
  • the control unit 110 may control transmission / reception, measurement, and the like using the transmission / reception unit 120, the transmission / reception antenna 130, and the transmission line interface 140.
  • the control unit 110 may generate data to be transmitted as a signal, control information, a sequence, and the like, and transfer the data to the transmission / reception unit 120.
  • the control unit 110 may perform call processing (setting, release, etc.) of the communication channel, status management of the base station 10, management of radio resources, and the like.
  • the transmission / reception unit 120 may include a baseband unit 121, a Radio Frequency (RF) unit 122, and a measurement unit 123.
  • the baseband unit 121 may include a transmission processing unit 1211 and a reception processing unit 1212.
  • the transmitter / receiver 120 includes a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transmitter / receiver circuit, and the like, which are described based on the common recognition in the technical field according to the present disclosure. be able to.
  • the transmission / reception unit 120 may be configured as an integrated transmission / reception unit, or may be composed of a transmission unit and a reception unit.
  • the transmission unit may be composed of a transmission processing unit 1211 and an RF unit 122.
  • the receiving unit may be composed of a receiving processing unit 1212, an RF unit 122, and a measuring unit 123.
  • the transmitting / receiving antenna 130 can be composed of an antenna described based on the common recognition in the technical field according to the present disclosure, for example, an array antenna.
  • the transmission / reception unit 120 may transmit the above-mentioned downlink channel, synchronization signal, downlink reference signal, and the like.
  • the transmission / reception unit 120 may receive the above-mentioned uplink channel, uplink reference signal, and the like.
  • the transmission / reception unit 120 may form at least one of a transmission beam and a reception beam by using digital beamforming (for example, precoding), analog beamforming (for example, phase rotation), and the like.
  • digital beamforming for example, precoding
  • analog beamforming for example, phase rotation
  • the transmission / reception unit 120 processes, for example, Packet Data Convergence Protocol (PDCP) layer processing and Radio Link Control (RLC) layer processing (for example, RLC) for data, control information, etc. acquired from control unit 110.
  • PDCP Packet Data Convergence Protocol
  • RLC Radio Link Control
  • MAC Medium Access Control
  • HARQ retransmission control HARQ retransmission control
  • the transmission / reception unit 120 performs channel coding (may include error correction coding), modulation, mapping, filtering, and discrete Fourier transform (Discrete Fourier Transform (DFT)) for the bit string to be transmitted. Processing (if necessary), inverse Fast Fourier Transform (IFFT) processing, precoding, transmission processing such as digital-analog transformation may be performed, and the baseband signal may be output.
  • channel coding may include error correction coding
  • modulation modulation
  • mapping mapping, filtering
  • DFT discrete Fourier Transform
  • IFFT inverse Fast Fourier Transform
  • precoding coding
  • transmission processing such as digital-analog transformation
  • the transmission / reception unit 120 may perform modulation, filtering, amplification, etc. on the baseband signal to the radio frequency band, and transmit the signal in the radio frequency band via the transmission / reception antenna 130. ..
  • the transmission / reception unit 120 may perform amplification, filtering, demodulation to a baseband signal, or the like on the signal in the radio frequency band received by the transmission / reception antenna 130.
  • the transmission / reception unit 120 (reception processing unit 1212) performs analog-digital conversion, fast Fourier transform (FFT) processing, and inverse discrete Fourier transform (IDFT) for the acquired baseband signal. )) Processing (if necessary), filtering, decoding, demodulation, decoding (may include error correction decoding), MAC layer processing, RLC layer processing, PDCP layer processing, and other reception processing are applied. User data and the like may be acquired.
  • FFT fast Fourier transform
  • IDFT inverse discrete Fourier transform
  • the transmission / reception unit 120 may perform measurement on the received signal.
  • the measurement unit 123 may perform Radio Resource Management (RRM) measurement, Channel State Information (CSI) measurement, or the like based on the received signal.
  • the measuring unit 123 has received power (for example, Reference Signal Received Power (RSRP)) and reception quality (for example, Reference Signal Received Quality (RSRQ), Signal to Interference plus Noise Ratio (SINR), Signal to Noise Ratio (SNR)).
  • RSRP Reference Signal Received Power
  • RSSQ Reference Signal Received Quality
  • SINR Signal to Noise Ratio
  • Signal strength for example, Received Signal Strength Indicator (RSSI)
  • propagation path information for example, CSI
  • the measurement result may be output to the control unit 110.
  • the transmission line interface 140 transmits / receives signals (backhaul signaling) to / from a device included in the core network 30, another base station 10, etc., and user data (user plane data) for the user terminal 20 and a control plane. Data or the like may be acquired or transmitted.
  • the transmission unit and the reception unit of the base station 10 in the present disclosure may be composed of at least one of the transmission / reception unit 120, the transmission / reception antenna 130, and the transmission path interface 140.
  • the transmission / reception unit 120 may transmit one or more information elements for setting a periodic channel state information-reference signal (CSI-RS).
  • the control unit 110 may control the transmission of a medium access control-control element (MAC CE) including one or more transmission control indication (TCI) states.
  • the one or more TCI states correspond to the one or more information elements, respectively, and each of the one or more information elements may indicate either a CSI-RS resource or a CSI-RS resource set.
  • the transmission / reception unit 120 may transmit one or more information elements for setting a periodic channel state information-reference signal (CSI-RS).
  • the control unit 110 may control the transmission of a medium access control-control element (MAC CE) including one or more bits.
  • the one or more bits correspond to the one or more information elements, each of the one or more bits indicates activation or deactivation of the corresponding information element, and each of the one or more information elements corresponds to the one or more information elements.
  • CSI-RS resource and CSI-RS resource set are examples of CSI-RS resource set.
  • FIG. 16 is a diagram showing an example of the configuration of a user terminal according to an embodiment.
  • the user terminal 20 includes a control unit 210, a transmission / reception unit 220, and a transmission / reception antenna 230.
  • the control unit 210, the transmission / reception unit 220, and the transmission / reception antenna 230 may each be provided with one or more.
  • the functional block of the feature portion in the present embodiment is mainly shown, 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 part described below may be omitted.
  • the control unit 210 controls the entire user terminal 20.
  • the control unit 210 can be composed of a controller, a control circuit, and the like described based on the common recognition in the technical field according to the present disclosure.
  • the control unit 210 may control signal generation, mapping, and the like.
  • the control unit 210 may control transmission / reception, measurement, and the like using the transmission / reception unit 220 and the transmission / reception antenna 230.
  • the control unit 210 may generate data to be transmitted as a signal, control information, a sequence, and the like, and transfer the data to the transmission / reception unit 220.
  • the transmission / reception unit 220 may include a baseband unit 221, an RF unit 222, and a measurement unit 223.
  • the baseband unit 221 may include a transmission processing unit 2211 and a reception processing unit 2212.
  • the transmitter / receiver 220 can be composed of a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transmitter / receiver circuit, and the like, which are described based on the common recognition in the technical field according to the present disclosure.
  • the transmission / reception unit 220 may be configured as an integrated transmission / reception unit, or may be composed of a transmission unit and a reception unit.
  • the transmission unit may be composed of a transmission processing unit 2211 and an RF unit 222.
  • the receiving unit may be composed of a receiving processing unit 2212, an RF unit 222, and a measuring unit 223.
  • the transmitting / receiving antenna 230 can be composed of an antenna described based on the common recognition in the technical field according to the present disclosure, for example, an array antenna.
  • the transmission / reception unit 220 may receive the above-mentioned downlink channel, synchronization signal, downlink reference signal, and the like.
  • the transmission / reception unit 220 may transmit the above-mentioned uplink channel, uplink reference signal, and the like.
  • the transmission / reception unit 220 may form at least one of a transmission beam and a reception beam by using digital beamforming (for example, precoding), analog beamforming (for example, phase rotation), and the like.
  • digital beamforming for example, precoding
  • analog beamforming for example, phase rotation
  • the transmission / reception unit 220 processes, for example, PDCP layer processing, RLC layer processing (for example, RLC retransmission control), and MAC layer processing (for example, for data, control information, etc. acquired from the control unit 210). , HARQ retransmission control), etc., to generate a bit string to be transmitted.
  • the transmission / reception unit 220 (transmission processing unit 2211) performs channel coding (may include error correction coding), modulation, mapping, filtering processing, DFT processing (if necessary), and IFFT processing for the bit string to be transmitted. , Precoding, digital-to-analog conversion, and other transmission processing may be performed, and the baseband signal may be output.
  • Whether or not to apply the DFT process may be based on the transform precoding setting.
  • the transmission / reception unit 220 transmits the channel using the DFT-s-OFDM waveform.
  • the DFT process may be performed as the transmission process, and if not, the DFT process may not be performed as the transmission process.
  • the transmission / reception unit 220 may perform modulation, filtering, amplification, etc. on the baseband signal to the radio frequency band, and transmit the signal in the radio frequency band via the transmission / reception antenna 230. ..
  • the transmission / reception unit 220 may perform amplification, filtering, demodulation to a baseband signal, or the like on the signal in the radio frequency band received by the transmission / reception antenna 230.
  • the transmission / reception unit 220 (reception processing unit 2212) performs analog-to-digital conversion, FFT processing, IDFT processing (if necessary), filtering processing, demapping, demodulation, and decoding (error correction) for the acquired baseband signal. Decoding may be included), MAC layer processing, RLC layer processing, PDCP layer processing, and other reception processing may be applied to acquire user data and the like.
  • the transmission / reception unit 220 may perform measurement on the received signal.
  • the measuring unit 223 may perform RRM measurement, CSI measurement, or the like based on the received signal.
  • the measuring 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 result may be output to the control unit 210.
  • the transmission unit and the reception unit of the user terminal 20 in the present disclosure may be composed of at least one of the transmission / reception unit 220, the transmission / reception antenna 230, and the transmission path interface 240.
  • the transmission / reception unit 220 may receive one or more information elements for setting a periodic channel state information-reference signal (CSI-RS).
  • the control unit 210 may control the reception of a medium access control-control element (MAC CE) including one or more transmission control indication (TCI) states.
  • MAC CE medium access control-control element
  • TCI transmission control indication
  • the one or more TCI states correspond to the one or more information elements, respectively, and each of the one or more information elements may indicate either a CSI-RS resource or a CSI-RS resource set.
  • the MAC CE may include the one or more IDs, and the one or more IDs may each indicate the one or more information elements.
  • the MAC CE includes the one or more bits, the one or more bits correspond to the one or more information elements, and each of the one or more bits corresponds to the activation or diak of the corresponding information element. Tibation may be indicated.
  • the receiving unit receives a list indicating a plurality of serving cells, the MAC CE indicates a serving cell, and when the serving cell is included in the list, the control unit applies the MAC CE to the plurality of serving cells. You may.
  • the transmission / reception unit 220 may receive one or more information elements for setting a periodic channel state information-reference signal (CSI-RS).
  • the control unit 210 may control the reception of a medium access control-control element (MAC CE) including one or more bits.
  • the one or more bits correspond to the one or more information elements, each of the one or more bits indicates activation or deactivation of the corresponding information element, and each of the one or more information elements corresponds to the one or more information elements.
  • CSI-RS resource and CSI-RS resource set are examples of CSI-RS resource set.
  • the MAC CE may include the one or more IDs, and the one or more IDs may each indicate the one or more information elements.
  • the MAC CE includes the one or more TCI states, and the one or more TCI states may correspond to the one or more information elements, respectively.
  • each functional block is realized using one physically or logically coupled device, or two or more physically or logically separated devices can be directly or indirectly (eg, for example). , Wired, wireless, etc.) and may be realized using these plurality of devices.
  • the functional block may be realized by combining the software with the one device or the plurality of devices.
  • the functions include judgment, decision, judgment, calculation, calculation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, solution, selection, selection, establishment, comparison, assumption, expectation, and deemed. , Broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc.
  • a functional block (configuration unit) for functioning transmission may be referred to as a transmitting unit (transmitting unit), a transmitter (transmitter), or the like.
  • the realization method is not particularly limited.
  • the base station, user terminal, and the like in one embodiment of the present disclosure may function as a computer that processes the wireless communication method of the present disclosure.
  • FIG. 17 is a diagram showing an example of the hardware configuration of the base station and the user terminal according to the embodiment.
  • the base station 10 and the 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, and the like. ..
  • the hardware configuration of the base station 10 and the user terminal 20 may be configured to include one or more of the devices shown in the figure, or may be configured not to include some of the devices.
  • processor 1001 may be a plurality of processors. Further, the processing may be executed by one processor, or the processing may be executed simultaneously, sequentially, or by using other methods by two or more processors.
  • the processor 1001 may be mounted by one or more chips.
  • the processor 1001 For each function in the base station 10 and the user terminal 20, for example, by loading predetermined software (program) on hardware such as the processor 1001 and the memory 1002, the processor 1001 performs an operation and communicates via the communication device 1004. It is realized by controlling at least one of reading and writing of data in the memory 1002 and the storage 1003.
  • predetermined software program
  • the processor 1001 operates, for example, an operating system to control the entire computer.
  • the processor 1001 may be configured by a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic unit, a register, and the like.
  • CPU central processing unit
  • control unit 110 210
  • transmission / reception unit 120 220
  • the like may be realized by the processor 1001.
  • the processor 1001 reads a program (program code), a software module, data, etc. from at least one of the storage 1003 and the communication device 1004 into the memory 1002, and executes various processes according to these.
  • a program program code
  • the control unit 110 may be realized by a control program stored in the memory 1002 and operating in the processor 1001, and may be realized in the same manner for other functional blocks.
  • the memory 1002 is a computer-readable recording medium, for example, at least a Read Only Memory (ROM), an Erasable Programmable ROM (EPROM), an Electrically EPROM (EEPROM), a Random Access Memory (RAM), or any other suitable storage medium. It may be composed of one.
  • the memory 1002 may be referred to as a register, a cache, a main memory (main storage device), or the like.
  • the memory 1002 can store a program (program code), a software module, or the like that can be executed to implement the wireless communication method according to the embodiment of the present disclosure.
  • the storage 1003 is a computer-readable recording medium, and is, for example, a flexible disk, a floppy disk (registered trademark) disk, an optical magnetic disk (for example, a compact disc (Compact Disc ROM (CD-ROM), etc.), a digital versatile disk, etc.). At least one of Blu-ray® discs), removable discs, optical disc drives, smart cards, flash memory devices (eg cards, sticks, key drives), magnetic stripes, databases, servers and other suitable storage media. May be configured by.
  • the storage 1003 may be referred to as 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, for example, a network device, a network controller, a network card, a communication module, or the like.
  • the communication device 1004 has, 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 (Frequency Division Duplex (FDD)) and time division duplex (Time Division Duplex (TDD)). May be configured to include.
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • the transmission / reception unit 120 (220), the transmission / reception antenna 130 (230), and the like described above may be realized by the communication device 1004.
  • the transmission / reception unit 120 (220) may be physically or logically separated by the transmission unit 120a (220a) and the reception unit 120b (220b).
  • the input device 1005 is an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that accepts an input from the outside.
  • the output device 1006 is an output device (for example, a display, a speaker, a Light Emitting Diode (LED) lamp, etc.) that outputs to the outside.
  • the input device 1005 and the output device 1006 may have an integrated configuration (for example, a touch panel).
  • each device such as the processor 1001 and the memory 1002 is connected by the bus 1007 for communicating information.
  • the bus 1007 may be configured by using a single bus, or may be configured by using a different bus for each device.
  • the base station 10 and the user terminal 20 include a microprocessor, a digital signal processor (Digital Signal Processor (DSP)), an Application Specific Integrated Circuit (ASIC), a Programmable Logic Device (PLD), a Field Programmable Gate Array (FPGA), and the like. It may be configured to include hardware, and a part or all of each functional block may be realized by using the hardware. For example, processor 1001 may be implemented using at least one of these hardware.
  • DSP Digital Signal Processor
  • ASIC Application Specific Integrated Circuit
  • PLD Programmable Logic Device
  • FPGA Field Programmable Gate Array
  • the terms described in the present disclosure and the terms necessary for understanding the present disclosure may be replaced with terms having the same or similar meanings.
  • channels, symbols and signals may be read interchangeably.
  • the signal may be a message.
  • the reference signal may be abbreviated as RS, and may be referred to as a pilot, a pilot signal, or the like depending on the applied standard.
  • the component carrier CC may be referred to as a cell, a frequency carrier, a carrier frequency, or the like.
  • the wireless frame may be configured by one or more periods (frames) in the time domain.
  • Each of the one or more periods (frames) constituting the radio frame may be referred to as a subframe.
  • the subframe may be composed of one or more slots in the time domain.
  • the 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 signal or channel.
  • Numerology is, for example, subcarrier interval (SubCarrier Spacing (SCS)), bandwidth, symbol length, cyclic prefix length, transmission time interval (Transmission Time Interval (TTI)), number of symbols per TTI, wireless frame configuration.
  • SCS subcarrier Spacing
  • TTI Transmission Time Interval
  • a specific filtering process performed by the transmitter / receiver in the frequency domain, a specific windowing process performed by the transmitter / receiver in the time domain, and the like may be indicated.
  • the slot may be composed of one or more symbols in the time domain (Orthogonal Frequency Division Multiplexing (OFDM) symbol, Single Carrier Frequency Division Multiple Access (SC-FDMA) symbol, etc.). Further, the slot may be a time unit based on numerology.
  • OFDM Orthogonal Frequency Division Multiplexing
  • SC-FDMA Single Carrier Frequency Division Multiple Access
  • the slot may include a plurality of mini slots. Each minislot may be composed of one or more symbols in the time domain. Further, the mini slot may be referred to as a sub slot. The minislot may consist of a smaller number of symbols than the slot.
  • the PDSCH (or PUSCH) transmitted in time units larger than the minislot may be referred to as PDSCH (PUSCH) mapping type A.
  • the PDSCH (or PUSCH) transmitted using the minislot may be referred to as PDSCH (PUSCH) mapping type B.
  • the wireless frame, subframe, slot, minislot and symbol all represent the time unit when transmitting a signal.
  • the radio frame, subframe, slot, minislot and symbol may use different names corresponding to each.
  • the time units such as frames, subframes, slots, mini slots, and symbols in the present disclosure may be read as each other.
  • one subframe may be called TTI
  • a plurality of consecutive subframes may be called TTI
  • one slot or one minislot may be called TTI. That is, at least one of the subframe and TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (eg, 1-13 symbols), or a period longer than 1 ms. May be.
  • the unit representing TTI may be called a slot, a mini slot, or the like instead of a subframe.
  • TTI refers to, for example, the minimum time unit of scheduling in wireless communication.
  • the base station schedules each user terminal to allocate radio resources (frequency bandwidth that can be used in each user terminal, transmission power, etc.) in TTI units.
  • the definition of TTI is not limited to this.
  • TTI may be a transmission time unit such as a channel-encoded data packet (transport block), a code block, or a code word, or may be a processing unit such as scheduling or link adaptation.
  • the time interval for example, the number of symbols
  • the transport block, code block, code word, etc. may be shorter than the TTI.
  • one or more TTIs may be the minimum time unit for scheduling. Further, the number of slots (number of mini-slots) constituting the minimum time unit of the scheduling may be controlled.
  • a TTI having a time length of 1 ms may be referred to as a normal TTI (TTI in 3GPP Rel. 8-12), a normal TTI, a long TTI, a normal subframe, a normal subframe, a long subframe, a slot, or the like.
  • a TTI shorter than a normal TTI may be referred to as a shortened TTI, a short TTI, a partial TTI (partial or fractional TTI), a shortened subframe, a short subframe, a minislot, a subslot, a slot, and the like.
  • the long TTI (eg, normal TTI, subframe, etc.) may be read as a TTI having a time length of more than 1 ms
  • the short TTI eg, shortened TTI, etc.
  • TTI having the above TTI length may be read as TTI having the above TTI length.
  • a resource block is a resource allocation unit in the time domain and the frequency domain, and may include one or a plurality of continuous subcarriers in the frequency domain.
  • the number of subcarriers contained in the RB may be the same regardless of the numerology, and may be, for example, 12.
  • the number of subcarriers contained in the RB may be determined based on numerology.
  • the RB may include one or more symbols in the time domain, and may have a length of 1 slot, 1 mini slot, 1 subframe or 1 TTI.
  • Each 1TTI, 1 subframe, etc. may be composed of one or a plurality of resource blocks.
  • one or more RBs are a physical resource block (Physical RB (PRB)), a sub-carrier group (Sub-Carrier Group (SCG)), a resource element group (Resource Element Group (REG)), a PRB pair, and an RB. It may be called a pair or the like.
  • PRB Physical RB
  • SCG sub-carrier Group
  • REG resource element group
  • PRB pair an RB. It may be called a pair or the like.
  • the resource block may be composed of one or a plurality of resource elements (Resource Element (RE)).
  • RE Resource Element
  • 1RE may be a radio resource area of 1 subcarrier and 1 symbol.
  • Bandwidth Part (which may also be called partial bandwidth) represents a subset of consecutive common resource blocks (RBs) for a neurology in a carrier. May be good.
  • the common RB may be specified by the index of the RB with respect to the common reference point of the carrier.
  • PRBs may be defined in a BWP and numbered within that BWP.
  • the 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 set in one carrier for the UE.
  • At least one of the configured BWPs may be active and the UE may not expect to send or receive a given signal / channel outside the active BWP.
  • “cell”, “carrier” and the like in this disclosure may be read as “BWP”.
  • the above-mentioned structures such as wireless frames, subframes, slots, mini-slots, and symbols are merely examples.
  • the number of subframes contained in a radio frame the number of slots per subframe or radioframe, the number of minislots contained within a slot, the number of symbols and RBs contained in a slot or minislot, included in the RB.
  • the number of subcarriers, the number of symbols in TTI, the symbol length, the cyclic prefix (CP) length, and other configurations can be changed in various ways.
  • the information, parameters, etc. described in the present disclosure may be expressed using absolute values, relative values from predetermined values, or using other corresponding information. It may be represented.
  • the radio resource may be indicated by a given index.
  • the information, signals, etc. described in this disclosure may be represented using any of a variety of different techniques.
  • data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description are voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any of these. It may be represented by a combination of.
  • information, signals, etc. can be output from the upper layer to the lower layer and from the lower layer to at least one of the upper layers.
  • Information, signals, etc. may be input / output via a plurality of 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. Input / output information, signals, etc. 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.
  • the notification of information is not limited to the embodiment / embodiment described in the present disclosure, and may be performed by using another method.
  • the notification of information in the present disclosure includes physical layer signaling (for example, downlink control information (DCI)), uplink control information (Uplink Control Information (UCI))), and higher layer signaling (for example, Radio Resource Control). (RRC) signaling, broadcast information (Master Information Block (MIB), System Information Block (SIB), etc.), Medium Access Control (MAC) signaling), other signals or combinations thereof. May be carried out by.
  • DCI downlink control information
  • UCI Uplink Control Information
  • RRC Radio Resource Control
  • MIB Master Information Block
  • SIB System Information Block
  • MAC Medium Access Control
  • the physical layer signaling may be referred to as Layer 1 / Layer 2 (L1 / L2) control information (L1 / L2 control signal), L1 control information (L1 control signal), and the like.
  • the RRC signaling may be referred to as 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 (MAC Control Element (CE)).
  • CE MAC Control Element
  • the notification of predetermined information is not limited to the explicit notification, but implicitly (for example, by not notifying the predetermined information or another information). May be done (by notification of).
  • the determination may be made by a value represented by 1 bit (0 or 1), or by a boolean value represented by true or false. , May be done by numerical comparison (eg, comparison with a given value).
  • Software whether called software, firmware, middleware, microcode, hardware description language, or other names, is an instruction, instruction set, code, code segment, program code, program, subprogram, software module.
  • Applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, procedures, features, etc. should be broadly interpreted.
  • software, instructions, information, etc. may be transmitted and received via a transmission medium.
  • a transmission medium For example, a website where software uses at least one of wired technology (coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), etc.) and wireless technology (infrared, microwave, etc.).
  • wired technology coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), etc.
  • wireless technology infrared, microwave, etc.
  • the terms “system” and “network” used in this disclosure may be used interchangeably.
  • the “network” may mean a device (eg, a base station) included in the network.
  • precoding "precoding weight”
  • QCL Quality of Co-Co-Location
  • TCI state Transmission Configuration Indication state
  • 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", “panel” are compatible.
  • base station BS
  • wireless base station fixed station
  • NodeB NodeB
  • eNB eNodeB
  • gNB gNodeB
  • Access point "Transmission point (Transmission Point (TP))
  • Reception point Reception Point
  • TRP Transmission / Reception Point
  • Panel , "Cell”, “sector”, “cell group”, “carrier”, “component carrier” and the like
  • Base stations are sometimes referred to by terms such as macrocells, small cells, femtocells, and picocells.
  • the base station can accommodate one or more (eg, 3) cells.
  • a base station accommodates multiple cells, the entire coverage area of the base station can be divided into multiple smaller areas, each smaller area being a base station subsystem (eg, a small indoor base station (Remote Radio). Communication services can also be provided by Head (RRH))).
  • RRH Remote Radio Head
  • the term "cell” or “sector” refers to a portion or all of the coverage area of at least one of a base station and a base station subsystem that provides communication services in this coverage.
  • MS mobile station
  • UE user equipment
  • terminal terminal
  • Mobile stations include subscriber stations, mobile units, subscriber units, wireless units, remote units, mobile devices, wireless devices, wireless communication devices, remote devices, mobile subscriber stations, access terminals, mobile terminals, wireless terminals, remote terminals. , Handset, user agent, mobile client, client or some other suitable term.
  • At least one of the base station and the mobile station may be called a transmitting device, a receiving device, a wireless communication device, or the like.
  • At least one of the base station and the mobile station may be a device mounted on the mobile body, a mobile body itself, or the like.
  • the moving body may be a vehicle (eg, car, airplane, etc.), an unmanned moving body (eg, drone, self-driving car, etc.), or a robot (manned or unmanned). ) May be.
  • at least one of the base station and the mobile station includes a device that does not necessarily move during communication operation.
  • 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
  • the base station in the present disclosure may be read by the user terminal.
  • the communication between the base station and the user terminal is replaced with the communication between a plurality of 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 to the configuration.
  • the user terminal 20 may have the function of the base station 10 described above.
  • the words such as "up” and “down” may be read as words corresponding to the communication between terminals (for example, "side”).
  • the upstream channel, the downstream channel, and the like may be read as a side channel.
  • the user terminal in the present disclosure may be read as a base station.
  • the base station 10 may have the functions of the user terminal 20 described above.
  • the operation performed by the base station may be performed by its upper node (upper node) in some cases.
  • various operations performed for communication with a terminal are a base station, one or more network nodes other than the base station (for example,).
  • Mobility Management Entity (MME), Serving-Gateway (S-GW), etc. can be considered, but it is not limited to these), or it is clear that it can be performed by a combination thereof.
  • Each aspect / embodiment described in the present disclosure may be used alone, in combination, or may be switched and used according to the execution. Further, the order of the processing procedures, sequences, flowcharts, etc. of each aspect / embodiment described in the present disclosure may be changed as long as there is no contradiction. For example, the methods described in the present disclosure present elements of various steps using exemplary order, and are not limited to the particular order presented.
  • LTE Long Term Evolution
  • LTE-A LTE-Advanced
  • SUPER 3G IMT-Advanced
  • 4G 4th generation mobile communication system
  • 5G 5th generation mobile communication system
  • 6G 6th generation mobile communication system
  • xG xG (xG (x is, for example, an integer or a fraction)
  • 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
  • UMB Ultra Mobile Broadband
  • LTE 802.11 Wi-Fi®
  • LTE 802.16 WiMAX®
  • LTE 802.20 Ultra-WideBand (UWB), Bluetooth®, and other suitable radios.
  • UMB Ultra Mobile Broadband
  • references to elements using designations such as “first” and “second” as used in this disclosure does not generally limit the quantity or order of those elements. These designations can be used in the present disclosure as a convenient way to distinguish between two or more elements. Thus, references to the first and second elements do not mean that only two elements can be adopted or that the first element must somehow precede the second element.
  • determining used in this disclosure may include a wide variety of actions.
  • judgment (decision) means judgment (judging), calculation (calculating), calculation (computing), processing (processing), derivation (deriving), investigation (investigating), search (looking up, search, inquiry) ( For example, searching in a table, database or another data structure), ascertaining, etc. may be considered to be "judgment”.
  • judgment (decision) includes receiving (for example, receiving information), transmitting (for example, transmitting information), input (input), output (output), and access (for example). It may be regarded as “determining” such as accessing) (for example, accessing data in memory).
  • judgment (decision) is regarded as “judgment (decision)” of solving, selecting, selecting, establishing, comparing, and the like. May be good. That is, “judgment (decision)” may be regarded as “judgment (decision)” of some action.
  • the "maximum transmission power" described in the present disclosure may mean the maximum value of the transmission power, may mean the nominal UE maximum transmit power, or may mean the rated maximum transmission power (the). It may mean rated UE maximum transmit power).
  • connection are any direct or indirect connections or connections between two or more elements. Means, and can include the presence of one or more intermediate elements between two elements that are “connected” or “bonded” to each other.
  • the connection or connection between the elements may be physical, logical, or a combination thereof. For example, "connection” may be read as "access”.
  • the radio frequency domain microwaves. It can be considered to be “connected” or “coupled” to each other using frequency, electromagnetic energy having wavelengths in the region, light (both visible and invisible) regions, and the like.
  • the term "A and B are different” may mean “A and B are different from each other”.
  • the term may mean that "A and B are different from C”.
  • Terms such as “separate” and “combined” may be interpreted in the same way as “different”.

Landscapes

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

Abstract

Selon un aspect, la présente invention concerne un terminal comprenant : une unité de réception qui reçoit un ou plusieurs éléments d'information pour définir un signal de référence d'informations d'état de canal (CSI-RS) périodique ; et une unité de commande qui commande la réception d'un élément de commande de contrôle d'accès au support (MAC CE) comprenant un ou plusieurs bits. Le ou les bits correspondent respectivement à l'élément d'information ou aux éléments d'information. Le ou les bits représentent chacun l'activation ou la désactivation d'un élément d'information correspondant parmi les éléments d'information. Le ou les éléments d'information représentent chacun une ressource CSI-RS ou un ensemble de ressources CSI-RS. Selon un aspect de la présente invention, il est possible d'efficacement utiliser une ressource P-CSI-RS.
PCT/JP2020/027015 2020-07-10 2020-07-10 Terminal, procédé de communication sans fil et station de base WO2022009417A1 (fr)

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PCT/JP2020/027015 WO2022009417A1 (fr) 2020-07-10 2020-07-10 Terminal, procédé de communication sans fil et station de base
JP2022534870A JPWO2022009417A1 (fr) 2020-07-10 2020-07-10

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024057523A1 (fr) * 2022-09-16 2024-03-21 株式会社Ｎｔｔドコモ Terminal, procédé de communication sans fil et station de base

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019511853A (ja) * 2016-01-28 2019-04-25 クゥアルコム・インコーポレイテッドＱｕａｌｃｏｍｍ Ｉｎｃｏｒｐｏｒａｔｅｄ Ｆｄ−ｍｉｍｏのためのエネルギ効率の良いｃｓｉ測定
US20190296805A1 (en) * 2018-03-26 2019-09-26 Yeongmoon SON Method and apparatus to receive and transmit data in a mobile communication system
US20200068463A1 (en) * 2017-05-05 2020-02-27 Telefonaktiebolaget Lm Ericsson (Publ) Channel state information reference signal (csi-rs) configuration activation before handover completion

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019511853A (ja) * 2016-01-28 2019-04-25 クゥアルコム・インコーポレイテッドＱｕａｌｃｏｍｍ Ｉｎｃｏｒｐｏｒａｔｅｄ Ｆｄ−ｍｉｍｏのためのエネルギ効率の良いｃｓｉ測定
US20200068463A1 (en) * 2017-05-05 2020-02-27 Telefonaktiebolaget Lm Ericsson (Publ) Channel state information reference signal (csi-rs) configuration activation before handover completion
US20190296805A1 (en) * 2018-03-26 2019-09-26 Yeongmoon SON Method and apparatus to receive and transmit data in a mobile communication system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024057523A1 (fr) * 2022-09-16 2024-03-21 株式会社Ｎｔｔドコモ Terminal, procédé de communication sans fil et station de base

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