WO2020148839A1 - Terminal utilisateur et procédé de communication sans fil - Google Patents

Terminal utilisateur et procédé de communication sans fil Download PDF

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Publication number
WO2020148839A1
WO2020148839A1 PCT/JP2019/001151 JP2019001151W WO2020148839A1 WO 2020148839 A1 WO2020148839 A1 WO 2020148839A1 JP 2019001151 W JP2019001151 W JP 2019001151W WO 2020148839 A1 WO2020148839 A1 WO 2020148839A1
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Prior art keywords
csi
transmission
trp
user terminal
unit
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PCT/JP2019/001151
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English (en)
Japanese (ja)
Inventor
祐輝 松村
聡 永田
ジュンシン ワン
ジン ワン
ギョウリン コウ
Original Assignee
株式会社Ｎｔｔドコモ
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Application filed by 株式会社Ｎｔｔドコモ filed Critical 株式会社Ｎｔｔドコモ
Priority to JP2020566026A priority Critical patent/JP7343957B2/ja
Priority to PCT/JP2019/001151 priority patent/WO2020148839A1/fr
Publication of WO2020148839A1 publication Critical patent/WO2020148839A1/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
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports

Definitions

  • the present disclosure relates to a user terminal and a wireless communication method in a next-generation mobile communication system.
  • LTE Long Term Evolution
  • 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), New Radio (NR), 3GPP Rel.15 or later) is also under consideration.
  • 5G 5th generation mobile communication system
  • 5G+(plus) 5th generation mobile communication system
  • NR New Radio
  • 3GPP Rel.15 or later 3th generation mobile communication system
  • the user terminal In the existing LTE system (for example, LTE Rel.8-14), the user terminal (User Equipment (UE)) has downlink control information transmitted via a downlink control channel (for example, Physical Downlink Control Channel (PDCCH)). Controls the reception of downlink shared channels (for example, Physical Downlink Shared Channel (PDSCH)) based on (also called Downlink Control Information (DCI), DL assignment, etc.). Further, the user terminal controls transmission of an uplink shared channel (for example, Physical Uplink Shared Channel (PUSCH)) based on DCI (also referred to as UL grant).
  • a downlink control channel for example, Physical Downlink Control Channel (PDCCH)
  • PDSCH Physical Downlink Shared Channel
  • DCI Downlink Control Information
  • PUSCH Physical Uplink Shared Channel
  • a user terminal In an existing LTE system (for example, LTE Rel. 8-13), a user terminal (User Equipment (UE)) periodically and/or aperiodically transmits channel state information (Channel State Information (UE)) to a base station.
  • CSI Channel State Information
  • the UE transmits the CSI using an uplink control channel (Physical Uplink Control Channel (PUCCH)) and/or an uplink shared channel (Physical Uplink Shared Channel (PUSCH)).
  • PUCCH Physical Uplink Control Channel
  • PUSCH Physical Uplink Shared Channel
  • E-UTRA Evolved Universal Terrestrial Radio Access
  • E-UTRAN Evolved Universal Terrestrial Radio Access Network
  • the channel state information differs between multiple transmission points. If CSI reporting is not properly performed to a plurality of transmission points, communication quality may deteriorate.
  • an object of the present disclosure is to provide a user terminal and a wireless communication method that appropriately perform CSI reporting to a plurality of transmission points.
  • a user terminal receives a setting information regarding a plurality of channel state information (CSI) reports respectively corresponding to a plurality of transmission points, and receives at least one instruction regarding the plurality of CSI reports. And a control unit that performs the plurality of CSI reports based on the at least one instruction.
  • CSI channel state information
  • FIG. 1A-1C are diagrams illustrating an example of multiple TRP transmissions.
  • FIG. 2 is a diagram showing an example of mapping of resource settings and report settings.
  • FIG. 3 is a diagram illustrating an example of a method of triggering or activating a CSI report for CSI-RS configuration.
  • FIG. 4 is a diagram showing an example of resource settings and report settings corresponding to a plurality of TRPs.
  • 5A to 5D are diagrams illustrating an example of an operation of multiple TRP transmission.
  • FIG. 6 is a diagram showing an example of the mapping of report settings among a plurality of TRPs.
  • FIG. 7 is a diagram illustrating an example of an upper layer parameter indicating mapping of report settings between a plurality of TRPs.
  • FIG. 8 is a diagram showing an example of a schematic configuration of a wireless communication system according to an embodiment.
  • FIG. 9 is a diagram illustrating an example of the configuration of the base station according to the embodiment.
  • FIG. 10 is a diagram illustrating an example of the configuration of the user terminal according to the embodiment.
  • FIG. 11 is a diagram illustrating an example of hardware configurations of a base station and a user terminal according to an embodiment.
  • Non-coherent DL for example, PDSCH
  • NCJT Non-Coherent Joint Transmission
  • a transmission point may be read as a transmission/reception point (Transmission/Reception Point: TRP), a panel (panel, an antenna panel, a plurality of antenna elements), an antenna, an antenna port, or a cell.
  • TRP Transmission/Reception Point
  • the transmission point (TRP, panel, etc.) is, for example, a beam, a spatial filter, a Reference Signal (RS) resource, a pseudo collocation (Quasi Co-Location (QCL)), a transmission configuration indication (Transmission Configuration Indication (TCI)), or those. Can be replaced by the concept of grouping.
  • DCI Downlink Control Information
  • PDCCH Physical Downlink Control Channel
  • PDSCHs transmitted from different transmission points to the same resource (for example, time and frequency resource) and transmit the same.
  • a configuration for transmitting PDSCHs corresponding to the same codeword (CW) in different layers see FIG. 1A
  • CWs corresponding to different CWs see FIG. 1B
  • the PDSCH (corresponding to CW#1) transmitted from the first transmission point uses at least one of layers 1 and 2 and the PDSCH (corresponding to CW#1) transmitted from the second transmission point. ) Is assigned to the same time and frequency resource using at least one of layers 3 and 4.
  • multiple PDSCHs may be transmitted in different Multiple Input Multiple Output (MIMO) layers. Also, the time resources and frequency resources of multiple PDSCHs may overlap.
  • MIMO Multiple Input Multiple Output
  • the UE may set communication using multiple TRPs (for example, multiple TRP transmissions) by upper layer signaling (configuration information). For communication using a plurality of TRPs, the UE may be notified of information (at least one of higher layer signaling and DCI) indicating allocation of a plurality of resources respectively corresponding to the plurality of TRPs.
  • information at least one of higher layer signaling and DCI
  • -A plurality of TRPs may belong to a synchronous network or may belong to an asynchronous network. Further, a plurality of TRPs may be connected via an ideal backhaul or a non-ideal backhaul.
  • BWP BWP
  • a carrier Component carrier (Component Carrier: 100 to 800 MHz)
  • having a wider bandwidth eg, 100 to 800 MHz
  • an existing LTE system eg, LTE Rel.8-13
  • CC cell or system band, etc.
  • a user terminal also referred to as Wideband (WB) UE, single carrier WB UE, etc.
  • WB Wideband
  • BW Bandwidth
  • Each frequency band (for example, 50 MHz or 200 MHz) in the carrier is called a partial band or a bandwidth part (BWP).
  • the activation or deactivation of BWP may be controlled.
  • activation of the BWP means that the BWP is in a usable state (or transits to the usable state), and activation of BWP setting information (configuration) (BWP setting information) or Also called activation etc.
  • the deactivation of the BWP means that the BWP is in an unusable state (or transits to the unusable state), and is also called deactivation or invalidation of the BWP setting information. Scheduling the BWP will activate the BWP. Further, activation or deactivation of at least one of the plurality of BWPs may be controlled.
  • the UE may be configured for CSI with at least one resource setting (CSI-RS resource configuration) and at least one reporting setting (CSI reporting configuration). It is prescribed.
  • the UE may set resource settings #0, #1, and #2 by an upper layer parameter (for example, CSI-ResourceConfig).
  • Each resource setting may include multiple CSI-RS resource sets (eg, CSI-RS resource sets #0, #1, #2).
  • Each CSI-RS resource set may include multiple CSI-RS resources.
  • the UE may configure multiple report settings #0, #1 by upper layer parameters (eg CSI-ReportConfig).
  • Report setting #0 may be associated with resource settings #0, #1
  • report setting #1 may be associated with resource settings #0, #2.
  • CSI-RS CSI-RS resource
  • P-CSI-RS periodic CSI-RS
  • SP-CSI-RS semi-persistent CSI-RS
  • A-CSI-RS aperiodic CSI-RS
  • the periodic CSI (P-CSI) report, the semi-persistent CSI (SP-CSI) report, and the aperiodic CSI (A-CSI) report are supported as CSI reports.
  • SP-CSI reports SP-CSI reporting on PUCCH (SP-CSI Reporting on PUCCH) and SP-CSI reporting on PUSCH (SP-CSI Reporting on PUSCH) are supported.
  • Figure 3 shows Rel. 16 is a diagram showing an example of a method of triggering or activating a CSI report for CSI-RS configuration in FIG.
  • SRS Sounding Reference Signal
  • SP-SRS Sounding Reference Signal
  • A-SRS CSI reports are classified into P-CSI reports, SP-CSI reports, and A-CSI reports. Good.
  • P-CSI-RS When P-CSI-RS is set as CSI-RS setting, P-CSI report, SP-CSI report on PUCCH, SP-CSI report on PUSCH, and A-CSI report are supported.
  • the P-CSI report is set by the RRC parameter and the UE does not receive any dynamic triggering or activation.
  • the UE receives an activation command for reporting on PUCCH by MAC CE, or receives a trigger on DCI for reporting on PUSCH.
  • the DCI is a cyclic redundancy check by a Radio Network Temporary Identifier (RNTI) for reporting SP-CSI (eg, SP-CSI-RNTI, SP-CSI C-RNTI (SP-CSI Cell-RNTI)). It may be DCI with (Cyclic Redundancy Check: CRC) bits masked (scrambled).
  • CRC Cyclic Redundancy Check
  • the UE stops SP-CSI-RS measurement and SP-CSI reporting when it receives a predetermined deactivation (release) signal or when a predetermined timer started by an activation command (trigger) expires. You may.
  • A-CSI reporting is triggered by DCI.
  • the A-CSI report may use an activation command.
  • SP-CSI-RS When SP-CSI-RS is set as the CSI-RS setting, SP-CSI report on PUCCH, SP-CSI report on PUSCH, and A-CSI report are supported.
  • A-CSI-RS is set as the CSI-RS setting, A-CSI reporting is supported.
  • CSIs are required for different TRPs.
  • Rel. In C.15 CSI for one TRP is defined, and therefore, in communication using a plurality of TRPs, it is not clear how to report and set CSI for a plurality of TRPs.
  • the inventors have conceived the operation of setting (eg, resource setting, report setting) or instruction (eg, activation, deactivation, or trigger) of a plurality of CSI reports respectively corresponding to a plurality of transmission points. did.
  • the upper layer signaling may be, for example, any of Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling, broadcast information, or the like, or a combination thereof.
  • RRC Radio Resource Control
  • MAC Medium Access Control
  • the broadcast information includes, for example, a master information block (MIB), a system information block (SIB), minimum system information (Remaining Minimum System Information: RMSI), and other system information (Other System Information). : OSI) or the like.
  • MIB master information block
  • SIB system information block
  • RMSI Remaining Minimum System Information
  • OSI OSI
  • TRP transmission point
  • DMRS port group MIMO layer
  • panel cell
  • carrier component carrier
  • PDSCH codeword
  • base station base station
  • beam beam
  • New information such as new DCI field, new RNTI, etc. is specified in a specific release (eg, Rel. 16 or later) and is not specified in a release older than the specific release (eg, Rel. 15). It may be read as information.
  • the UE may be configured with multiple CSI reports (report settings) corresponding to multiple TRPs.
  • the UE may be configured with the resource setting and report setting for TRP#0, and may be configured with the resource setting and report setting for TRP#1.
  • the UE may be set to resource settings #0, #1 and #2 for TRP #0 and may be set to report settings #0 and #1 for TRP #0.
  • the report setting #0 for TRP#0 is associated with the resource settings #0, #1 for TRP#0
  • the report setting #1 for TRP#0 is the resource settings #0, #2 for TRP#0. May be associated with.
  • the UE may be configured to set resource settings #0, #1 and #2 for TRP#1 and report settings #0 and #1 for TRP#1.
  • the report setting #0 for TRP#1 is associated with the resource settings #0, #1 for TRP#1
  • the report setting #1 for TRP#1 is the resource settings #0, #2 for TRP#1. May be associated with.
  • the UE may receive the PDCCH from at least one of the TRPs according to at least one of the following Embodiments 1-1 and 1-2.
  • the UE may receive multiple PDCCHs from multiple TRPs, respectively.
  • the PDCCH from each TRP may schedule corresponding data (one PUSCH sent to the corresponding TRP or one PDSCH sent from the corresponding TRP).
  • TRP#0 transmits DCI#1 that schedules PDSCH
  • TRP#1 transmits DCI#2 that schedules PDSCH (mode, type, etc.).
  • DCI#2 may be transmitted in the same slot as DCI#1.
  • the UE may be configured to receive multiple PDCCHs from multiple TRPs by an upper layer parameter.
  • the UE may trigger, activate, or deactivate the corresponding CSI report by DCI or MAC CE. Regardless of how many PUCCHs or PUSCHs are used for CSI reporting, the UE may trigger, activate, or deactivate the corresponding CSI report by DCI or MAC CE (the corresponding CSI report triggers). , May be considered activated or deactivated).
  • At least one of activation, deactivation, and trigger can be appropriately performed on a plurality of CSI reports corresponding to a plurality of TRPs. Further, by sending an instruction corresponding to each of the plurality of TRPs, at least one of activation, deactivation, and trigger can be flexibly performed.
  • the UE may receive the PDCCH from one of the TRPs.
  • the PDCCH may schedule a plurality of data (a plurality of PUSCHs respectively transmitted to a plurality of TRPs or a plurality of PDSCHs respectively transmitted from a plurality of TRPs) corresponding to each of a plurality of TRPs.
  • TRP#0 may transmit DCI, and the DCI may schedule data corresponding to TRP#0.
  • FIG. 5B it may be a case in which TRP#0 transmits DCI and the DCI schedules two data corresponding to TRP#0 and TRP#1, respectively.
  • TRP#0 transmits DCI part 1
  • TRP#1 transmits DCI part 2
  • DCI part 1 and DCI part 2 correspond to TRP#0 and #1. It may be a case of scheduling two data.
  • DCI part 2 may depend on DCI part 1.
  • the DCI part 1 may include auxiliary information for decoding the DCI part 2.
  • DCI part 2 may be transmitted in the same slot as DCI part 1.
  • the UE may trigger, activate or deactivate CSI reporting according to at least one of the following embodiments 1-2-1 to 1-2-3 (CSI reporting is triggered, activated or deactivated). May be considered).
  • the UE may activate or deactivate the SP-CSI report on the PUCCH.
  • UE may activate SP-CSI reporting on PUCCH according to at least one of the following alternatives 1a, 1b:
  • the UE may be independently activated with a plurality of CSI reports respectively corresponding to a plurality of TRPs.
  • the UE may activate the CSI reporting index by the corresponding MAC CE.
  • the MAC CE may be sent from the corresponding TRP (using the corresponding DMRS port group).
  • the UE may feed back the X CSIs when the X CSI reports are activated by the X MAC CEs.
  • the UE When the UE is allowed to send at most Y CSI reports to one MAC CE, for example, the UE allows at most 2Y CSI reports to two TRPs (two DMRS port groups). May be done.
  • the UE may collectively activate a plurality of CSI reports respectively corresponding to a plurality of TRPs.
  • the UE may be activated with CSI reporting by one MAC CE from one TRP.
  • the CSI-RS resources eg, SP-CSI-RS resources
  • the CSI -SP-CSI reporting corresponding to only TRPs with RS resources configured may be activated.
  • the UE may determine at least one of CSI-RS resource and CSI report for at least one TRP based on the mapping between report settings for different TRPs (Embodiment 2 described below). For example, when one CSI report is activated by one MAC CE from one TRP, the UE may activate the CSI report mapped to the CSI report.
  • the UE may deactivate the SP-CSI report on PUCCH.
  • the UE may deactivate the SP-CSI report on the PUCCH according to at least one of the following alternatives 2a-2c.
  • the UE may independently deactivate multiple CSI reports, each corresponding to multiple TRPs.
  • the UE deactivates the SP-CSI report when the DL BWP or UL BWP for the PDSCH (MAC CE) corresponding to the TRP is changed while the SP-CSI report for one TRP is activated. May be done.
  • the UE may collectively deactivate a plurality of CSI reports respectively corresponding to a plurality of TRPs.
  • the UE may deactivate all SP-CSI reports if at least one of the BWPs is changed while the SP-CSI reports are activated.
  • the UE may collectively deactivate a plurality of CSI reports respectively corresponding to a plurality of TRPs.
  • the UE may deactivate all CSI reports with one MAC CE from one TRP.
  • the SP-CSI report for the other TRP may also be deactivated.
  • the UE may activate SP-CSI reporting on PUSCH.
  • the UE may activate SP-CSI reporting on PUSCH according to at least one of the following alternatives 1a, 1b.
  • the UE may be independently activated with a plurality of CSI reports respectively corresponding to a plurality of TRPs.
  • the UE may be activated with one or more CSI reports by multiple values of DCI (eg, new DCI field).
  • the CSI request field or CRC of the DCI may be scrambled by a specific RNTI (eg, SP-CSI-RNTI, new RNTI).
  • the size (length) of the CSI request field in the DCI is defined by the upper layer parameter reportTriggerSize to any of 0, 1, 2, 3, 4, 5, 6 bits.
  • the size (length) of the CSI request field may be 0, 2, 4, 6, 8, 10, 12 depending on an upper layer parameter (eg, reportTriggerSize). It may be defined in any of the bits.
  • the UE may collectively activate a plurality of CSI reports respectively corresponding to a plurality of TRPs.
  • the UE may activate multiple CSI reports respectively corresponding to multiple TRPs with the same DCI (eg, existing DCI field, CSI request field).
  • the CSI request field or CRC of the DCI may be scrambled by a specific RNTI (eg, SP-CSI-RNTI, new RNTI).
  • the UE may deactivate SP-CSI reporting on PUSCH.
  • the UE may deactivate the SP-CSI report on the PUCCH according to at least one of the following alternatives 2a-2c.
  • the UE may independently deactivate multiple CSI reports, each corresponding to multiple TRPs.
  • the UE may deactivate the SP-CSI report when the DL BWP or UL BWP for the PDCCH corresponding to the TRP is changed while the SP-CSI report for one TRP is activated. ..
  • the UE may collectively deactivate a plurality of CSI reports respectively corresponding to a plurality of TRPs.
  • the UE may deactivate all SP-CSI reports if at least one of the BWPs is changed while the SP-CSI reports are activated.
  • the UE may collectively deactivate a plurality of CSI reports respectively corresponding to a plurality of TRPs.
  • the UE may deactivate all CSI reports with one PDCCH from one TRP.
  • the SP-CSI report for the two TRPs is activated, the SP-CSI report for the other TRP may also be deactivated.
  • the UE may be triggered with an A-CSI report.
  • the UE may be triggered an A-CSI report according to at least one of the following alternatives 1,2:
  • the UE may be independently triggered with multiple CSI reports respectively corresponding to multiple TRPs.
  • the UE may be triggered one or more CSI reports by multiple values of DCI (eg, new DCI field).
  • the CSI request field or CRC of the DCI may be scrambled by a specific RNTI (eg, SP-CSI-RNTI, new RNTI).
  • the size (length) of the CSI request is defined in any of 0, 1, 2, 3, 4, 5, 6 bits by the upper layer parameter reportTriggerSize.
  • the size (length) of the CSI request is 0, 2, 4, 6, 8, 10, 12 bits depending on the upper layer parameter (eg, reportTriggerSize). May be defined in any of
  • the UE may be triggered collectively by multiple CSI reports respectively corresponding to multiple TRPs.
  • the UE may trigger multiple CSI reports for multiple TRPs with the same DCI (eg, existing DCI field, CSI request field).
  • the CSI request field or CRC of the DCI may be scrambled by a specific RNTI (eg, SP-CSI-RNTI, new RNTI).
  • At least one of activation, deactivation, and trigger can be appropriately performed on a plurality of CSI reports corresponding to a plurality of TRPs. Moreover, since at least one of activation, deactivation and trigger is performed using one PDCCH or MAC CE, signaling overhead can be suppressed.
  • the UE may use the mapping between multiple reporting settings for different TRPs to determine at least one reporting setting.
  • the UE is configured with a mapping between CSI-RS resource settings and reporting settings, as shown in FIG.
  • the UE may use the mapping between different reporting settings as shown in FIG.
  • reporting setting #0 for TRP#0 is associated with the reporting setting #1 for TRP#1
  • the UE activates, deactivates, or triggers the reporting setting #0 for TRP#0.
  • report setting #1 for TRP#1 associated with that report setting may be activated, deactivated, or triggered.
  • the UE may be configured with mapping according to at least one of the following Embodiments 2-1 and 2-2.
  • the UE can determine the report setting for at least one TRP using the mapping. Moreover, since it is not necessary to notify the UE of information regarding mapping, signaling overhead can be suppressed.
  • the UE may use an implicit mapping between reporting settings for different TRPs.
  • the UE may activate reporting settings by at least one of the following alternatives 1, 2.
  • the UE may similarly deactivate or trigger reporting settings.
  • the same report setting ID may be associated with each other between different TRPs.
  • the UE may also activate the report setting #X of TRP#j (the same report setting ID).
  • Report setting IDs between different TRPs may be related by a particular formula.
  • N may be the total number of reporting settings.
  • the UE may use an explicit mapping between the reporting settings for the UE.
  • the UE may be configured with a mapping between multiple reporting settings by higher layer parameters.
  • the UE may report to another TRP's reporting setting associated with that reporting setting based on the mapping.
  • the same instructions may be applied.
  • the upper layer parameter (RRC information element, eg, CSI-MeasConfig) of the report setting for the case of using multiple TRPs is information indicating the mapping of the report setting (eg, L1 (layer 1, CSI-SemiPersistentOnPUSCH-TriggerStateList), a list of trigger states for SP-CSI reporting in DCI).
  • This list may indicate the ID (eg, CSI-SemiPersistentOnPUSCH-TriggerState, CSI-ReportConfigId) of the report setting (CSI report setting) of another TRP associated with the report mapping.
  • the associated report setting ID shown in the list for TRP#0 may indicate the report setting ID set for TRP#1.
  • the associated report setting ID shown in the list for TRP#1 may indicate the report setting ID set for TRP#0.
  • the UE can determine the report setting for at least one TRP by using the mapping.
  • the mapping can be set flexibly.
  • wireless communication system Wireless communication system
  • communication is performed using any of the wireless communication methods according to the above-described embodiments of the present disclosure or a combination thereof.
  • FIG. 8 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 by 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 multiple Radio Access Technologies (RATs).
  • MR-DC has dual connectivity (E-UTRA-NR Dual Connectivity (EN-DC)) with LTE (Evolved Universal Terrestrial Radio Access (E-UTRA)) and NR, and dual connectivity (NR-E) with NR and LTE.
  • E-UTRA-NR Dual Connectivity EN-DC
  • NR-E Dual Connectivity
  • NE-DC Dual Connectivity
  • the base station (eNB) of LTE (E-UTRA) is the master node (Master Node (MN)), and the base station (gNB) of NR is the secondary node (Secondary Node (SN)).
  • the NR base station (gNB) is the MN, and the LTE (E-UTRA) base station (eNB) is the SN.
  • the wireless communication system 1 has dual connectivity between a plurality of base stations within 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.
  • dual connectivity NR-NR Dual Connectivity (NN-DC)
  • N-DC dual connectivity
  • MN and SN are NR base stations (gNB).
  • the wireless communication system 1 includes a base station 11 forming a macro cell C1 having a relatively wide coverage and a base station 12 (12a-12c) arranged in the macro cell C1 and forming a small cell C2 narrower than the macro cell C1. You may prepare.
  • the user terminal 20 may be located in at least one cell. The arrangement and number of each cell and user terminal 20 are not limited to those 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 the plurality of base stations 10.
  • the user terminal 20 may use at least one of carrier aggregation (Carrier Aggregation (CA)) using multiple component carriers (Component Carrier (CC)) and dual connectivity (DC).
  • CA Carrier Aggregation
  • CC Component Carrier
  • DC dual connectivity
  • Each CC may be included in at least one of the first frequency band (Frequency Range 1 (FR1)) and the second frequency band (Frequency Range 2 (FR2)).
  • the macro cell 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 FR2 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 in each CC using at least one of Time Division Duplex (TDD) and Frequency Division Duplex (FDD).
  • 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 the base stations 11 and 12, the base station 11 corresponding to the upper station is the Integrated Access Backhaul (IAB) donor, and the base station 12 corresponding to the relay station (relay) is the 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 of, for example, 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 compatible with at least one of communication methods such as LTE, LTE-A, and 5G.
  • an orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing (OFDM)) based wireless access method may be used.
  • OFDM Orthogonal Frequency Division Multiplexing
  • DL Downlink
  • UL Uplink
  • 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.
  • other wireless access methods such as another single carrier transmission method and another multicarrier transmission method may be used as the UL and DL wireless access methods.
  • downlink shared channels Physical Downlink Shared Channel (PDSCH)
  • broadcast channels Physical Broadcast Channel (PBCH)
  • downlink control channels Physical Downlink Control
  • an uplink shared channel Physical Uplink Shared Channel (PUSCH)
  • an uplink control channel Physical Uplink Control Channel (PUCCH)
  • a random access channel that are shared by each user terminal 20.
  • Physical Random Access Channel (PRACH) Physical Random Access Channel
  • 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 the PDCCH.
  • the lower layer control information may include downlink control information (Downlink Control Information (DCI)) including scheduling information of at least one of PDSCH and PUSCH, for example.
  • DCI Downlink Control Information
  • DCI for scheduling PDSCH may be referred to as DL assignment, DL DCI, etc.
  • DCI for scheduling PUSCH may be referred to as UL grant, UL DCI, etc.
  • PDSCH may be replaced with DL data
  • PUSCH may be replaced with UL data.
  • a control resource set (COntrol REsource SET (CORESET)) and a search space (search space) may be used to detect the PDCCH.
  • CORESET corresponds to a resource for searching DCI.
  • the search space corresponds to the search area and the search method of the PDCCH candidates.
  • One CORESET may be associated with one or more search spaces. The UE may monitor 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” and the like of the present disclosure may be read as each other.
  • channel state information (Channel State Information (CSI)
  • delivery confirmation information for example, Hybrid Automatic Repeat reQuest ACKnowledgement (HARQ-ACK), ACK/NACK, etc.
  • scheduling request (Scheduling Request (Scheduling Request ( Uplink Control Information (UCI) including at least one of (SR))
  • CSI Channel State Information
  • HARQ-ACK Hybrid Automatic Repeat reQuest ACKnowledgement
  • ACK/NACK ACK/NACK
  • scheduling request Scheduling Request (Scheduling Request ( Uplink Control Information (UCI) including at least one of (SR)
  • a random access preamble for establishing a connection with a cell may be transmitted by the PRACH.
  • downlink, uplink, etc. may be expressed without adding “link”. Further, it may be expressed without adding “Physical” to the head of each channel.
  • a synchronization signal (Synchronization Signal (SS)), a downlink reference signal (Downlink Reference Signal (DL-RS)), etc. may be transmitted.
  • a DL-RS 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 demodulation reference signal (DeModulation) Reference Signal (DMRS), Positioning Reference Signal (PRS), Phase Tracking Reference Signal (PTRS), etc.
  • CRS Cell-specific Reference Signal
  • CSI-RS Channel State Information Reference Signal
  • DMRS Demodulation 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)).
  • a signal block including SS (PSS, SSS) and PBCH (and DMRS for PBCH) may be referred to as an SS/PBCH block, SS Block (SSB), or the like. Note that SS and SSB may also be referred to as reference signals.
  • the wireless communication system even if the measurement reference signal (Sounding Reference Signal (SRS)), the demodulation reference signal (DMRS), etc. are transmitted as the uplink reference signal (Uplink Reference Signal (UL-RS)). Good.
  • the DMRS may be called a user terminal specific reference signal (UE-specific Reference Signal).
  • FIG. 9 is a diagram illustrating an example of the configuration of the base station according to the 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. It should be noted that the control unit 110, the transmission/reception unit 120, the transmission/reception antenna 130, and the transmission path interface 140 may each be provided with one or more.
  • the functional blocks of the characteristic part in the present embodiment are 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 unit described below may be omitted.
  • the control unit 110 controls the entire base station 10.
  • the control unit 110 can be configured by a controller, a control circuit, and the like described based on common recognition in the technical field of 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 using the transmission/reception unit 120, the transmission/reception antenna 130, and the transmission path interface 140, measurement, and the like.
  • the control unit 110 may generate data to be transmitted as a signal, control information, a sequence, etc., and transfer the generated data to the transmission/reception unit 120.
  • the control unit 110 may perform communication channel call processing (setting, release, etc.), state management of the base station 10, wireless resource management, 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 transmission/reception unit 120 includes a transmitter/receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transmission/reception circuit, etc., which are explained based on 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 configured by a transmission unit and a reception unit.
  • the transmitting unit may include a transmission processing unit 1211 and an RF unit 122.
  • the receiving unit may include a reception processing unit 1212, an RF unit 122, and a measuring unit 123.
  • the transmission/reception antenna 130 can be configured by an antenna described based on common recognition in the technical field according to the present disclosure, for example, an array antenna or the like.
  • the transmitting/receiving unit 120 may transmit the above-mentioned downlink channel, synchronization signal, downlink reference signal, and the like.
  • the transmitter/receiver 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), or the like.
  • digital beamforming for example, precoding
  • analog beamforming for example, phase rotation
  • the transmission/reception unit 120 processes the Packet Data Convergence Protocol (PDCP) layer and the Radio Link Control (RLC) layer (for example, for data and control information acquired from the control unit 110) (for example, RLC retransmission control), Medium Access Control (MAC) layer processing (for example, HARQ retransmission control), etc. may be performed to generate a bit string to be transmitted.
  • PDCP Packet Data Convergence Protocol
  • RLC Radio Link Control
  • MAC Medium Access Control
  • the transmission/reception unit 120 performs channel coding (may include error correction coding), modulation, mapping, filtering, and discrete Fourier transform (Discrete Fourier Transform (DFT)) on the bit string to be transmitted. Processing (as necessary), inverse fast Fourier transform (Inverse Fast Fourier Transform (IFFT)) processing, precoding, digital-analog conversion, and other transmission processing may be performed to output the baseband signal.
  • channel coding may include error correction coding
  • modulation modulation
  • mapping mapping
  • filtering discrete Fourier transform
  • DFT discrete Fourier Transform
  • IFFT inverse fast Fourier transform
  • precoding coding
  • digital-analog conversion digital-analog conversion
  • the transmitter/receiver 120 may perform modulation, filtering, amplification, etc. on the baseband signal in a radio frequency band, and transmit the radio frequency band signal via the transmission/reception antenna 130. ..
  • the transmission/reception unit 120 may perform amplification, filtering, demodulation to a baseband signal, etc., on the signal in the radio frequency band received by the transmission/reception antenna 130.
  • the transmission/reception unit 120 performs analog-digital conversion, fast Fourier transform (Fast Fourier Transform (FFT)) processing, and inverse discrete Fourier transform (Inverse Discrete Fourier Transform (IDFT) on the acquired baseband signal. ))
  • FFT Fast Fourier transform
  • IDFT inverse discrete Fourier transform
  • Apply reception processing such as processing (if necessary), filtering, demapping, demodulation, decoding (may include error correction decoding), MAC layer processing, RLC layer processing and PDCP layer processing, User data and the like may be acquired.
  • 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, etc. based on the received signal.
  • the measurement unit 123 receives power (for example, Reference Signal Received Power (RSRP)), reception quality (for example, Reference Signal Received Quality (RSRQ), Signal to Interference plus Noise Ratio (SINR), Signal to Noise Ratio (SNR)).
  • Signal strength for example, Received Signal Strength Indicator (RSSI)
  • channel information for example, CSI
  • the measurement result may be output to the control unit 110.
  • the transmission path interface 140 transmits/receives signals (backhaul signaling) to/from devices included in the core network 30, other base stations 10, and the like, 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 may be configured by at least one of the transmission/reception unit 120 and the transmission/reception antenna 130.
  • the transmitting/receiving unit 120 may transmit setting information regarding a plurality of channel state information (CSI) reports respectively corresponding to a plurality of transmitting points, and may transmit at least one instruction regarding the plurality of CSI reports.
  • the transmission/reception unit 120 may transmit information regarding mapping between CSI report setting information of a plurality of transmission points.
  • CSI channel state information
  • FIG. 10 is a diagram illustrating an example of the configuration of the user terminal according to the embodiment.
  • the user terminal 20 includes a control unit 210, a transmission/reception unit 220, and a transmission/reception antenna 230. Note that each of the control unit 210, the transmission/reception unit 220, and the transmission/reception antenna 230 may be provided with one or more.
  • the functional blocks of the characteristic part in the present embodiment are mainly shown, and the user terminal 20 may be assumed to also have other functional blocks necessary for wireless communication. A part of the processing of each unit described below may be omitted.
  • the control unit 210 controls the entire user terminal 20.
  • the control unit 210 can be configured by a controller, a control circuit, and the like that are described based on 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, etc., and transfer the data to the transmission/reception unit 220.
  • the transmitter/receiver 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 may include 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 common knowledge in the technical field of the present disclosure.
  • the transmission/reception unit 220 may be configured as an integrated transmission/reception unit, or may be configured by a transmission unit and a reception unit.
  • the transmission unit may include a transmission processing unit 2211 and an RF unit 222.
  • the reception unit may include a reception processing unit 2212, an RF unit 222, and a measurement unit 223.
  • the transmission/reception antenna 230 can be configured by an antenna described based on common recognition in the technical field according to the present disclosure, for example, an array antenna or the like.
  • the transmitter/receiver 220 may receive the above-mentioned downlink channel, synchronization signal, downlink reference signal, and the like.
  • the transceiver 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), or the like.
  • digital beamforming for example, precoding
  • analog beamforming for example, phase rotation
  • the transmission/reception unit 220 processes the PDCP layer, the RLC layer (for example, RLC retransmission control), and the MAC layer (for example, for the data and control information acquired from the control unit 210). , HARQ retransmission control) or the like to generate a bit string to be transmitted.
  • the transmission/reception unit 220 (transmission processing unit 2211) performs channel coding (which may include error correction coding), modulation, mapping, filter processing, DFT processing (if necessary), and IFFT processing on the bit string to be transmitted.
  • the baseband signal may be output by performing transmission processing such as precoding and digital-analog conversion.
  • the transmission/reception unit 220 (transmission processing unit 2211) is configured to transmit the channel using a DFT-s-OFDM waveform when transform precoding is enabled for the channel (for example, PUSCH).
  • the DFT process may be performed as the transmission process, or otherwise, the DFT process may not be performed as the transmission process.
  • the transmitter/receiver 220 may perform modulation, filtering, amplification, etc. on the baseband signal in the radio frequency band, and transmit the radio frequency band signal via the transmission/reception antenna 230. ..
  • the transmission/reception unit 220 may perform amplification, filtering, demodulation to a baseband signal, etc., 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-digital conversion, FFT processing, IDFT processing (if necessary), filter processing, demapping, demodulation, decoding (error correction) on the acquired baseband signal.
  • User data and the like may be acquired by applying reception processing such as MAC layer processing, RLC layer processing, and PDCP layer processing.
  • the transmission/reception unit 220 may perform measurement on the received signal.
  • the measurement unit 223 may perform RRM measurement, CSI measurement, etc. based on the received signal.
  • the measurement unit 223 may measure received power (for example, RSRP), reception quality (for example, RSRQ, SINR, SNR), signal strength (for example, RSSI), channel 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 may be configured by 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 also transmits a plurality of channel state information (CSI) reports corresponding to a plurality of transmission points (eg, TRP) (eg, SP-CSI report on PUCCH, SP-CSI report on PUSCH, A- Receive configuration information (eg, resource settings, report settings) regarding CSI reports, etc., and receive at least one instruction (eg, activation, deactivation, trigger, MAC CE, DCI, etc.) regarding the plurality of CSI reports. You may.
  • the control unit 210 may perform the plurality of CSI reports based on the at least one instruction.
  • the transmission/reception unit 220 respectively receives the plurality of instructions (for example, a plurality of DCIs, a plurality of MAC CEs) from the plurality of transmission points, and the control unit 210, based on each of the plurality of instructions, Corresponding CSI reports may be made (Embodiment 1-1).
  • the plurality of instructions for example, a plurality of DCIs, a plurality of MAC CEs
  • the control unit 210 respectively receives the plurality of instructions (for example, a plurality of DCIs, a plurality of MAC CEs) from the plurality of transmission points, and the control unit 210, based on each of the plurality of instructions, Corresponding CSI reports may be made (Embodiment 1-1).
  • the transmission/reception unit 220 receives one instruction (for example, one DCI, one MAC CE) regarding the plurality of CSI reports from one of the plurality of transmission points, and the control unit 210 causes the one of the one The plurality of CSI reports may be performed based on the instruction (Embodiment 1-2).
  • one instruction for example, one DCI, one MAC CE
  • control unit 210 responds to the instruction of the CSI report corresponding to the first transmission point (for example, TRP#0, TRP#i) and the CSI report corresponding to the first transmission point and the second transmission point ( For example, the CSI report corresponding to TRP#1, TRP#j) may be performed (Embodiment 2-1).
  • the transmitter/receiver 220 may include a first setting of the CSI report corresponding to the first transmission point (eg, report setting, CSI report setting) and a second setting of the CSI report corresponding to the second transmission point (eg, report setting). , CSI report setting), and the control unit 210 may determine at least one of the first setting and the second setting based on the association (Embodiment 2). -2, option 1b of Embodiment 1-3-1).
  • each functional block may be realized by using one device physically or logically coupled, or directly or indirectly (for example, two or more devices physically or logically separated). , Wired, wireless, etc.) and may be implemented using these multiple devices.
  • the functional blocks may be realized by combining the one device or the plurality of devices with software.
  • the functions include judgment, determination, judgment, calculation, calculation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, solution, selection, selection, establishment, comparison, assumption, expectation, and deemed. , Broadcasting (notifying), notifying (communicating), forwarding (forwarding), configuring (reconfiguring), allocating (allocating, mapping), allocating (assigning), etc.
  • a functional block (configuration unit) that causes transmission to function may be referred to as a transmitting unit (transmitting unit), a transmitter (transmitter), or the like.
  • the implementation method is not particularly limited.
  • the base station, the user terminal, and the like may function as a computer that performs the process of the wireless communication method of the present disclosure.
  • FIG. 11 is a diagram illustrating an example of hardware configurations of a base station and a user terminal according to an 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 terms such as a device, a circuit, a device, a section, and a unit are interchangeable with each other.
  • the hardware configurations of the base station 10 and the user terminal 20 may be configured to include one or a plurality of each device illustrated in the figure, or may be configured not to include some devices.
  • processor 1001 may be implemented by one or more chips.
  • the processor 1001 For each function in the base station 10 and the user terminal 20, for example, by causing a predetermined software (program) to be loaded on hardware such as the processor 1001 and the memory 1002, the processor 1001 performs calculation and communication via the communication device 1004. Is controlled, and at least one of reading and writing of data in the memory 1002 and the storage 1003 is controlled.
  • a predetermined software program
  • the processor 1001 operates an operating system to control the entire computer, for example.
  • the processor 1001 may be configured by a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic device, a register, and the like.
  • CPU central processing unit
  • the control unit 110 (210) and the transmission/reception unit 120 (220) described above may be realized by the processor 1001.
  • the processor 1001 reads a program (program code), software module, data, and the like 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 similarly for other functional blocks.
  • the memory 1002 is a computer-readable recording medium, and for example, at least Read Only Memory (ROM), Erasable Programmable ROM (EPROM), Electrically EPROM (EEPROM), Random Access Memory (RAM), and other appropriate storage media. It may be configured by one.
  • the memory 1002 may be called a register, a cache, a main memory (main storage device), or the like.
  • the memory 1002 may store an executable program (program code), a software module, etc. for implementing the wireless communication method according to an embodiment of the present disclosure.
  • the storage 1003 is a computer-readable recording medium, for example, a flexible disk, a floppy (registered trademark) disk, a magneto-optical disk (for example, a compact disk (Compact Disc ROM (CD-ROM), etc.), a digital versatile disk, Blu-ray® disk), removable disk, hard disk drive, smart card, flash memory device (eg, card, stick, key drive), magnetic stripe, database, server, and/or any other suitable storage medium May be configured by.
  • the storage 1003 may be called an auxiliary storage device.
  • the communication device 1004 is hardware (transmission/reception device) for performing communication between computers via at least one of a wired network and a wireless network, and is also called, for example, a network device, a network controller, a network card, a communication module, or the like.
  • the communication device 1004 for example, realizes at least one of frequency division duplex (Frequency Division Duplex (FDD)) and time division duplex (Time Division Duplex (TDD)), a high frequency switch, a duplexer, a filter, a frequency synthesizer, and the like. May be included.
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • the transmission/reception unit 120 (220) and the transmission/reception antenna 130 (230) described above may be realized by the communication device 1004.
  • the transmitter/receiver 120 (220) may be physically or logically separated from the transmitter 120a (220a) and the receiver 120b (220b).
  • the input device 1005 is an input device (eg, keyboard, mouse, microphone, switch, button, sensor, etc.) that receives 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 be integrated (for example, a touch panel).
  • Each device such as the processor 1001 and the memory 1002 is connected by a bus 1007 for communicating information.
  • the bus 1007 may be configured 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 (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 part or all of each functional block may be realized by using the hardware. For example, the 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
  • channel, symbol and signal may be read as each other.
  • the signal may also 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.
  • a component carrier Component Carrier (CC)
  • CC Component Carrier
  • a radio frame may be composed of one or more periods (frames) in the time domain.
  • Each of the one or more periods (frames) forming the radio frame may be referred to as a subframe.
  • a 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 certain signal or channel.
  • the numerology includes, for example, subcarrier spacing (SubCarrier Spacing (SCS)), bandwidth, symbol length, cyclic prefix length, transmission time interval (Transmission Time Interval (TTI)), number of symbols per TTI, and radio frame configuration. , At least one of a specific filtering process performed by the transceiver in the frequency domain and a specific windowing process performed by the transceiver in the time domain.
  • a 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.).
  • OFDM Orthogonal Frequency Division Multiplexing
  • SC-FDMA Single Carrier Frequency Division Multiple Access
  • the slot may be a time unit based on numerology.
  • a slot may include multiple minislots. Each minislot may be composed of one or more symbols in the time domain. The minislot may also be called a subslot. Minislots may be configured with a smaller number of symbols than slots.
  • a PDSCH (or PUSCH) transmitted in a time unit larger than a 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.
  • Radio frame, subframe, slot, minislot, and symbol all represent the time unit for signal transmission. Radio frames, subframes, slots, minislots, and symbols may have different names corresponding to them. It should be noted that time units such as frames, subframes, slots, minislots, and symbols in the present disclosure may be interchanged with each other.
  • one subframe may be called a TTI
  • a plurality of consecutive subframes may be called a TTI
  • one slot or one minislot may be called a TTI. That is, at least one of the subframe and the 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 the TTI may be called a slot, a minislot, etc. instead of a subframe.
  • TTI means, for example, a minimum time unit of scheduling in wireless communication.
  • the base station performs scheduling to allocate radio resources (frequency bandwidth that can be used in each user terminal, transmission power, etc.) to each user terminal in units of TTI.
  • the definition of TTI is not limited to this.
  • the TTI may be a transmission time unit such as a channel-encoded data packet (transport block), a code block, a codeword, or a processing unit such as scheduling or link adaptation.
  • transport block channel-encoded data packet
  • code block code block
  • codeword codeword
  • processing unit such as scheduling or link adaptation.
  • one slot or one minislot is called a TTI
  • one or more TTIs may be the minimum time unit for scheduling.
  • the number of slots (minislot number) that constitutes the minimum time unit of the scheduling may be controlled.
  • a TTI having a time length of 1 ms may be called a normal TTI (TTI in 3GPP Rel. 8-12), a normal TTI, a long TTI, a normal subframe, a normal subframe, a long subframe, a slot, or the like.
  • a TTI shorter than the normal TTI may be called 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.
  • a long TTI (eg, normal TTI, subframe, etc.) may be read as a TTI having a time length exceeding 1 ms, and a short TTI (eg, shortening TTI, etc.) is less than the TTI length of the long TTI and is 1 ms. It may be read as a 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 included in the RB may be the same regardless of the numerology, and may be 12, for example.
  • the number of subcarriers included in the RB may be determined based on numerology.
  • the RB may include one or more symbols in the time domain and may be one slot, one minislot, one subframe, or one TTI in length.
  • One TTI, one subframe, etc. may be configured by one or a plurality of resource blocks.
  • One or more RBs are a physical resource block (Physical RB (PRB)), a subcarrier 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.
  • a resource block may be composed of one or more resource elements (Resource Element (RE)).
  • RE resource elements
  • one RE may be a radio resource area of one subcarrier and one symbol.
  • Bandwidth Part (may be called partial bandwidth etc.) represents a subset of continuous common RBs (common resource blocks) for a certain neurology in a certain carrier. Good.
  • the common RB may be specified by the index of the RB based on the common reference point of the carrier.
  • PRBs may be defined in a BWP and numbered within that BWP.
  • BWP may include UL BWP (BWP for UL) and DL BWP (BWP for DL).
  • BWP UL BWP
  • BWP for DL DL BWP
  • One or more BWPs may be configured in one carrier for the UE.
  • At least one of the configured BWPs may be active, and the UE does not have to expect to send and receive a given signal/channel outside the active BWP.
  • “cell”, “carrier”, and the like in the present disclosure may be read as “BWP”.
  • the structure of the radio frame, subframe, slot, minislot, symbol, etc. described above is merely an example.
  • the number of subframes included in a radio frame, the number of slots per subframe or radio frame, the number of minislots included in a slot, the number of symbols and RBs included in a slot or minislot, and included in RBs The number of subcarriers, the number of symbols in the TTI, the symbol length, the cyclic prefix (CP) length, and the like can be variously changed.
  • the information, parameters, etc. described in the present disclosure may be represented by using an absolute value, may be represented by using a relative value from a predetermined value, or by using other corresponding information. May be represented.
  • the radio resource may be indicated by a predetermined index.
  • data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description include voltage, current, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any of these. May be represented by a combination of
  • Information and signals may be output from the upper layer to at least one of the lower layer and the lower layer to the upper layer.
  • Information, signals, etc. may be input and 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. Information, signals, etc. that are input and output can be overwritten, updated or added. The output information, signal, etc. may be deleted. The input information, signal, etc. may be transmitted to another device.
  • notification of information is not limited to the aspect/embodiment described in the present disclosure, and may be performed using another method.
  • notification of information in the present disclosure includes physical layer signaling (for example, downlink control information (Downlink Control Information (DCI)), uplink control information (Uplink Control Information (UCI))), upper layer signaling (for example, Radio Resource Control). (RRC) signaling, broadcast information (master information block (Master Information Block (MIB)), system information block (System Information Block (SIB)), etc.), Medium Access Control (MAC) signaling), other signals or a combination thereof May be implemented 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 also be called 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 called an RRC message, and may be, for example, an RRC connection setup (RRC Connection Setup) message, an RRC connection reconfiguration message, or the like.
  • the MAC signaling may be notified using, for example, a MAC control element (MAC Control Element (CE)).
  • CE MAC Control Element
  • the notification of the predetermined information is not limited to the explicit notification, and may be implicitly (for example, by not issuing the notification of the predetermined information or another information). May be carried out).
  • the determination may be performed by a value represented by 1 bit (0 or 1), or may be performed by a boolean value represented by true or false. , May be performed by comparison of numerical values (for example, comparison with a predetermined value).
  • software, instructions, information, etc. may be sent and received via a transmission medium.
  • the software uses at least one of wired technology (coaxial cable, optical fiber cable, twisted pair, digital subscriber line (DSL), etc.) and wireless technology (infrared, microwave, etc.) , Servers, or other remote sources, these wired and/or wireless technologies are included within the definition of transmission media.
  • Network may mean a device (eg, a base station) included in the network.
  • precoding "precoding weight”
  • QCL Quality of Co-Location
  • TCI state "Transmission Configuration Indication state”
  • space "Spatial relation”
  • spatialal domain filter "transmission power”
  • phase rotation "antenna port”
  • antenna port group "layer”
  • number of layers Terms such as “rank”, “resource”, “resource set”, “resource group”, “beam”, “beam width”, “beam angle”, “antenna”, “antenna element”, and “panel” are interchangeable.
  • base station BS
  • wireless base station fixed station
  • NodeB NodeB
  • eNB eNodeB
  • gNB gNodeB
  • Access point "Transmission Point (TP)", “Reception Point (RP)”, “Transmission/Reception Point (TRP)”, “Panel”
  • Cell Cell
  • femto cell femto cell
  • pico cell femto cell
  • a base station can accommodate one or more (eg, three) 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 defined by a base station subsystem (for example, a small indoor base station (Remote Radio Head (RRH))) to provide communication services.
  • a base station subsystem for example, a small indoor base station (Remote Radio Head (RRH))
  • RRH Remote Radio Head
  • the term "cell” or “sector” refers to part or all of the coverage area of at least one of a base station and a base station subsystem providing communication services in this coverage.
  • MS Mobile Station
  • UE User Equipment
  • a mobile station is a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal. , Handset, user agent, mobile client, client or some other suitable term.
  • At least one of the base station and the mobile station may be called a transmission device, a reception device, a wireless communication device, or the like.
  • the base station and the mobile station may be a device mounted on a mobile body, the 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).
  • At least one of the base station and the mobile station also includes a device that does not necessarily move during a 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 replaced by the user terminal.
  • the communication between the base station and the user terminal is replaced with communication between a plurality of user terminals (eg, may be called Device-to-Device (D2D), Vehicle-to-Everything (V2X), etc.)
  • D2D Device-to-Device
  • V2X Vehicle-to-Everything
  • each aspect/embodiment of the present disclosure may be applied.
  • the user terminal 20 may have the function of the base station 10 described above.
  • the words such as “up” and “down” may be replaced with the words corresponding to the communication between terminals (for example, “side”).
  • the uplink channel and the downlink channel may be replaced with the side channel.
  • the user terminal in the present disclosure may be replaced by the base station.
  • the base station 10 may have the function of the user terminal 20 described above.
  • the operation supposed to be performed by the base station may be performed by its upper node in some cases.
  • various operations performed for communication with a terminal include a base station and one or more network nodes other than the base station (for example, Mobility Management Entity (MME), Serving-Gateway (S-GW), etc. are conceivable, but not limited to these) or a combination of these is clear.
  • MME Mobility Management Entity
  • S-GW Serving-Gateway
  • each aspect/embodiment described in the present disclosure may be used alone, may be used in combination, or may be switched according to execution. Further, the order of the processing procedure, sequence, flowchart, 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 this disclosure present elements of the various steps in a sample order, and are not limited to the specific order presented.
  • LTE Long Term Evolution
  • LTE-A LTE-Advanced
  • LTE-B LTE-Beyond
  • SUPER 3G IMT-Advanced
  • 4G 4th generation mobile communication system
  • 5G 5th generation mobile communication system
  • Future Radio Access FAA
  • New-Radio Access Technology RAT
  • NR New Radio
  • NX New radio access
  • FX Future generation radio access
  • GSM Global System for Mobile communications
  • CDMA2000 CDMA2000
  • Ultra Mobile Broadband UMB
  • IEEE 802.11 Wi-Fi (registered trademark)
  • IEEE 802.11 WiMAX (registered trademark)
  • IEEE 802.11 WiMAX (registered trademark)
  • IEEE 802.11 WiMAX (registered trademark)
  • Ultra-WideBand (UWB), Bluetooth (registered trademark), a system using another appropriate wireless communication method, a next-generation system extended based on these, and the like may be applied.
  • a plurality of systems may be combined and applied (for example, a combination of LTE or LTE-A and 5G).
  • the phrase “based on” does not mean “based only on,” unless expressly specified otherwise. In other words, the phrase “based on” means both "based only on” and “based at least on.”
  • references to elements using designations such as “first”, “second”, etc. as used in this disclosure does not generally limit the amount or order of those elements. These designations may be used in this disclosure as a convenient way to distinguish between two or more elements. Thus, references to first and second elements do not mean that only two elements may be employed or that the first element must precede the second element in any way.
  • determining may encompass a wide variety of actions.
  • judgment means “judging", “calculating”, “computing”, “processing”, “deriving”, “investigating”, “searching” (looking up, search, inquiry) ( For example, it may be considered to be a “decision” for a search in a table, database or another data structure), ascertaining, etc.
  • “decision (decision)” means receiving (eg, receiving information), transmitting (eg, transmitting information), input (input), output (output), access ( Accessing) (eg, accessing data in memory) and the like may be considered to be a “decision.”
  • judgment (decision) is regarded as “decision (decision)” of resolving, selecting, choosing, choosing, establishing, establishing, comparing, etc. Good. That is, “determination (decision)” may be regarded as “determination (decision)” of some operation.
  • the “maximum transmission power” described in the present disclosure may mean the maximum value of the transmission power, may mean the nominal maximum transmission power (the nominal UE maximum transmit power), or may be the rated maximum transmission power (the maximum transmission power). It may mean rated UE maximum transmit power).
  • connection refers to any direct or indirect connection or coupling between two or more elements. And may include the presence of one or more intermediate elements between two elements that are “connected” or “coupled” to each other.
  • the connections or connections between the elements may be physical, logical, or a combination thereof. For example, “connection” may be read as “access”.
  • radio frequency domain microwave Regions
  • electromagnetic energy having wavelengths in the light (both visible and invisible) region, etc. can be used to be considered “connected” or “coupled” to each other.
  • 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”.
  • the terms “remove”, “coupled” and the like may be construed similarly as “different”.

Landscapes

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

Abstract

La présente invention concerne un terminal utilisateur qui comprend : une unité de réception qui reçoit des informations de réglage qui se rapportent à une pluralité de rapports d'informations d'état de canal (CSI) qui correspondent à chacun d'une pluralité de points de transmission et reçoit au moins une instruction concernant la pluralité de rapports de CSI ; et une unité de commande qui réalise la pluralité de rapports de CSI sur la base de ladite instruction. Selon un mode de réalisation de la présente invention, il est possible de réaliser de manière appropriée des rapports de CSI pour une pluralité de points de transmission.
PCT/JP2019/001151 2019-01-16 2019-01-16 Terminal utilisateur et procédé de communication sans fil WO2020148839A1 (fr)

Priority Applications (2)

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JP2020566026A JP7343957B2 (ja) 2019-01-16 2019-01-16 端末、無線通信方法、基地局及びシステム
PCT/JP2019/001151 WO2020148839A1 (fr) 2019-01-16 2019-01-16 Terminal utilisateur et procédé de communication sans fil

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PCT/JP2019/001151 WO2020148839A1 (fr) 2019-01-16 2019-01-16 Terminal utilisateur et procédé de communication sans fil

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022067858A1 (fr) 2020-10-02 2022-04-07 Apple Inc. Rapport d'informations d'état de canal pour opération multi-trp

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
OPPO: "Enhancements on multi-TRP and multi-panel transmission", 3GPP TSG RAN WG1 #95 RL-1812807, 12 November 2018 (2018-11-12), XP051554767 *
QUALCOMM INCORPORATED: "Enhancements on Multi- TRP/Panel Transmission", 3GPP TSG RAN WG1 #94B R1- 1811277, 8 October 2018 (2018-10-08), XP051518680 *
SPREADTRUM COMMUNICATIONS: "Discussion on Multi- TRP transmission", 3GPP TSG RAN WG1 #94B R1- 1811001, 8 October 2018 (2018-10-08), XP051518405 *
VIVO: "Discussion on Enhancements on Multi- TRP/Panel Transmission", 3GPP TSG RAN WG1 #94B R1- 1810402, 8 October 2018 (2018-10-08), XP051517811 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022067858A1 (fr) 2020-10-02 2022-04-07 Apple Inc. Rapport d'informations d'état de canal pour opération multi-trp
EP4205476A4 (fr) * 2020-10-02 2023-10-25 Apple Inc. Rapport d'informations d'état de canal pour opération multi-trp

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