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WO2020065882A1 - 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
WO2020065882A1
WO2020065882A1 PCT/JP2018/036119 JP2018036119W WO2020065882A1 WO 2020065882 A1 WO2020065882 A1 WO 2020065882A1 JP 2018036119 W JP2018036119 W JP 2018036119W WO 2020065882 A1 WO2020065882 A1 WO 2020065882A1
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WIPO (PCT)
Prior art keywords
csi
report
transmission
subband
phase
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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PCT/JP2018/036119
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English (en)
Japanese (ja)
Inventor
祐輝 松村
聡 永田
ジン ワン
シン ワン
ギョウリン コウ
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NTT Docomo Inc
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NTT Docomo Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NTT Docomo Inc filed Critical NTT Docomo Inc
Priority to PCT/JP2018/036119 priority Critical patent/WO2020065882A1/fr
Priority to JP2020547764A priority patent/JP7383624B2/ja
Publication of WO2020065882A1 publication Critical patent/WO2020065882A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • 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
  • LTE Long Term Evolution
  • 5G + fifth generation mobile communication system
  • NR New Radio
  • 3GPP Rel. 15 or later A successor system to LTE (for example, 5G (5th generation mobile communication system), 5G + (plus), NR (New Radio), 3GPP Rel. 15 or later) is also being studied.
  • a user terminal In an existing LTE system (for example, LTE@Rel.8-13), a user terminal (UE: User @ Equipment) periodically and / or aperiodically transmits channel state information (CSI: Channel @ State @ Information) to a base station. ).
  • the UE transmits CSI using an uplink control channel (PUCCH: Physical Uplink Control Channel) and / or an uplink shared channel (PUSCH: Physical Uplink Shared Channel).
  • 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
  • an object of the present disclosure is to provide a user terminal and a wireless communication method that can appropriately perform a CSI report.
  • a user terminal for a subband for which a channel state information report is set, a control unit that generates one piece of channel state information of phase and amplitude, and a transmission unit that reports the channel state information. , Is characterized by having.
  • FIG. 1 is a diagram illustrating an example of the subband CSI.
  • FIG. 2 is a diagram illustrating an example of the priority report level table.
  • FIG. 3 is a diagram illustrating an example of a subband group.
  • FIG. 4 is a diagram illustrating a first example of the priority report level table.
  • FIG. 5 is a diagram illustrating a second example of the priority report level table.
  • FIG. 6 is a diagram illustrating a third example of the priority report level table.
  • FIG. 7 is a diagram illustrating a fourth example of the priority report level table.
  • FIG. 8 is a diagram illustrating an example of a schematic configuration of a wireless communication system according to an embodiment.
  • FIG. 9 is a diagram illustrating an example of a configuration of a base station according to one embodiment.
  • FIG. 10 is a diagram illustrating an example of a configuration of the user terminal according to the embodiment.
  • FIG. 11 is a diagram illustrating an example of a hardware configuration of the base station and the user terminal
  • the UE measures a channel state using a predetermined reference signal (or a resource for the reference signal).
  • the reference signal for channel state measurement may be called CSI-RS (Channel ⁇ State ⁇ Information-Reference ⁇ Signal) or the like.
  • CSI-RS Channel ⁇ State ⁇ Information-Reference ⁇ Signal
  • the UE measures the channel state using a signal other than the CSI-RS (for example, a synchronization signal / broadcast channel (SS / PBCH: Synchronization Signal / Physical Broadcast Channel) block, a synchronization signal, a demodulation reference signal, and the like). You may.
  • the CSI-RS resource may include at least one of non-zero power (NZP) CSI-RS and CSI-IM (Interference Management).
  • the SS / PBCH block is a block including a primary synchronization signal (PSS: Primary Synchronization Signal), a secondary synchronization signal (SSS: Secondary Synchronization Signal), and a PBCH, and may be called an SS block or the like.
  • the UE transmits the channel state information (CSI) at a predetermined timing based on a measurement result of a reference signal or the like to a base station (for example, a BS (Base @ Station), a transmission / reception point (TRP: Transmission / Reception @ Point), an eNB (eNodeB). ), GNB (NR NodeB) or the like).
  • a base station for example, a BS (Base @ Station), a transmission / reception point (TRP: Transmission / Reception @ Point), an eNB (eNodeB). ), GNB (NR NodeB) or the like.
  • the CSI includes a channel quality identifier (CQI: Channel Quality Indicator), a precoding matrix identifier (PMI: Precoding Matrix Indicator), a CSI-RS resource identifier (CRI: CSI-RS Resource Indicator), and an SS / PBCH block resource identifier (CRI).
  • CQI Channel Quality Indicator
  • PMI Precoding Matrix Indicator
  • CRI CSI-RS Resource Indicator
  • SSBRI SS / PBCH Block Indicator
  • layer identifier LI: Layer Indicator
  • rank RI Rank Indicator
  • L1-RSRP Layer 1 Reference Signal Received Power
  • $ CSI may have multiple parts.
  • the first part of the CSI (part 1 CSI) may include fixed payload size information (eg, RI, CQI, etc.).
  • the second part of CSI (part 2 CSI) may include a different type of information (eg, PMI, etc.) than part 1 CSI.
  • CSI feedback methods include (1) periodic CSI (P-CSI: Periodic @ CSI) reporting, (2) aperiodic CSI (A-CSI: Aperiodic @ CSI) reporting, and (3) semi-permanent (half) Continuous, semi-persistent (Semi-Persistent) CSI reports (SP-CSI: Semi-Persistent @ CSI) reports and the like are being studied.
  • P-CSI Periodic @ CSI
  • A-CSI Aperiodic @ CSI
  • SP-CSI Semi-Persistent @ CSI
  • the UE may transmit information about resources for reporting at least one CSI of P-CSI, SP-CSI and A-CSI (which may be referred to as CSI report configuration) to upper layer signaling, physical layer signaling (eg, downlink) Control information (DCI: Downlink Control Information) or a combination thereof may be used for notification.
  • CSI report configuration information about resources for reporting at least one CSI of P-CSI, SP-CSI and A-CSI (which may be referred to as CSI report configuration) to upper layer signaling, physical layer signaling (eg, downlink) Control information (DCI: Downlink Control Information) or a combination thereof may be used for notification.
  • DCI Downlink Control Information
  • the upper layer signaling may be, for example, any of RRC (Radio Resource Control) signaling, MAC (Medium Access Control) signaling, broadcast information, or a combination thereof.
  • RRC Radio Resource Control
  • MAC Medium Access Control
  • the MAC signaling may use, for example, a MAC control element (MAC CE (Control Element)), a MAC PDU (Protocol Data Unit), or the like.
  • the broadcast information includes, for example, a master information block (MIB: Master Information Block), a system information block (SIB: System Information Block), minimum system information (RMSI: Remaining Minimum System Information), and other system information (OSI: Other). System @ Information).
  • the CSI report configuration may include, for example, information on a report cycle, an offset, and the like, which may be expressed in a predetermined time unit (slot unit, subframe unit, symbol unit, and the like).
  • the CSI report configuration may include a configuration ID (CSI-ReportConfigId), and the configuration ID may specify parameters such as the type of CSI reporting method (whether SP-CSI or not) and the reporting period.
  • the CSI report configuration may include information (CSI-ResourceConfigId) indicating which reference signal (or which reference signal resource) to use to report the measured CSI.
  • the plurality of CSI types may be set according to the usage (or communication function).
  • a CSI type also referred to as type 1 (type @ I) @CSI
  • a CSI type (type 2 (type II) ⁇ ⁇ CSI)
  • type 1 type @ I
  • type II type II
  • CSI type type 2 (type II) ⁇ ⁇ CSI
  • the use application of the CSI type is not limited to this.
  • the UE and the base station may use type 1 CSI to maintain a coarse link using a single beam (coarse link). Further, the UE and the base station may use Type 2 CSI to perform a connection using multiple beams (for example, multiple layers). For example, the type 2 CSI may be configured to include information for each layer (or beam-related information such as a beam number).
  • control may be performed so that only some CSI parameters of the type 2 CSI information type (CSI parameters) are reported.
  • a CSI including a part of the information type may be referred to as a partial type 2 CSI (partial type 2 CSI).
  • the UE When the UE transmits Type 1 CSI using the uplink control channel, the UE reports, for example, RI and / or CRI (CSI-RS resource indicator), PMI, and CQI as CSI parameters.
  • the UE transmits the partial type 2 CSI using the uplink control channel, for example, the RI, the CQI, and the number of the non-zero wideband amplitude coefficient for each layer (number (of non-zero wideband amplitude coefficients per layer) , Are reported as CSI parameters.
  • the number of the non-zero wideband amplitude coefficient corresponds to the beam number whose amplitude is not scaled to zero. In this case, since it is not necessary to transmit information of a beam whose amplitude is zero (or equal to or less than a predetermined threshold value that can be regarded as equivalent to zero), the PMI is transmitted by transmitting the number of the non-zero wideband amplitude coefficient. Can be reduced.
  • Part 1 CSI may include RI, CQI, non-zero wideband amplitude coefficient number for each layer, and so on.
  • Part 2 CSI may include PMI.
  • Type 2 CSI feedback introduces a large overhead, so in type 2 CSI feedback, the higher the rank supported and the greater the number of beam combinations, the greater the overhead.
  • Type 2 CSI may include one wideband (all subbands) CSI and subband CSI for each subband.
  • the wideband CSI may include a rotation factor (rotation factor), L beam selection, a maximum value of 2L beam combining coefficients (beam combining coefficient) for each layer, a wideband amplitude for each layer, and the like.
  • the subband CSI for each subband may include subband amplitude, subband phase, and so on.
  • the UE may perform a partial subband CSI report (partial subband CSI report) for performing a CSI report on a part of a plurality of subbands in order to reduce the CSI overhead.
  • a partial subband CSI report partial subband CSI report
  • the UE may perform CSI reporting (CSI measurement) using a part of a plurality of continuous subbands.
  • the plurality of subbands may constitute a band, a component carrier (CC), a BWP (BandWidth Part, a partial band), or the like.
  • Each subband may be a predetermined number of RBs (Resource @ Block).
  • the UE selects an even-numbered subband (the subband index is an even number) among the N subbands # 0 to # N-1 (subband indexes # 0 to # N-1).
  • the CSI of # 0, # 2,..., # N-2 (part-2 subband CSI of even-numbered subbands) is reported.
  • the UE assigns a part of the part 2 CSI according to the priority in the priority report level (priority @ report @ levels) table as shown in FIG. It may be omitted.
  • N Rep is the number of CSI reports configured to be carried on PUSCH.
  • the priority reporting level table has 2N Rep +1 entries for Part 2 CSI. Of the priorities 0 to 2N Rep assigned to each part 2 CSI, priority 0 is the highest priority and priority 2N Rep is the lowest priority.
  • the 2N Rep +1 CSI includes one part 2 wideband CSI and 2N Rep part 2 subband CSI.
  • the UE When the UE is scheduled to transmit a transport block on the PUSCH on which the CSI report is multiplexed, the UE starts with the lowest priority CSI until the number of coded symbols based on the number of bits of the CSI part 2 satisfies a predetermined condition. , Part 2 CSI may be omitted.
  • the priorities are, in descending order, the part 2 wideband CSI for CSI reports 1 to N rep , the even (subband index) part 2 subband CSI for CSI report 1, and the odd part 2 subband CSI for CSI report 1 , the even-numbered Part 2 sub-band CSI for the CSI report 2, the odd-numbered Part 2 sub-band CSI for the CSI report 2, ..., the even-numbered Part 2 sub-band CSI for the CSI report N rep, odd for the CSI report N rep Part 2 subband CSI of FIG.
  • the UE can reduce the overhead of the CSI report.
  • the base station may also derive the amplitude and phase of the sub-band for which CSI is not reported by interpolating the amplitude and phase of the sub-band for which CSI has been reported.
  • the present inventors have conceived a method of reducing the granularity of overhead reduction in CSI reporting.
  • the CSI report may be read as at least one of CSI measurement and CSI report.
  • the UE may select some subbands for Type 2 CSI reporting. In other words, the UE may omit some subbands in the type 2 CSI report (does not need to perform type 2 CSI reporting for some subbands).
  • the UE may perform at least one of the following selection methods 1 to 3.
  • selection method 1> The UE selects some subbands reporting both the phase and the amplitude (full reporting).
  • ⁇ Selection method 2> The UE selects several subbands that report a phase and do not report an amplitude (phase reporting only).
  • ⁇ Selection method 3> The UE selects some subbands that report an amplitude and do not report a phase (amplitude reporting only).
  • the UE may configure subbands for at least one of full report, phase report, and amplitude report by higher layer signaling (eg, RRC signaling, or RRC signaling and MAC @ CE), or as specified in the specification.
  • higher layer signaling eg, RRC signaling, or RRC signaling and MAC @ CE
  • the determination may be made based on a predetermined rule.
  • the UE may set whether to support the phase report or the amplitude report of each subband by higher layer signaling.
  • the UE may be configured to support phase reporting or amplitude reporting for all subbands by higher layer signaling.
  • the UE may be configured to set the CSI report for the subband according to the following configuration methods 1 to 5.
  • the UE may be configured with the following three subband patterns by higher layer signaling.
  • the subband pattern may have bits of the number of subbands (bitmap). If the bit corresponding to the subband index is 1, it may indicate that the report is valid. For example, if the UE is configured with 10 subbands for Type 2 CSI reporting, the subband pattern may be 10 bits.
  • the UE determines subbands # 0, 2, 4, 6, and 8 as targets for complete report.
  • the phase report indication information is 0100000001
  • the UE determines subbands # 1 and 9 as targets of phase report.
  • the amplitude report instruction information is 0001010100
  • the UE determines subbands # 3, 5, 7, as targets for amplitude report.
  • the UE may be configured with the following two subband patterns by higher layer signaling. That is, the UE does not report the amplitude of the subband.
  • A Complete report indication information
  • B Phase report indication information
  • the UE may be configured with the following three subband patterns by higher layer signaling.
  • the UE may determine the target sub-band for the amplitude report based on the report indication information, the complete report indication information, and the phase report indication information.
  • a specific example of the setting method 3 may be one of the following setting methods 3-1 to 3-3.
  • the report instruction information may indicate whether or not each subband is to be reported.
  • the complete report indication information may indicate whether or not each subband is a target of a complete report.
  • the phase report indication information may indicate whether or not each subband is subject to phase reporting.
  • the UE determines subbands # 0, 2, 4, 6, and 8 as report targets. If the complete report instruction information is 0100000001, the UE determines subbands # 1, 9 as targets of complete report. If the phase report indication information is 00001000000, the UE determines subband # 4 as a target for phase report. The UE determines the remaining subbands # 3, 5, and 7 as the targets of the amplitude report.
  • the report instruction information may indicate whether or not each subband is to be reported.
  • the complete report indication information may indicate whether or not each subband to be reported is subject to full reporting.
  • the phase report indication information may indicate whether or not each subband to be reported is subject to phase reporting.
  • the length of the complete report indication information and the length of the phase report indication information may be the number of subbands to be reported (the number of 1s in the report indication information).
  • the UE determines subbands # 0, 2, 4, 6, and 8 as report targets.
  • the complete report instruction information is 10001
  • the UE determines the subbands # 0 and 8 as targets of complete report.
  • the phase report indication information is 00100
  • the UE determines subband # 4 as a target for phase report.
  • the UE determines the remaining subbands # 2 and # 6 as the targets of the amplitude report.
  • the setting overhead can be suppressed as compared with the setting method 3-1.
  • the report instruction information may indicate whether or not each subband is to be reported.
  • the complete report indication information may indicate whether or not each subband to be reported is subject to full reporting.
  • the phase report indication information may indicate whether or not each sub-band of the report targets other than the complete report target is a phase report target.
  • the length of the complete report indication information may be the number of subbands to be reported (the number of 1s in the report indication information).
  • the length of the phase report instruction information may be the number of subbands other than the complete report target (the number of 0 in the complete report instruction information) among the report target subbands.
  • the UE determines subbands # 0, 2, 4, 6, and 8 as report targets.
  • the complete report instruction information is 10001
  • the UE determines the subbands # 0 and 8 as targets of complete report.
  • the phase report indication information is 010
  • the UE determines subband # 4 as a target for phase report.
  • the UE determines the remaining subbands # 2 and # 6 as the targets of the amplitude report.
  • the setting overhead can be suppressed as compared with the setting method 3-2. it can.
  • the UE may be configured for one of full report, phase report, and amplitude report by higher layer signaling.
  • the UE may make a configured report for all subbands.
  • the overhead of the type 2 CSI report and the accuracy of the CSI report interpolation can be appropriately controlled by reducing the setting granularity of the CSI report.
  • the UE may support a priority reporting level table (CSI reporting priority rule) that takes into account fine granularity.
  • the priority reporting level table may be rebuilt.
  • the priority reporting level table may take into account at least one of the following parameters: ⁇ CSI reporting index n Subband group (whether the subband index is an even number or an odd number, or a group of subband indexes based on a predetermined rule) -Whether the CSI is phase or amplitude
  • the sub-band group may be a group of sub-band indices according to a predetermined rule.
  • the number of subband groups may be more than two.
  • the subband index may be divided into four subband groups (1/4 subband to 4/4 subband) by the remainder of the subband index by 4.
  • the ⁇ ⁇ subband may be a subband in which the remainder of the subband index by 4 is 0.
  • the 2/4 subband may be a subband in which the remainder of the subband index by 4 is 1.
  • the 3/4 sub-band may be a sub-band whose remainder by the sub-band index of 4 is 2.
  • the 4/4 subband may be a subband in which the remainder of the subband index by 4 is 3.
  • FIG. 4 shows an example in which the dimensions of phase and amplitude are added to the priority report level table.
  • the priority report level table includes a phase part 2 CSI report and an amplitude part 2 CSI report for subbands having an even subband index for CSI report 1.
  • FIG. 5 shows an example in which the sub-band granularity is fine.
  • the priority report level table includes, in descending order of priority, part 2 CSI reports of all 1/4 subbands for CSI report 1, part 2 CSI reports of all 2/4 subbands for CSI report 1, and all Includes Part 2 CSI report for 3/4 subband, Part 2 CSI report for all 4/4 subbands for CSI report 1.
  • FIG. 6 shows an example where the priority of the phase is higher than the priority of the amplitude for one CSI reporting index.
  • the sub-band index having an even sub-band index and the sub-band phase having an odd sub-band index have part 2 CSI reports in which the sub-band index is even.
  • the amplitude of the subband and the subband with an odd subband index are higher than the priority of the Part 2 CSI report.
  • FIG. 7 shows an example in which the order of priority of the phase and the order of priority of the amplitude are alternated in the even and odd subband indexes with respect to the CSI report index.
  • the priority report level table includes, in descending order of priority, a part 2 CSI report of the phase of a subband having an even subband index for CSI report 1, and a part 2 CSI of an amplitude of a subband having an odd subband index for CSI report 1.
  • the report includes a Part 2 CSI report of the amplitude of the subband for which the subband index is even for CSI report 1, and a Part 2 CSI report of the phase of the subband for which the subband index is odd for CSI report 1.
  • the UE may determine the CSI to be omitted from the part 2 wideband CSI and the part 2 subband CSI of some subbands set according to example 1 according to the priority report level table of example 2.
  • the overhead of the type 2 CSI report and the accuracy of the CSI report interpolation can be appropriately controlled by reducing the granularity of the priority report level table.
  • the UE may report UE capabilities for CSI overhead reduction.
  • the UE capability may indicate at least one of the following capabilities 1, 2.
  • ⁇ Capability 1> Supports UE to perform at least one of full report, phase report, and amplitude report for different subbands.
  • ⁇ Capability 2> UE supports one of full report, phase report, and amplitude report for all subbands.
  • One of capabilities 1 and 2 is specified in the specification, and the UE may report the presence or absence of the specified capability.
  • UE supports full reporting.
  • UE supports amplitude reporting.
  • UE supports phase reporting.
  • UE supports performing at least one of a full report, a phase report, and an amplitude report for different subbands.
  • the UE sets the wideband and subband amplitude or the wideband amplitude for the amplitude report by setting the true / false of the upper layer signaling (subbandAmplitude). Also, Rel. Fifteen UEs support only subbands for phase reporting.
  • the UE can appropriately perform the CSI report according to the UE capability.
  • wireless communication system Wireless communication system
  • communication is performed using any of the wireless communication methods according to the above embodiments of the present disclosure or a combination thereof.
  • FIG. 8 is a diagram illustrating an example of a schematic configuration of a wireless communication system according to an embodiment.
  • the wireless communication system 1 may be a system that realizes communication using LTE (Long Term Evolution) and 5G NR (5th generation mobile communication system New Radio) specified by 3GPP (Third Generation Partnership Project). .
  • LTE Long Term Evolution
  • 5G NR Fifth Generation mobile communication system New Radio
  • the wireless communication system 1 may support dual connectivity between a plurality of RATs (Radio Access Technology) (multi-RAT dual connectivity (MR-DC: Multi-RAT Dual Connectivity)).
  • MR-DC is based on dual connectivity (EN-DC: E-UTRA-NR @ Dual Connectivity) between LTE (Evolved Universal Terrestrial Radio Access) and NR, and dual connectivity (NE-DC with E-UTRA-NR Dual Connectivity).
  • -DC NR-E-UTRA (Dual Connectivity) may be included.
  • the base station (eNB) of LTE (E-UTRA) is a master node (MN: Master @ Node), and the base station (gNB) of NR is a secondary node (SN: Secondary @ Node).
  • MN Master @ Node
  • gNB secondary node
  • SN Secondary @ Node
  • the NR base station (gNB) is the MN
  • the LTE (E-UTRA) base station (eNB) is the SN.
  • the wireless communication system 1 has dual connectivity between a plurality of base stations in the same RAT (for example, dual connectivity in which both MN and SN are NR base stations (gNB) (NN-DC: NR-NR Dual Connectivity)). ) May be supported.
  • a plurality of base stations in the same RAT for example, dual connectivity in which both MN and SN are NR base stations (gNB) (NN-DC: NR-NR Dual Connectivity)).
  • the wireless communication system 1 includes a base station 11 forming a macro cell C1 having relatively wide coverage, and a base station 12 (12a to 12c) arranged in the macro cell C1 and forming a small cell C2 smaller than the macro cell C1. May be provided.
  • User terminal 20 may be located in at least one cell. The arrangement, number, and the like of each cell and the user terminals 20 are not limited to the modes shown in the figure.
  • the base stations 11 and 12 are not distinguished, they are collectively referred to as a base station 10.
  • the user terminal 20 may be connected to at least one of the plurality of base stations 10.
  • the user terminal 20 may use at least one of carrier aggregation (CA: Carrier @ Aggregation) using a plurality of component carriers (CC: Component @ Carrier) 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 (FR1: FrequencyFRange 1) and the second frequency band (FR2: Frequency Range 2).
  • the macro cell C1 may be included in FR1, and the small cell C2 may be included in FR2.
  • FR1 may be a frequency band of 6 GHz or less (sub-6 GHz (sub-6 GHz)), and FR2 may be 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: Time Division Duplex) and frequency division duplex (FDD: Frequency Division Duplex) in each CC.
  • TDD Time Division Duplex
  • FDD Frequency Division Duplex
  • the plurality of base stations 10 may be connected by wire (for example, an optical fiber compliant with CPRI (Common Public Radio Interface), an X2 interface, or the like) or wirelessly (for example, NR communication).
  • wire for example, an optical fiber compliant with CPRI (Common Public Radio Interface), an X2 interface, or the like
  • 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 an IAB (Integrated Access Backhaul) 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
  • the base station 10 may be connected to the core network 30 via another base station 10 or directly.
  • the core network 30 may include, for example, at least one of Evolved Packet Core (EPC), 5G Core Network (5GCN), Next Generation Core (NGC), and the like.
  • EPC Evolved Packet Core
  • 5GCN 5G Core Network
  • NGC Next Generation Core
  • the user terminal 20 may be a terminal that supports at least one of the communication systems such as LTE, LTE-A, and 5G.
  • an orthogonal frequency division multiplexing (OFDM) based wireless access scheme may be used.
  • OFDM Orthogonal frequency division multiplexing
  • CP-OFDM Cyclic Prefix OFDM
  • DFT-s-OFDM Discrete Fourier Transform Spread OFDM
  • OFDMA Orthogonal Frequency Division Divide Multiple
  • SC-FDMA Single Carrier Frequency Frequency Division Multiple Access
  • the wireless access scheme may be referred to as a waveform.
  • another wireless access method for example, another single carrier transmission method or another multi-carrier transmission method
  • a downlink shared channel (PDSCH: Physical Downlink Shared Channel), a broadcast channel (PBCH: Physical Broadcast Channel), and a downlink control channel (PDCCH: Physical Downlink Control) are shared by the user terminals 20 as downlink channels. Channel) may be used.
  • PDSCH Physical Downlink Shared Channel
  • PBCH Physical Broadcast Channel
  • PDCCH Physical Downlink Control
  • an uplink shared channel (PUSCH: Physical Uplink Shared Channel) shared by each user terminal 20, an uplink control channel (PUCCH: Physical Uplink Control Channel), a random access channel (PRACH) : Physical Random Access Channel) or the like may be used.
  • PUSCH Physical Uplink Shared Channel
  • PUCCH Physical Uplink Control Channel
  • PRACH random access channel
  • the user data, upper layer control information, SIB (System Information Block), and the like are transmitted by the PDSCH.
  • User data, higher layer control information, and the like may be transmitted by the PUSCH.
  • MIB Master Information Block
  • PBCH Physical Broadcast Channel
  • Lower layer control information may be transmitted by the PDCCH.
  • the lower layer control information may include, for example, downlink control information (DCI: Downlink Control Information) including scheduling information of at least one of the PDSCH and the PUSCH.
  • DCI Downlink Control Information
  • DCI for scheduling the PDSCH may be referred to as DL assignment, DL @ DCI, or the like
  • the DCI for scheduling the PUSCH may be referred to as UL grant, UL @ DCI, or the like.
  • PDSCH may be replaced with DL data
  • PUSCH may be replaced with UL data.
  • a control resource set (CORESET: Control REsource SET) and a search space (search space) may be used for detecting the PDCCH.
  • CORESET corresponds to a resource for searching DCI.
  • the search space corresponds to a search area and a search method of PDCCH candidates (PDCCH @ candidates).
  • One coreset may be associated with one or more search spaces.
  • the UE may monitor a RESET associated with a search space based on the search space settings.
  • One SS may correspond to a PDCCH candidate corresponding to one or a plurality of aggregation levels (aggregation Level).
  • One or more search spaces may be referred to as a search space set.
  • search space “search space”, “search space set”, “search space setting”, “search space set setting”, “CORESET”, “CORESET setting”, and the like in the present disclosure may be interchanged with each other.
  • channel state information (CSI: Channel State Information), acknowledgment information (for example, HARQ-ACK (Hybrid Automatic Repeat Repeat reQuest ACKnowledgement), ACK / NACK, etc.), scheduling request (SR: Scheduling Request) ) May be transmitted.
  • CSI Channel State Information
  • acknowledgment information for example, HARQ-ACK (Hybrid Automatic Repeat Repeat reQuest ACKnowledgement), ACK / NACK, etc.
  • scheduling request (SR: Scheduling Request)
  • a random access preamble for establishing a connection with a cell may be transmitted by the PRACH.
  • a downlink, an uplink, and the like may be expressed without a “link”.
  • various channels may be expressed without “Physical” at the beginning.
  • a synchronization signal (SS: Synchronization Signal), a downlink reference signal (DL-RS: Downlink Reference Signal), or the like may be transmitted.
  • a DL-RS a cell-specific reference signal (CRS), a channel state information reference signal (CSI-RS), and a demodulation reference signal (DMRS: DeModulation) are provided.
  • Reference Signal a position determination reference signal (PRS: Positioning Reference Signal), a phase tracking reference signal (PTRS: Phase Tracking Reference Signal), and the like may be transmitted.
  • PRS Positioning Reference Signal
  • PTRS Phase Tracking Reference Signal
  • the synchronization signal may be, for example, at least one of a primary synchronization signal (PSS: Primary Synchronization Signal) and a secondary synchronization signal (SSS: Secondary Synchronization Signal).
  • PSS Primary Synchronization Signal
  • SSS Secondary Synchronization Signal
  • a signal block including SS (PSS, SSS) and PBCH (and DMRS for PBCH) may be referred to as SS / PBCH block, SSB (SS @ Block), and the like. Note that SS, SSB, and the like may also be referred to as reference signals.
  • a measurement reference signal (SRS: Sounding Reference Signal), a demodulation reference signal (DMRS), and the like may be transmitted as an uplink reference signal (UL-RS: Uplink Reference Signal).
  • SRS Sounding Reference Signal
  • DMRS demodulation reference signal
  • UL-RS Uplink Reference Signal
  • the DMRS may be called a user terminal specific reference signal (UE-specific Reference Signal).
  • FIG. 9 is a diagram illustrating an example of a configuration of a base station according to one 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 path interface 140 may each include one or more.
  • base station 10 also has other functional blocks necessary for wireless communication. Some of the processes 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 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 path 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 generated data to the transmission / reception unit 120.
  • the control unit 110 may perform call processing (setting, release, etc.) of the communication channel, state management of the base station 10, management of radio resources, and the like.
  • the transmission / reception unit 120 may include a baseband unit 121, an RF (Radio Frequency) 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 (phase shifter), a measurement circuit, a transmission / reception circuit, and the like described 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 from a transmission unit and a reception unit.
  • the transmission 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 measurement unit 123.
  • the transmission / reception antenna 130 can be configured from 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 transmission / reception unit 120 may transmit the above-described downlink channel, synchronization signal, downlink reference signal, and the like.
  • the transmission / reception unit 120 may receive the above-described uplink channel, uplink reference signal, and the like.
  • the transmission / reception unit 120 may form at least one of the transmission beam and the 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 data, control information, and the like acquired from the control unit 110 in the PDCP (Packet Data Convergence Protocol) layer and the RLC (Radio Link Control) layer processing (for example, RLC retransmission control), MAC (Medium Access Control) layer processing (for example, HARQ retransmission control), and the like 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, filter processing, and discrete Fourier transform (DFT: Discrete Fourier Transform) processing on a bit string to be transmitted.
  • channel coding may include error correction coding
  • modulation may include error correction coding
  • mapping may include error correction coding
  • filter processing may include discrete Fourier transform (DFT: Discrete Fourier Transform) processing on a bit string to be transmitted.
  • DFT discrete Fourier transform
  • Transmission processing such as Inverse Fast Fourier Transform (IFFT) processing, precoding, and digital-analog conversion (if necessary) may be performed to output a baseband signal.
  • IFFT Inverse Fast Fourier Transform
  • precoding may be performed to output a baseband signal.
  • digital-analog conversion if necessary
  • the transmission / reception unit 120 may perform modulation, filtering, amplification, and the like on the baseband signal into a 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, and the like on the radio frequency band signal received by the transmission / reception antenna 130.
  • the transmission / reception unit 120 (reception processing unit 1212) performs analog-to-digital conversion, fast Fourier transform (FFT: Fast Fourier Transform) processing, and inverse discrete Fourier transform (IDFT) on the acquired baseband signal. Applying reception processing such as processing (if necessary), filtering, demapping, demodulation, decoding (which may include error correction decoding), MAC layer processing, RLC layer processing, and PDCP layer processing, Etc. may be obtained.
  • FFT Fast Fourier Transform
  • IDFT inverse discrete Fourier transform
  • the transmission / reception unit 120 may measure the received signal.
  • the measurement unit 123 may perform RRM (Radio Resource Management) measurement, CSI (Channel State Information) measurement, or the like based on the received signal.
  • the measuring unit 123 receives the reception power (for example, RSRP (Reference Signal Received Power)), reception quality (for example, RSRQ (Reference Signal Received Quality), SINR (Signal to Interference plus Noise Ratio, SNR (Signal to Noise Ratio)).
  • Signal strength for example, RSSI (Received Signal Strength Indicator)
  • channel 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 or another base station 10, and transmits user data (user plane data) for the user terminal 20; Data and the like may be obtained and 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, the transmission / reception antenna 130, and the transmission path interface 140.
  • the transmission / reception unit 120 may transmit the setting of the channel state information report.
  • the transmission / reception unit 120 may receive the channel state information.
  • FIG. 10 is a diagram illustrating an example of a 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 one or more of the control unit 210, the transmission / reception unit 220, and the transmission / reception antenna 230 may be provided.
  • 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 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 and measurement 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 generated 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 transmission / reception unit 220 can be configured from a transmitter / receiver, an RF circuit, a baseband circuit, a filter, a phase shifter, a measurement circuit, a transmission / reception circuit, and the like, which are described based on 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 configured from a transmission unit and a reception unit.
  • the transmission unit may include a transmission processing unit 2211 and an RF unit 222.
  • the receiving 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 from 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 transmission / reception unit 220 may receive the above-described downlink channel, synchronization signal, downlink reference signal, and the like.
  • the transmission / reception unit 220 may transmit the above-described uplink channel, uplink reference signal, and the like.
  • the transmission / reception unit 220 may form at least one of the transmission beam and the 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 (transmission processing unit 2211) performs processing of the PDCP layer, processing of the RLC layer (for example, RLC retransmission control), processing of the MAC layer (for example, for data, control information, and the like acquired from the control unit 210, for example). , HARQ retransmission control), etc., 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), IFFT processing on the bit sequence to be transmitted. , Precoding, digital-analog conversion, etc., and output a baseband signal.
  • whether to apply the DFT processing may be based on the transform precoding setting.
  • the transmission / reception unit 220 transmits the channel using the DFT-s-OFDM waveform.
  • DFT processing may be performed as the transmission processing, or otherwise, DFT processing may not be performed as the transmission processing.
  • the transmission / reception unit 220 may perform modulation, filtering, amplification, and the like on the baseband signal into a radio frequency band, and transmit a 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, and the like on the radio frequency band signal 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), filter processing, demapping, demodulation, decoding (error correction) on the obtained baseband signal. Decoding may be included), reception processing such as MAC layer processing, RLC layer processing, and PDCP layer processing may be applied to acquire user data and the like.
  • the transmission / reception unit 220 may measure the received signal.
  • the measurement unit 223 may perform RRM measurement, CSI measurement, and the like based on the received signal.
  • the measurement unit 223 may measure received power (for example, RSRP), received 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 transmitting unit and the receiving unit of the user terminal 20 may be configured by at least one of the transmitting / receiving unit 220, the transmitting / receiving antenna 230, and the transmission line interface 240.
  • the control unit 210 may generate one piece of channel state information of phase and amplitude for a subband for which a channel state information report (for example, type 2 CSI report) is set.
  • the transmission / reception unit 220 may report the channel state information.
  • control unit 210 includes instruction information (eg, an instruction to instruct to report one of a phase and an amplitude (for example, a complete report), a phase (for example, a phase report), and an amplitude (for example, an amplitude report). , Report instruction information, complete report instruction information, phase report instruction information, and amplitude report instruction information).
  • instruction information eg, an instruction to instruct to report one of a phase and an amplitude (for example, a complete report), a phase (for example, a phase report), and an amplitude (for example, an amplitude report).
  • the indication information may indicate that one of a phase and an amplitude, a phase and an amplitude is reported for each subband.
  • the indication information may indicate that one of a phase and an amplitude, a phase and an amplitude is reported for all subbands.
  • control unit 210 determines the channel state information to be reported according to a predetermined priority (for example, a priority report level table), and the priority is determined based on a plurality of subband groups (for example, subband groups).
  • a predetermined priority for example, a priority report level table
  • the sub-band channel state information may be phase or amplitude.
  • each functional block may be realized 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 block may be realized by combining 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, resolution, selection, selection, establishment, comparison, assumption, expectation, and deemed. , Broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, 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 realization method is not particularly limited.
  • a base station, a user terminal, or the like may function as a computer that performs processing of the wireless communication method according to the present disclosure.
  • FIG. 11 is a diagram illustrating an example of a hardware configuration of the base station and the user terminal according to the embodiment.
  • the above-described base station 10 and user terminal 20 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 illustrated in the drawing, or may be configured to exclude some of the devices.
  • processor 1001 may be implemented by one or more chips.
  • the functions of the base station 10 and the user terminal 20 are performed, for example, by reading predetermined software (program) on hardware such as the processor 1001 and the memory 1002 so that the processor 1001 performs an arithmetic operation and communicates via the communication device 1004. And controlling at least one of reading and writing of data in the memory 1002 and the storage 1003.
  • predetermined software program
  • the processor 1001 performs an arithmetic operation and communicates via the communication device 1004.
  • the processor 1001 controls the entire computer by operating an operating system, for example.
  • the processor 1001 may be configured by a central processing unit (CPU: Central Processing Unit) including an interface with a peripheral device, a control device, an arithmetic device, a register, and the like.
  • CPU Central Processing Unit
  • the control unit 110 (210), the transmitting / receiving unit 120 (220), and the like may be realized by the processor 1001.
  • the processor 1001 reads out a program (program code), a software module, data, and the like from at least one of the storage 1003 and the communication device 1004 to the memory 1002, and executes various processes according to these.
  • a program program code
  • a program that causes a computer to execute at least a part of the operation described in the above embodiment is used.
  • the control unit 110 (210) may be realized by a control program stored in the memory 1002 and operated by the processor 1001, and other functional blocks may be similarly realized.
  • the memory 1002 is a computer-readable recording medium, for example, at least one of ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electrically EPROM), RAM (Random Access Memory), and other appropriate storage media. It may be constituted by one.
  • the memory 1002 may be called 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, and the like that can be executed to implement the wireless communication method according to an embodiment of the present disclosure.
  • the storage 1003 is a computer-readable recording medium such as a flexible disk, a floppy (registered trademark) disk, a magneto-optical disk (for example, a compact disk (CD-ROM (Compact Disc) ROM, etc.), a digital versatile disc, At least one of a Blu-ray (registered trademark) disk, a removable disk, a hard disk drive, a smart card, a flash memory device (eg, a card, a stick, a key drive), a magnetic stripe, a database, a server, and other suitable storage media. May be configured.
  • 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 referred to as, for example, a network device, a network controller, a network card, a communication module, or the like.
  • the communication device 1004 includes a high-frequency switch, a duplexer, a filter, a frequency synthesizer, and the like, for example, in order to realize at least one of frequency division duplex (FDD: Frequency Division Duplex) and time division duplex (TDD: Time Division Duplex). May be configured.
  • 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 transmission / reception unit 120 (220) may be physically or logically separated from 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, and the like) that receives an external input.
  • the output device 1006 is an output device that performs output to the outside (for example, a display, a speaker, an LED (Light Emitting Diode) lamp, and the like). Note that the input device 1005 and the output device 1006 may have an integrated configuration (for example, a touch panel).
  • the devices such as the processor 1001 and the memory 1002 are connected by a bus 1007 for communicating information.
  • the bus 1007 may be configured using a single bus, or may be configured using a different bus for each device.
  • the base station 10 and the user terminal 20 include hardware such as a microprocessor, a digital signal processor (DSP: Digital Signal Processor), an ASIC (Application Specific Integrated Circuit), a PLD (Programmable Logic Device), and an FPGA (Field Programmable Gate Array). It may be configured to include hardware, and some or all of the functional blocks may be realized using the hardware. For example, the processor 1001 may be implemented using at least one of these pieces of hardware.
  • DSP Digital Signal Processor
  • ASIC Application Specific Integrated Circuit
  • PLD Programmable Logic Device
  • FPGA Field Programmable Gate Array
  • RS Reference Signal
  • a component carrier may be called a cell, a frequency carrier, a carrier frequency, or the like.
  • a radio frame may be configured by one or more periods (frames) in the time domain.
  • the one or more respective periods (frames) forming the radio frame may be referred to as a subframe.
  • a subframe may be configured by one or more slots in the time domain.
  • the subframe may be of a fixed length of time (eg, 1 ms) that does not depend on numerology.
  • the new melology may be a communication parameter applied to at least one of transmission and reception of a certain signal or channel.
  • Numerology includes, for example, subcarrier interval (SCS: SubCarrier @ Spacing), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI: Transmission @ Time @ Interval), number of symbols per TTI, radio frame configuration, transmission and reception.
  • SCS SubCarrier @ Spacing
  • TTI Transmission @ Time @ Interval
  • TTI Transmission @ Time @ Interval
  • radio frame configuration transmission and reception.
  • 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 may be indicated.
  • the slot may be configured by one or a plurality of symbols (OFDM (Orthogonal Frequency Division Multiplexing) symbol, SC-FDMA (Single Carrier Frequency Division Multiple Access) symbol, etc.) in the time domain. 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 constituted by one or more symbols in the time domain.
  • the mini-slot may be called a sub-slot.
  • a minislot may be made up of a smaller number of symbols than slots.
  • a PDSCH (or PUSCH) transmitted in time units larger than minislots may be referred to as PDSCH (PUSCH) mapping type A.
  • a PDSCH (or PUSCH) transmitted using a minislot may be referred to as a PDSCH (PUSCH) mapping type B.
  • Radio frames, subframes, slots, minislots, and symbols all represent time units when transmitting signals.
  • the radio frame, the subframe, the slot, the minislot, and the symbol may have different names corresponding to each. Note 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 the existing LTE, a period shorter than 1 ms (for example, 1 to 13 symbols), or a period longer than 1 ms. It may be.
  • the unit representing the TTI may be called a slot, a minislot, or the like instead of a subframe.
  • the TTI refers to, for example, a minimum time unit of scheduling in wireless communication.
  • the base station performs scheduling for allocating radio resources (frequency bandwidth, transmission power, and the like that can be used in each user terminal) to each user terminal in TTI units.
  • radio resources frequency bandwidth, transmission power, and the like that can be used in each user terminal
  • the 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 and link adaptation. Note that when a TTI is given, a time section (for example, the number of symbols) in which a transport block, a code block, a codeword, and the like are actually mapped may be shorter than the TTI.
  • one slot or one minislot is called a TTI
  • one or more TTIs may be the minimum time unit for scheduling. Further, the number of slots (mini-slot number) 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, and 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 (for example, a normal TTI, a subframe, etc.) may be read as a TTI having a time length exceeding 1 ms, and a short TTI (for example, a shortened TTI, etc.) may be replaced with a TTI shorter than the long TTI and 1 ms.
  • the TTI having the above-mentioned TTI length may be read.
  • 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 (subcarriers) in the frequency domain.
  • the number of subcarriers included in the RB may be the same irrespective of the numerology, and may be, for example, 12.
  • 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 have a length of one slot, one minislot, one subframe, or one TTI.
  • One TTI, one subframe, and the like may each be configured by one or a plurality of resource blocks.
  • one or more RBs include a physical resource block (PRB: Physical @ RB), a subcarrier group (SCG: Sub-Carrier @ Group), a resource element group (REG: Resource @ Element @ Group), a PRB pair, an RB pair, and the like. May be called.
  • PRB Physical @ RB
  • SCG Sub-Carrier @ Group
  • REG Resource @ Element @ Group
  • PRB pair an RB pair, and the like. May be called.
  • a resource block may be composed of one or more resource elements (RE: Resource @ Element).
  • RE Resource @ Element
  • one RE may be a radio resource area of one subcarrier and one symbol.
  • a bandwidth part (which may be referred to as a partial bandwidth or the like) may also represent a subset of consecutive common RBs (common @ resource @ blocks) for a certain numerology in a certain carrier. Good.
  • the common RB may be specified by an index of the RB based on the common reference point of the carrier.
  • a PRB may be defined by a BWP and numbered within the BWP.
  • $ BWP may include a BWP for UL (UL @ BWP) and a BWP for DL (DL @ BWP).
  • BWP for a UE, one or more BWPs may be configured in one carrier.
  • At least one of the configured BWPs may be active, and the UE does not have to assume to transmit and receive a given signal / channel outside the active BWP.
  • “cell”, “carrier”, and the like in the present disclosure may be replaced with “BWP”.
  • the structures of the above-described radio frame, subframe, slot, minislot, symbol, and the like are merely examples.
  • the number of subframes included in a radio frame, the number of slots per subframe or radio frame, the number of minislots included in a slot, the number of symbols and RBs included in a slot or minislot, included in an RB The configuration of the number of subcarriers, the number of symbols in the TTI, the symbol length, the cyclic prefix (CP: Cyclic @ Prefix) length, and the like can be variously changed.
  • the information, parameters, and the like described in the present disclosure may be expressed using an absolute value, may be expressed using a relative value from a predetermined value, or may be expressed using another corresponding information. May be represented.
  • a radio resource may be indicated by a predetermined index.
  • Names used for parameters and the like in the present disclosure are not limited in any respect. Further, the formulas and the like using these parameters may be different from those explicitly disclosed in the present disclosure.
  • the various channels (PUCCH (Physical Uplink Control Channel), PDCCH (Physical Downlink Control Channel), etc.) and information elements can be identified by any suitable name, so the various names assigned to these various channels and information elements Is not a limiting name in any way.
  • the information, signals, etc. described in this disclosure may be represented using any of a variety of different technologies.
  • data, instructions, commands, information, signals, bits, symbols, chips, etc. that can be referred to throughout the above description are not limited to voltages, currents, electromagnetic waves, magnetic or magnetic particles, optical or photons, or any of these. May be represented by a combination of
  • information, signals, and the like can 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 / output via a plurality of network nodes.
  • Information and signals input and output may be stored in a specific place (for example, a memory) or may be managed using a management table. Information and signals that are input and output can be overwritten, updated, or added. The output information, signal, and the like may be deleted. The input information, signal, and the like may be transmitted to another device.
  • information notification in the present disclosure includes physical layer signaling (for example, downlink control information (DCI: Downlink Control Information), uplink control information (UCI: Uplink Control Information)), and upper layer signaling (for example, RRC (Radio Resource Control). ) Signaling, broadcast information (master information block (MIB: Master Information Block), system information block (SIB: System Information Block), etc.), MAC (Medium Access Control) signaling), other signals or a combination thereof. Is also good.
  • 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 called L1 / L2 (Layer 1 / Layer 2) control information (L1 / L2 control signal), L1 control information (L1 control signal), or the like.
  • the RRC signaling may be referred to as an RRC message, and may be, for example, an RRC connection setup (RRC Connection Setup) message, an RRC connection reconfiguration (RRC Connection Reconfiguration) message, or the like.
  • the MAC signaling may be notified using, for example, a MAC control element (MAC @ CE (Control @ Element)).
  • the notification of the predetermined information is not limited to an explicit notification, and is implicit (for example, by not performing the notification of the predetermined information or by another information). May be performed).
  • the determination may be made by a value represented by 1 bit (0 or 1), or may be made by a boolean value represented by true or false. , May be performed by comparing numerical values (for example, comparison with a predetermined value).
  • software, instructions, information, and the like may be transmitted and received via a transmission medium.
  • a transmission medium For example, if the 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.), the website, When transmitted from a server or other remote source, at least one of these wired and / or wireless technologies is included within the definition of a transmission medium.
  • Network may mean a device (eg, a base station) included in the network.
  • precoding In the present disclosure, “precoding”, “precoder”, “weight (precoding weight)”, “quasi-co-location (QCL)”, “TCI state (Transmission Configuration Indication state)”, “spatial relation” (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 interchangeable Can be used for
  • base station (BS: Base @ Station)”, “wireless base station”, “fixed station (fixed @ station)”, “NodeB”, “eNodeB (eNB)”, “gNodeB (gNB)”, “gNodeB (gNB)” "Access point (access @ point)”, “transmission point (TP: Transmission @ Point)”, “reception point (RP: Reception @ Point)”, “transmission / reception point (TRP: Transmission / Reception @ Point)”, “panel”, “cell” , “Sector”, “cell group”, “carrier”, “component carrier” and the like may be used interchangeably.
  • a base station may also be referred to as a macro cell, a small cell, a femto cell, a pico cell, or the like.
  • a base station can accommodate one or more (eg, three) cells. If the base station accommodates multiple cells, the entire coverage area of the base station can be partitioned into multiple smaller areas, each smaller area being a base station subsystem (eg, a small indoor base station (RRH: Communication services can also be provided by Remote Radio Head)).
  • a base station subsystem eg, a small indoor base station (RRH: Communication services can also be provided by Remote Radio Head).
  • RRH small indoor base station
  • 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 that provides communication services in this coverage.
  • MS mobile station
  • UE user equipment
  • terminal terminal
  • a mobile station is a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal. , Handset, user agent, mobile client, client or some other suitable terminology.
  • At least one of 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 unit, the mobile unit itself, or the like.
  • the moving object may be a vehicle (for example, a car, an airplane, or the like), may be an unmanned moving object (for example, a drone, an autonomous vehicle), or may be a robot (maned or unmanned). ).
  • at least one of the base station and the mobile station 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 IoT (Internet of Things) device such as a sensor.
  • IoT Internet of Things
  • the base station in the present disclosure may be replaced with a user terminal.
  • communication between a base station and a user terminal is replaced with communication between a plurality of user terminals (for example, may be called D2D (Device-to-Device), V2X (Vehicle-to-Everything), etc.).
  • D2D Device-to-Device
  • V2X Vehicle-to-Everything
  • Each aspect / embodiment of the present disclosure may be applied to the configuration.
  • the configuration may be such that the user terminal 20 has the function of the base station 10 described above.
  • words such as “up” and “down” may be read as words corresponding to communication between terminals (for example, “side”).
  • an uplink channel, a downlink channel, and the like may be replaced with a side channel.
  • a user terminal in the present disclosure may be replaced by a base station.
  • a configuration in which the base station 10 has the function of the user terminal 20 described above may be adopted.
  • the operation performed by the base station may be performed by an upper node (upper node) in some cases.
  • various operations performed for communication with a terminal include a base station, one or more network nodes other than the base station (eg, Obviously, it can be performed by MME (Mobility Management Entity), S-GW (Serving-Gateway) or the like, but not limited thereto, or a combination thereof.
  • 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 used by switching with execution.
  • the processing procedure, sequence, flowchart, and the like of each aspect / embodiment described in the present disclosure may be interchanged in order as long as there is no contradiction.
  • elements of various steps are presented in an exemplary order, and are not limited to the specific order presented.
  • LTE Long Term Evolution
  • LTE-A Long Term Evolution
  • LTE-B Long Term Evolution-Beyond
  • SUPER 3G IMT-Advanced
  • 4G 4th generation mobile communication
  • system 5G (5th generation mobile communication system)
  • FRA Fluture Radio Access
  • New-RAT Radio Access Technology
  • NR New Radio
  • NX New radio access
  • FX Fluture generation radio access
  • GSM Registered trademark
  • CDMA2000 Code Division Multiple Access
  • UMB Ultra Mobile Broadband
  • IEEE 802.11 Wi-Fi (registered trademark)
  • IEEE 802.16 WiMAX (registered trademark)
  • UWB Ultra-WideBand
  • Bluetooth registered trademark
  • a system using other appropriate wireless communication methods and a next-generation system extended based on these methods.
  • a plurality of systems may be combined (for example, a combination of LTE or LTE-A and 5G) and applied.
  • any reference to elements using designations such as "first,” “second,” etc., as used in this disclosure, does not generally limit the quantity or order of those elements. These designations may be used in the present disclosure as a convenient way to distinguish between two or more elements. Thus, reference to a first and second element does not mean that only two elements can be employed or that the first element must precede the second element in any way.
  • determining means judging, calculating, computing, processing, deriving, investigating, searching (upping, searching, inquiry) ( For example, a search in a table, database, or another data structure), ascertaining, etc., may be regarded as "deciding".
  • determining includes receiving (eg, receiving information), transmitting (eg, transmitting information), input (input), output (output), and access ( accessing) (e.g., accessing data in a memory) or the like.
  • judgment (decision) is regarded as “judgment (decision)” of resolving, selecting, selecting, establishing, comparing, etc. Is also good. That is, “judgment (decision)” may be regarded as “judgment (decision)” of any operation.
  • “judgment (decision)” may be read as “assuming”, “expecting”, “considering”, or the like.
  • 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 refer to the rated maximum transmission power (the 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 “connected” or “coupled” to each other.
  • the coupling 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, microwave It can be considered to be “connected” or “coupled” to each other using electromagnetic energy having a wavelength in the region, light (both visible and invisible) regions, and the like.
  • the term “A and B are different” may mean that “A and B are different from each other”.
  • the term may mean that “A and B are different from C”.
  • Terms such as “separate”, “coupled” and the like may be interpreted similarly to "different”.

Landscapes

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

Abstract

L'invention concerne un terminal utilisateur comprenant : une unité de commande qui génère un élément d'informations d'état de canal concernant la phase et l'amplitude pour une sous-bande ayant un ensemble de rapport d'informations d'état de canal associé ; et une unité de transmission qui rapporte les informations d'état de canal. La présente invention peut permettre d'obtenir un rapport de CSI approprié.
PCT/JP2018/036119 2018-09-27 2018-09-27 Terminal utilisateur et procédé de communication sans fil Ceased WO2020065882A1 (fr)

Priority Applications (2)

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PCT/JP2018/036119 WO2020065882A1 (fr) 2018-09-27 2018-09-27 Terminal utilisateur et procédé de communication sans fil
JP2020547764A JP7383624B2 (ja) 2018-09-27 2018-09-27 端末及び無線通信方法

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PCT/JP2018/036119 WO2020065882A1 (fr) 2018-09-27 2018-09-27 Terminal utilisateur et procédé de communication sans fil

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115699854A (zh) * 2020-04-10 2023-02-03 株式会社Ntt都科摩 终端、无线通信方法以及基站
JPWO2023012996A1 (fr) * 2021-08-05 2023-02-09
WO2023135821A1 (fr) * 2022-01-17 2023-07-20 株式会社Ｎｔｔドコモ Terminal, procédé de communication radio et station de base
WO2023206566A1 (fr) * 2022-04-29 2023-11-02 北京小米移动软件有限公司 Procédé et appareil de transmission d'informations, dispositif, et support de stockage

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130294393A1 (en) * 2011-01-24 2013-11-07 Lg Electronics Inc. Method for reporting channel state information in wireless communication system and apparatus therefor
US20150146641A1 (en) * 2012-07-12 2015-05-28 Lg Electronics Inc. Method for feeding back channel state information in wireless communication system and apparatus for same
WO2018097600A1 (fr) * 2016-11-23 2018-05-31 Samsung Electronics Co., Ltd. Procédé et appareil permettant un rapport de csi à résolution multiple dans des systèmes de communication sans fil avancés

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8385452B2 (en) 2008-10-24 2013-02-26 Qualcomm Incorporated Method and apparatus for separable channel state feedback in a wireless communication system
KR101411342B1 (ko) 2010-01-13 2014-06-25 알까뗄 루슨트 다중 셀들에서의 다중―입력 다중―출력（ｍｉｍｏ） 채널들 정보 피드백에 대한 방법 및 장비
JP5911320B2 (ja) 2012-02-02 2016-04-27 株式会社Ｎｔｔドコモ 無線通信システム、ユーザ端末、無線基地局装置及び無線通信方法

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130294393A1 (en) * 2011-01-24 2013-11-07 Lg Electronics Inc. Method for reporting channel state information in wireless communication system and apparatus therefor
US20150146641A1 (en) * 2012-07-12 2015-05-28 Lg Electronics Inc. Method for feeding back channel state information in wireless communication system and apparatus for same
WO2018097600A1 (fr) * 2016-11-23 2018-05-31 Samsung Electronics Co., Ltd. Procédé et appareil permettant un rapport de csi à résolution multiple dans des systèmes de communication sans fil avancés

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
NOKIA ET AL.: "Remaining details on CSI reporting for Type II and Type I codebook", 3GPP TSG RAN WG1 #90B RL-1718510, 13 October 2017 (2017-10-13), pages 1 - 8, XP051341692 *
NOKIA ET AL.: "Remaining Issues on CSI Acquisition", 3GPP TSG-RAN WG1 MEETING #94 RL-1809236, 24 August 2018 (2018-08-24), pages 1 - 2, XP051516603 *
NTT DOCOMO: "Feedback Design for CSI Type II", 3GPP TSG RAN WG1 #90 R1-1713916, 25 August 2017 (2017-08-25), pages 1 - 7, XP051316708 *
NTT DOCOMO: "Type II CSI feedback enhancement", 3GPP TSG RAN WG1 MEETING #94BIS R1-1811347, 12 October 2018 (2018-10-12), pages 1 - 4, XP051518750 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115699854A (zh) * 2020-04-10 2023-02-03 株式会社Ntt都科摩 终端、无线通信方法以及基站
JPWO2023012996A1 (fr) * 2021-08-05 2023-02-09
WO2023012996A1 (fr) * 2021-08-05 2023-02-09 株式会社Ｎｔｔドコモ Terminal, procédé de communication sans fil et station de base
JP7781887B2 (ja) 2021-08-05 2025-12-08 株式会社Ｎｔｔドコモ 端末、無線通信方法、基地局及びシステム
WO2023135821A1 (fr) * 2022-01-17 2023-07-20 株式会社Ｎｔｔドコモ Terminal, procédé de communication radio et station de base
WO2023206566A1 (fr) * 2022-04-29 2023-11-02 北京小米移动软件有限公司 Procédé et appareil de transmission d'informations, dispositif, et support de stockage

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