WO2019220644A1 - 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
WO2019220644A1
WO2019220644A1 PCT/JP2018/019402 JP2018019402W WO2019220644A1 WO 2019220644 A1 WO2019220644 A1 WO 2019220644A1 JP 2018019402 W JP2018019402 W JP 2018019402W WO 2019220644 A1 WO2019220644 A1 WO 2019220644A1
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Prior art keywords
transmission
ncb
ptrs
signal
unit
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PCT/JP2018/019402
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English (en)
Japanese (ja)
Inventor
祐輝 松村
良介 大澤
聡 永田
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株式会社Ｎｔｔドコモ
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Priority to PCT/JP2018/019402 priority Critical patent/WO2019220644A1/fr
Publication of WO2019220644A1 publication Critical patent/WO2019220644A1/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
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/30—TPC using constraints in the total amount of available transmission power
    • H04W52/32—TPC of broadcast or control channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

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
  • Non-patent Document 1 LTE Advanced, LTE Rel. 10, 11, 12, 13
  • LTE Rel. 8, 9 LTE Advanced, LTE Rel. 10, 11, 12, 13
  • LTE successor systems for example, FRA (Future Radio Access), 5G (5th generation mobile communication system), 5G + (plus), NR (New Radio), NX (New radio access), FX (Future generation radio access), LTE Also referred to as Rel.
  • the UE transmits a phase tracking reference signal (PTRS).
  • PTRS phase tracking reference signal
  • the UE supports at least one of a codebook (CB) based transmission and a non-codebook (NCB) based transmission.
  • CB codebook
  • NCB non-codebook
  • an object of the present disclosure is to provide a user terminal and a wireless communication method that can appropriately determine the PTRS transmission power of NCB transmission.
  • a user terminal includes a transmitter that performs non-codebook (NCB) -based transmission, and a phase tracking reference signal (PTRS: NCRS-based transmission) based on a specific precoder type. And a control unit that determines transmission power of Phase Tracking Reference Signal).
  • NCB non-codebook
  • PTRS phase tracking reference signal
  • FIG. 1 is a diagram illustrating an example of a table indicating a relationship between an upper layer parameter (ptrs-Power) related to PTRS power and ⁇ PUSCH PTRS .
  • FIG. 2 is a diagram illustrating an example of a schematic configuration of a wireless communication system according to an embodiment.
  • FIG. 3 is a diagram illustrating an example of the overall configuration of a radio base station according to an embodiment.
  • FIG. 4 is a diagram illustrating an example of a functional configuration of a radio base station according to an embodiment.
  • FIG. 5 is a diagram illustrating an example of an overall configuration of a user terminal according to an embodiment.
  • FIG. 6 is a diagram illustrating an example of a functional configuration of a user terminal according to an embodiment.
  • FIG. 7 is a diagram illustrating an example of a hardware configuration of a radio base station and a user terminal according to an embodiment.
  • the UE transmits a phase tracking reference signal (PTRS).
  • PTRS phase tracking reference signal
  • the UE may transmit the PTRS by mapping the PTRS continuously or discontinuously in the time direction in one subcarrier, for example.
  • the UE may transmit PTRS in a period (slot, symbol, etc.) for transmitting PUSCH.
  • the PTRS transmitted by the UE may be referred to as UL PTRS.
  • UL PTRS is simply referred to as PTRS.
  • Whether the UE transmits PTRS may be set by the base station using higher layer signaling.
  • the upper layer signaling may be, for example, RRC (Radio Resource Control) signaling, MAC (Medium Access Control) signaling, broadcast information, or a combination thereof.
  • RRC Radio Resource Control
  • MAC Medium Access Control
  • 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).
  • MIB Master Information Block
  • SIB System Information Block
  • RMSI Remaining Minimum System Information
  • OSI Other system information
  • the UE supports at least one of codebook (CB) based transmission and non-codebook (NCB) based transmission.
  • CB codebook
  • NCB non-codebook
  • the UE uses at least a reference signal for measurement (SRS: Sounding Reference Signal) resource index (SRI: SRS Resource Index) to determine a precoder for transmitting at least one of CB base and NCB base PUSCH.
  • SRS Sounding Reference Signal
  • SRI SRS Resource Index
  • the UE determines a precoder for PUSCH transmission based on SRI, transmission rank indicator (TRI: Transmitted Rank Indicator), and transmission precoding matrix indicator (TPMI: Transmitted Precoding Matrix Indicator). May be.
  • the UE may determine a precoder for PUSCH transmission based on SRI.
  • Precoding applied to CB base transmission may be referred to as CB base precoding.
  • Precoding applied to NCB based transmission may be referred to as NCB based precoding.
  • CB base transmission and NCB base transmission may be referred to as CB transmission and NCB transmission, respectively.
  • the UE amplifies the transmission power of the PTRS (power boosting).
  • the transmission power of PTRS may be determined based on any of the following (1) to (4) or a combination thereof: (1) Precoder type, (2) Whether the UE is a high power UE (high power UE), (3) Number of PTRS ports, (4) Number of PUSCH ports.
  • the precoder type may be set by higher layer signaling from the base station based on UE capability information reported from the UE (UE capability information).
  • the UE capability information may be precoder type information (which may be represented by a parameter “pusch-TransCoherence”) used by the UE in PUSCH transmission.
  • the UE Based on the precoder type information (which may be represented by the parameter “codebookSubset”) included in the PUSCH configuration information (PUSCH-Config information element of RRC signaling) notified by higher layer signaling, the UE performs PUSCH (and A precoder used for (PTRS) transmission may be determined.
  • the precoder type information which may be represented by the parameter “codebookSubset” included in the PUSCH configuration information (PUSCH-Config information element of RRC signaling) notified by higher layer signaling.
  • the precoder type may be full coherent, fully coherent, partial coherent, non-coherent, or a combination of at least two of these (for example, “full and partial and non-coherent”). (May be represented by parameters such as “fullyAndPartialAndNonCoherent”, “partial and non-coherent”).
  • Complete coherent may mean that the antenna port used for transmission is synchronized (it can be expressed that the phase can be matched, the precoder to be applied is the same, etc.).
  • Partially coherent may mean that some of the antenna ports used for transmission are synchronized but not synchronized.
  • Non-coherent may mean that the antenna port used for transmission cannot be synchronized.
  • the UE When the UE performs UL transmission using only the antenna port corresponding to one panel, it may be assumed that the UE is completely coherent. If the UE performs UL transmission using antenna ports corresponding to a plurality of panels and there are a plurality of antenna ports corresponding to at least one panel, it may be assumed that the UE is partially coherent. If the UE performs UL transmission using antenna ports corresponding to a plurality of panels and there is one antenna port corresponding to each panel, it may be assumed that the UE is non-coherent.
  • a UE that supports a fully coherent precoder type may be assumed to support partial and non-coherent precoder types.
  • a UE that supports partially coherent precoder types may be assumed to support non-coherent precoder types.
  • the precoder type may be read as coherency, PUSCH transmission coherence, coherence type, codebook type, codebook subset, codebook subset type, or the like.
  • Whether the UE is a high-power UE may be notified to the base station by UE capability information.
  • the UE may be set by higher layer signaling or the like indicating that the UE may operate with the high power UE.
  • the UE can acquire at least one of the number of PTRS ports and the number of PUSCH ports based on downlink control information (DCI: Downlink Control Information) for scheduling PUSCH.
  • DCI Downlink Control Information
  • DCI that schedules PUSCH may be called UL DCI, UL grant, DCI format 0_0, DCI format 0_1, or the like.
  • the transmission power of PTRS may be derived based on the power ratio ⁇ PUSCH PTRS between PUSCH and PTRS.
  • the power ratio may be expressed as a power ratio between PUSCH and PTRS per layer and per resource element, or may be expressed as a power ratio between PUSCH and PTRS per port.
  • the power amplification factor (PTRS scaling factor ⁇ PTRS ) may be determined based on ⁇ PUSCH PTRS [dB].
  • ⁇ PTRS may be calculated by 10 ⁇ PUSCH PTRS / 20.
  • the UE may map and transmit a signal obtained by multiplying the PTRS sequence by the ⁇ PTRS to the PTRS resource element.
  • the UE may scale (or limit) the transmission power of the signal based on whether or not it is a high power UE.
  • ⁇ PUSCH PTRS may be determined based on higher layer parameters (ptrs-Power) for PTRS power.
  • the UE may be notified of UL PTRS configuration information (PTRS-UplinkConfig information element of RRC signaling) including the higher layer parameter in higher layer signaling.
  • FIG. 1 is a diagram illustrating an example of a table indicating a relationship between an upper layer parameter (ptrs-Power) related to PTRS power and ⁇ PUSCH PTRS .
  • ptrs-Power an upper layer parameter related to PTRS power
  • ⁇ PUSCH PTRS a parameter related to PTRS power
  • four values ('00', '01', '10', '11') are shown as ptrs-Power. Absent.
  • ⁇ PUSCH PTRS is determined based on ptrs-Power, precoder type, PTRS port number (Q p ), and PUSCH layer number n PUSCH layer .
  • the present inventors have conceived a method for determining the PTRS transmission power for NCB transmission.
  • the UE determines the PTRS transmission power for NCB transmission based on a specific fixed precoder type.
  • the UE may assume that the precoder type is a specific type in NCB transmission, and determine the PTRS transmission power by referring to the type in the table of FIG.
  • the precoder type actually used in NCB transmission may be different from the precoder type used for determining the PTRS transmission power.
  • the specific type envisaged may be either fully coherent, partially coherent, non-coherent, or a combination of at least two of these.
  • the specific type may be partial and non-coherent. If UE capability information to report available precoder types for NCB transmission is not specified, it is unknown whether the UE supports full coherence (at least in gNB). By determining the PTRS transmission power for NCB transmission assuming that the UE is partial and non-coherent, recognition deviation (mismatch) of PTRS power amplification between the UE and the gNB can be suppressed, and throughput can be improved.
  • the specific type may be completely coherent.
  • a UE that supports NCB transmission is considered to have higher performance than a UE that supports only CB transmission (for example, the precoder type that supports it is more flexible (many precoder types are supported)).
  • the PTRS transmission power for NCB transmission assuming that the UE is completely coherent, the transmission power can be used efficiently and the throughput can be improved.
  • the specific type assumed may be determined in advance according to the specification, or may be notified from the base station to the UE using at least one of higher layer signaling and physical layer signaling.
  • the PTRS transmission power for NCB transmission can be appropriately determined.
  • the second embodiment is broadly divided into the following two regarding the PTRS transmission power of NCB transmission when the UE supports both CB transmission and NCB transmission (embodiments 2.1 and 2.2).
  • the UE assumes that the precoder type in NCB transmission is at least one of the precoder types supported by the UE in CB transmission, and determines the PTRS transmission power with reference to the type in the table of FIG. Good.
  • the UE supports the precoder type to be supported (may be referred to as “precoder type supported in one or both of CB transmission and NCB transmission”). Is transmitted to the base station. At least one of the UE and the gNB may determine a precoder type assumed by the UE in determining the PTRS transmission power for NCB transmission based on the UE capability information reported by the UE.
  • the UE capability of the precoder type reported by the UE may correspond to the precoder type applied to CB transmission. That is, the UE may use a precoder type UE capability for CB transmission in determining PTRS transmission power for NCB transmission. Alternatively, the UE capability of the precoder type reported by the UE may correspond to a precoder type applied to both CB transmission and NCB transmission.
  • the UE reports the ability to support fully coherent UL transmission (which may be read as PUSCH transmission, CB transmission, etc.), assume that the precoder type is fully coherent in the table of FIG. Based on this assumption, the transmission power of PTRS in NCB transmission may be determined.
  • the UE When the UE reports the ability to support partially coherent UL transmission, the UE assumes that the precoder type is partially coherent in the table of FIG. 1 and determines the transmission power of PTRS in NCB transmission based on the assumption. May be.
  • the UE assumes that the precoder type is non-coherent in the table of FIG.
  • the transmission power of PTRS may be determined.
  • the precoder type information notified by the higher layer signaling may be CB precoder type information (may be represented by the parameter “codebookSubset”) or NCB precoder. It may be type information.
  • the PTRS transmission power for NCB transmission can be appropriately determined.
  • the third embodiment is broadly divided into the following two regarding the PTRS transmission power of NCB transmission when the UE does not support CB transmission but supports NCB transmission (embodiments 3.1 and 3.2). ).
  • the PTRS transmission power of NCB transmission may be determined according to the first embodiment.
  • a UE that supports both CB transmission and NCB transmission may determine the PTRS transmission power of NCB transmission according to the second embodiment.
  • a UE that supports both CB transmission and NCB transmission may determine the PTRS transmission power of NCB transmission using the CB transmission precoder type.
  • a UE that supports only NCB transmission may determine a PTRS transmission power for NCB transmission using a specific precoder type and using the assumed type.
  • the UE may transmit the supported precoder type to the base station using the UE capability information. At least one of the UE and the gNB may determine a precoder type assumed by the UE in determining the PTRS transmission power for NCB transmission based on the UE capability information reported by the UE.
  • the UE capability of the precoder type reported by the UE may correspond to a precoder type for CB transmission. That is, the precoder type UE capability for CB transmission may be read and used as the precoder type UE capability for NCB transmission.
  • the PTRS transmission power for NCB transmission can be determined appropriately.
  • a UE that supports both CB transmission and NCB transmission may be configured with a higher layer parameter (ptrs-Power) for one PTRS power, and uses that parameter to determine PTRS transmission power for both CB transmission and NCB transmission. May be.
  • ptrs-Power a higher layer parameter for one PTRS power
  • a UE that supports both CB transmission and NCB transmission may be configured with higher layer parameters (ptrs-Power) for multiple (eg, two) PTRS powers, with the first parameter being the PTRS transmission power for CB transmission.
  • the second parameter may be used for determining the PTRS transmission power for NCB transmission.
  • a UE that does not support CB transmission and supports NCB transmission may be configured with a higher layer parameter (ptrs-Power) related to one PTRS power, and may use this parameter for determining the PTRS transmission power of NCB transmission.
  • the parameter may be a parameter for CB transmission or a parameter for NCB transmission.
  • the parameter for CB transmission may be read and used as the parameter for NCB transmission.
  • the UE may be assumed to be notified of a specific value (for example, '00' (low power)) when an upper layer parameter related to PTRS power is not set in NCB transmission.
  • a specific value for example, '00' (low power)
  • the PTRS transmission power may be determined with reference to different tables for CB transmission and NCB transmission.
  • a plurality of SRS resources may be set in the UE.
  • the UE may be configured with an SRS resource set for a predetermined number (one or more) of SRS resources.
  • One SRS resource may be configured to include one or a plurality of SRS ports.
  • the SRS resource includes the position of the SRS resource (eg, time and / or frequency resource position, resource offset, resource period, number of SRS symbols, SRS bandwidth, comb, sequence ID, etc.), the number of SRS ports, the SRS port number, and the SRS.
  • the resource number (which may be referred to as an SRS resource setting ID (SRS-ResourceConfigId) or the like) may be specified based on at least one piece of information.
  • the information regarding the SRS resource set and / or the SRS resource may be configured in the UE using higher layer signaling.
  • the precoder type of the UE may be determined (may be expressed as assumption, identification, estimation, etc.). In this case, the network can assume the precoder type of the UE (the precoder type supported by the UE) even if the UE does not notify the precoder type capability information (such as “pusch-TransCoherence”). .
  • the network may assume that the UE's precoder type is fully coherent if the UE transmits all four SRS resources simultaneously, and if the UE transmits only one SRS resource, the UE The precoder type may be assumed to be non-coherent, otherwise the precoder type of the UE may be assumed to be partially coherent.
  • the precoder type estimated by the network may be assumed to be at least one precoder type for CB transmission and NCB transmission.
  • timing and duration are read as “at the same timing”, “at the same timing”, “at the same time”, “within a certain period”, etc. Also good.
  • timing”, “period”, etc. may be at least one of one or more symbols, slots, subframes, and the like.
  • wireless communication system Wireless communication system
  • communication is performed using any one or a combination of the wireless communication methods according to the above embodiments.
  • FIG. 2 is a diagram illustrating an example of a schematic configuration of a wireless communication system according to an embodiment.
  • carrier aggregation (CA) and / or dual connectivity (DC) in which a plurality of basic frequency blocks (component carriers) each having a system bandwidth (for example, 20 MHz) of the LTE system as one unit are applied. can do.
  • DC dual connectivity
  • the wireless communication system 1 includes 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), NR (New Radio), FRA (Future Radio Access), New-RAT (Radio Access Technology), etc., or a system that realizes these.
  • the radio communication system 1 includes a radio base station 11 that forms a macro cell C1 having a relatively wide coverage, and a radio base station 12 (12a-12c) that is arranged in the macro cell C1 and forms a small cell C2 that is narrower than the macro cell C1. It is equipped with. Moreover, the user terminal 20 is arrange
  • the user terminal 20 can be connected to both the radio base station 11 and the radio base station 12. It is assumed that the user terminal 20 uses the macro cell C1 and the small cell C2 at the same time using CA or DC. Moreover, the user terminal 20 may apply CA or DC using a plurality of cells (CC) (for example, 5 or less CCs, 6 or more CCs).
  • CC cells
  • Communication between the user terminal 20 and the radio base station 11 can be performed using a carrier having a relatively low frequency band (for example, 2 GHz) and a narrow bandwidth (also referred to as an existing carrier or a legacy carrier).
  • a carrier having a relatively high frequency band for example, 3.5 GHz, 5 GHz, etc.
  • the same carrier may be used.
  • the configuration of the frequency band used by each radio base station is not limited to this.
  • the user terminal 20 can perform communication using time division duplex (TDD) and / or frequency division duplex (FDD) in each cell.
  • TDD time division duplex
  • FDD frequency division duplex
  • a single neurology may be applied, or a plurality of different neurology may be applied.
  • the wireless base station 11 and the wireless base station 12 are connected by wire (for example, optical fiber compliant with CPRI (Common Public Radio Interface), X2 interface, etc.) or wirelessly. May be.
  • the radio base station 11 and each radio base station 12 are connected to the higher station apparatus 30 and connected to the core network 40 via the higher station apparatus 30.
  • the upper station device 30 includes, for example, an access gateway device, a radio network controller (RNC), a mobility management entity (MME), and the like, but is not limited thereto.
  • RNC radio network controller
  • MME mobility management entity
  • Each radio base station 12 may be connected to the higher station apparatus 30 via the radio base station 11.
  • the radio base station 11 is a radio base station having a relatively wide coverage, and may be called a macro base station, an aggregation node, an eNB (eNodeB), a transmission / reception point, or the like.
  • the radio base station 12 is a radio base station having local coverage, and includes a small base station, a micro base station, a pico base station, a femto base station, a HeNB (Home eNodeB), an RRH (Remote Radio Head), and transmission / reception. It may be called a point.
  • the radio base stations 11 and 12 are not distinguished, they are collectively referred to as a radio base station 10.
  • Each user terminal 20 is a terminal that supports various communication schemes such as LTE and LTE-A, and may include not only a mobile communication terminal (mobile station) but also a fixed communication terminal (fixed station).
  • orthogonal frequency division multiple access (OFDMA) is applied to the downlink, and single carrier-frequency division multiple access (SC-FDMA) is used for the uplink.
  • SC-FDMA single carrier-frequency division multiple access
  • Frequency Division Multiple Access and / or OFDMA is applied.
  • OFDMA is a multi-carrier transmission scheme that performs communication by dividing a frequency band into a plurality of narrow frequency bands (subcarriers) and mapping data to each subcarrier.
  • SC-FDMA is a single carrier transmission in which the system bandwidth is divided into bands each composed of one or continuous resource blocks for each terminal, and a plurality of terminals use different bands to reduce interference between terminals. It is a method.
  • the uplink and downlink radio access schemes are not limited to these combinations, and other radio access schemes may be used.
  • downlink channels include a downlink shared channel (PDSCH) shared by each user terminal 20, a broadcast channel (PBCH: Physical Broadcast Channel), a downlink L1 / L2 control channel, and the like. Used. User data, higher layer control information, SIB (System Information Block), etc. are transmitted by PDSCH. Moreover, MIB (Master Information Block) is transmitted by PBCH.
  • PDSCH downlink shared channel
  • PBCH Physical Broadcast Channel
  • SIB System Information Block
  • MIB Master Information Block
  • Downlink L1 / L2 control channels include PDCCH (Physical Downlink Control Channel), EPDCCH (Enhanced Physical Downlink Control Channel), PCFICH (Physical Control Format Indicator Channel), PHICH (Physical Hybrid-ARQ Indicator Channel), and the like.
  • Downlink control information (DCI: Downlink Control Information) including PDSCH and / or PUSCH scheduling information is transmitted by the PDCCH.
  • scheduling information may be notified by DCI.
  • DCI for scheduling DL data reception may be referred to as DL assignment
  • DCI for scheduling UL data transmission may be referred to as UL grant.
  • the number of OFDM symbols used for PDCCH is transmitted by PCFICH.
  • the PHICH transmits HARQ (Hybrid Automatic Repeat reQuest) delivery confirmation information (for example, retransmission control information, HARQ-ACK, ACK / NACK, etc.) to the PUSCH.
  • HARQ Hybrid Automatic Repeat reQuest
  • EPDCCH is frequency-division multiplexed with PDSCH (downlink shared data channel), and is used for transmission of DCI and the like in the same manner as PDCCH.
  • an uplink shared channel (PUSCH) shared by each user terminal 20
  • an uplink control channel (PUCCH: Physical Uplink Control Channel)
  • a random access channel (PRACH: Physical Random Access Channel)
  • User data, higher layer control information, etc. are transmitted by PUSCH.
  • downlink radio quality information CQI: Channel Quality Indicator
  • delivery confirmation information SR
  • scheduling request etc.
  • a random access preamble for establishing connection with the cell is transmitted by the PRACH.
  • a cell-specific reference signal CRS
  • CSI-RS channel state information reference signal
  • DMRS demodulation reference signal
  • PRS Positioning Reference Signal
  • a measurement reference signal SRS: Sounding Reference Signal
  • a demodulation reference signal DMRS
  • the DMRS may be referred to as a user terminal specific reference signal (UE-specific Reference Signal). Further, the transmitted reference signal is not limited to these.
  • FIG. 3 is a diagram illustrating an example of the overall configuration of a radio base station according to an embodiment.
  • the radio base station 10 includes a plurality of transmission / reception antennas 101, an amplifier unit 102, a transmission / reception unit 103, a baseband signal processing unit 104, a call processing unit 105, and a transmission path interface 106.
  • the transmission / reception antenna 101, the amplifier unit 102, and the transmission / reception unit 103 may be configured to include one or more.
  • User data transmitted from the radio base station 10 to the user terminal 20 via the downlink is input from the higher station apparatus 30 to the baseband signal processing unit 104 via the transmission path interface 106.
  • PDCP Packet Data Convergence Protocol
  • RLC Radio Link Control
  • MAC Medium Access
  • Retransmission control for example, HARQ transmission processing
  • scheduling transmission format selection, channel coding, Inverse Fast Fourier Transform (IFFT) processing, precoding processing, and other transmission processing
  • IFFT Inverse Fast Fourier Transform
  • precoding processing precoding processing, and other transmission processing
  • the downlink control signal is also subjected to transmission processing such as channel coding and inverse fast Fourier transform, and is transferred to the transmission / reception unit 103.
  • the transmission / reception unit 103 converts the baseband signal output by precoding for each antenna from the baseband signal processing unit 104 to a radio frequency band and transmits the converted signal.
  • the radio frequency signal frequency-converted by the transmission / reception unit 103 is amplified by the amplifier unit 102 and transmitted from the transmission / reception antenna 101.
  • the transmission / reception unit 103 can be configured by a transmitter / receiver, a transmission / reception circuit, or a transmission / reception device, which is described based on common recognition in the technical field according to the present invention.
  • the transmission / reception part 103 may be comprised as an integral transmission / reception part, and may be comprised from a transmission part and a receiving part.
  • the radio frequency signal received by the transmission / reception antenna 101 is amplified by the amplifier unit 102.
  • the transmission / reception unit 103 receives the uplink signal amplified by the amplifier unit 102.
  • the transmission / reception unit 103 converts the frequency of the received signal into a baseband signal and outputs it to the baseband signal processing unit 104.
  • the baseband signal processing unit 104 performs fast Fourier transform (FFT) processing, inverse discrete Fourier transform (IDFT: Inverse Discrete Fourier Transform) processing, and error correction on user data included in the input upstream signal.
  • FFT fast Fourier transform
  • IDFT inverse discrete Fourier transform
  • Decoding, MAC retransmission control reception processing, RLC layer and PDCP layer reception processing are performed and transferred to the upper station apparatus 30 via the transmission path interface 106.
  • the call processor 105 performs communication channel call processing (setting, release, etc.), status management of the radio base station 10, radio resource management, and the like.
  • the transmission path interface 106 transmits and receives signals to and from the higher station apparatus 30 via a predetermined interface.
  • the transmission path interface 106 transmits / receives signals (backhaul signaling) to / from other radio base stations 10 via an interface between base stations (for example, an optical fiber compliant with CPRI (Common Public Radio Interface), X2 interface). May be.
  • CPRI Common Public Radio Interface
  • X2 interface May be.
  • FIG. 4 is a diagram illustrating an example of a functional configuration of the radio base station according to the embodiment.
  • the functional block of the characteristic part in this embodiment is mainly shown, and it may be assumed that the wireless base station 10 also has other functional blocks necessary for wireless communication.
  • the baseband signal processing unit 104 includes at least a control unit (scheduler) 301, a transmission signal generation unit 302, a mapping unit 303, a reception signal processing unit 304, and a measurement unit 305. Note that these configurations may be included in the radio base station 10, and some or all of the configurations may not be included in the baseband signal processing unit 104.
  • the control unit (scheduler) 301 controls the entire radio base station 10.
  • the control part 301 can be comprised from the controller, the control circuit, or control apparatus demonstrated based on the common recognition in the technical field which concerns on this invention.
  • the control unit 301 controls, for example, signal generation in the transmission signal generation unit 302, signal allocation in the mapping unit 303, and the like.
  • the control unit 301 also controls signal reception processing in the reception signal processing unit 304, signal measurement in the measurement unit 305, and the like.
  • the control unit 301 schedules system information, downlink data signals (for example, signals transmitted by PDSCH), downlink control signals (for example, signals transmitted by PDCCH and / or EPDCCH, delivery confirmation information, etc.) (for example, resource Control).
  • the control unit 301 controls generation of a downlink control signal, a downlink data signal, and the like based on a result of determining whether or not retransmission control is necessary for the uplink data signal.
  • the control unit 301 controls scheduling of synchronization signals (for example, PSS (Primary Synchronization Signal) / SSS (Secondary Synchronization Signal)), downlink reference signals (for example, CRS, CSI-RS, DMRS) and the like.
  • control unit 301 includes an uplink data signal (for example, a signal transmitted on PUSCH), an uplink control signal (for example, a signal transmitted on PUCCH and / or PUSCH, delivery confirmation information, etc.), a random access preamble (for example, Scheduling of the uplink reference signal and the like.
  • uplink data signal for example, a signal transmitted on PUSCH
  • uplink control signal for example, a signal transmitted on PUCCH and / or PUSCH, delivery confirmation information, etc.
  • a random access preamble for example, Scheduling of the uplink reference signal and the like.
  • the transmission signal generation unit 302 generates a downlink signal (downlink control signal, downlink data signal, downlink reference signal, etc.) based on an instruction from the control unit 301, and outputs it to the mapping unit 303.
  • the transmission signal generation unit 302 can be configured by a signal generator, a signal generation circuit, or a signal generation device described based on common recognition in the technical field according to the present invention.
  • the transmission signal generation unit 302 generates, for example, a DL assignment for notifying downlink data allocation information and / or a UL grant for notifying uplink data allocation information based on an instruction from the control unit 301.
  • the DL assignment and UL grant are both DCI and follow the DCI format.
  • the downlink data signal is subjected to coding processing and modulation processing according to a coding rate, a modulation scheme, and the like determined based on channel state information (CSI: Channel State Information) from each user terminal 20.
  • CSI Channel State Information
  • the mapping unit 303 maps the downlink signal generated by the transmission signal generation unit 302 to a predetermined radio resource based on an instruction from the control unit 301, and outputs it to the transmission / reception unit 103.
  • the mapping unit 303 can be configured by a mapper, a mapping circuit, or a mapping device described based on common recognition in the technical field according to the present invention.
  • the reception signal processing unit 304 performs reception processing (for example, demapping, demodulation, decoding, etc.) on the reception signal input from the transmission / reception unit 103.
  • the received signal is, for example, an uplink signal (uplink control signal, uplink data signal, uplink reference signal, etc.) transmitted from the user terminal 20.
  • the reception signal processing unit 304 can be configured by a signal processor, a signal processing circuit, or a signal processing device described based on common recognition in the technical field according to the present invention.
  • the reception signal processing unit 304 outputs the information decoded by the reception processing to the control unit 301. For example, when receiving PUCCH including HARQ-ACK, HARQ-ACK is output to control section 301.
  • the reception signal processing unit 304 outputs the reception signal and / or the signal after reception processing to the measurement unit 305.
  • the measurement unit 305 performs measurement on the received signal.
  • the measurement part 305 can be comprised from the measuring device, measurement circuit, or measurement apparatus demonstrated based on common recognition in the technical field which concerns on this invention.
  • the measurement unit 305 may perform RRM (Radio Resource Management) measurement, CSI (Channel State Information) measurement, and the like based on the received signal.
  • the measurement unit 305 includes received power (for example, RSRP (Reference Signal Received Power)), received 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)
  • propagation path information for example, CSI
  • the measurement result may be output to the control unit 301.
  • the transmission / reception unit 103 may receive PUSCH, PTRS, and the like transmitted based on non-codebook (NCB).
  • NCB non-codebook
  • the control unit 401 also includes information for the user terminal 20 to determine the transmission power of a phase tracking reference signal (PTRS) in the NCB-based transmission based on a specific precoder type (for example, The higher layer parameter (ptrs-Power) regarding PTRS power may be transmitted to the user terminal 20.
  • PTRS phase tracking reference signal
  • ptrs-Power The higher layer parameter regarding PTRS power may be transmitted to the user terminal 20.
  • FIG. 5 is a diagram illustrating an example of an overall configuration of a user terminal according to an embodiment.
  • the user terminal 20 includes a plurality of transmission / reception antennas 201, an amplifier unit 202, a transmission / reception unit 203, a baseband signal processing unit 204, and an application unit 205.
  • the transmission / reception antenna 201, the amplifier unit 202, and the transmission / reception unit 203 may be configured to include one or more.
  • the radio frequency signal received by the transmission / reception antenna 201 is amplified by the amplifier unit 202.
  • the transmission / reception unit 203 receives the downlink signal amplified by the amplifier unit 202.
  • the transmission / reception unit 203 converts the frequency of the received signal into a baseband signal and outputs it to the baseband signal processing unit 204.
  • the transmission / reception unit 203 can be configured by a transmitter / receiver, a transmission / reception circuit, or a transmission / reception device described based on common recognition in the technical field according to the present invention.
  • the transmission / reception unit 203 may be configured as an integral transmission / reception unit, or may be configured from a transmission unit and a reception unit.
  • the baseband signal processing unit 204 performs FFT processing, error correction decoding, retransmission control reception processing, and the like on the input baseband signal.
  • the downlink user data is transferred to the application unit 205.
  • the application unit 205 performs processing related to layers higher than the physical layer and the MAC layer. Also, broadcast information of downlink data may be transferred to the application unit 205.
  • uplink user data is input from the application unit 205 to the baseband signal processing unit 204.
  • the baseband signal processing unit 204 performs transmission / reception units for retransmission control (for example, HARQ transmission processing), channel coding, precoding, discrete Fourier transform (DFT) processing, IFFT processing, and the like.
  • the transmission / reception unit 203 converts the baseband signal output from the baseband signal processing unit 204 into a radio frequency band and transmits it.
  • the radio frequency signal frequency-converted by the transmission / reception unit 203 is amplified by the amplifier unit 202 and transmitted from the transmission / reception antenna 201.
  • FIG. 6 is a diagram illustrating an example of a functional configuration of a user terminal according to an embodiment.
  • the functional block of the characteristic part in this embodiment is mainly shown, and it may be assumed that the user terminal 20 also has other functional blocks necessary for wireless communication.
  • the baseband signal processing unit 204 included in the user terminal 20 includes at least a control unit 401, a transmission signal generation unit 402, a mapping unit 403, a reception signal processing unit 404, and a measurement unit 405. Note that these configurations may be included in the user terminal 20, and some or all of the configurations may not be included in the baseband signal processing unit 204.
  • the control unit 401 controls the entire user terminal 20.
  • the control unit 401 can be composed of a controller, a control circuit, or a control device described based on common recognition in the technical field according to the present invention.
  • the control unit 401 controls, for example, signal generation in the transmission signal generation unit 402, signal allocation in the mapping unit 403, and the like.
  • the control unit 401 also controls signal reception processing in the reception signal processing unit 404, signal measurement in the measurement unit 405, and the like.
  • the control unit 401 acquires the downlink control signal and the downlink data signal transmitted from the radio base station 10 from the reception signal processing unit 404.
  • the control unit 401 controls the generation of the uplink control signal and / or the uplink data signal based on the result of determining the necessity of retransmission control for the downlink control signal and / or the downlink data signal.
  • the transmission signal generation unit 402 generates an uplink signal (uplink control signal, uplink data signal, uplink reference signal, etc.) based on an instruction from the control unit 401 and outputs the uplink signal to the mapping unit 403.
  • the transmission signal generation unit 402 can be configured by a signal generator, a signal generation circuit, or a signal generation device described based on common recognition in the technical field according to the present invention.
  • the transmission signal generation unit 402 generates an uplink control signal related to delivery confirmation information, channel state information (CSI), and the like based on an instruction from the control unit 401, for example. In addition, the transmission signal generation unit 402 generates an uplink data signal based on an instruction from the control unit 401. For example, the transmission signal generation unit 402 is instructed by the control unit 401 to generate an uplink data signal when the UL grant is included in the downlink control signal notified from the radio base station 10.
  • CSI channel state information
  • the mapping unit 403 maps the uplink signal generated by the transmission signal generation unit 402 to a radio resource based on an instruction from the control unit 401, and outputs the radio signal to the transmission / reception unit 203.
  • the mapping unit 403 can be configured by a mapper, a mapping circuit, or a mapping device described based on common recognition in the technical field according to the present invention.
  • the reception signal processing unit 404 performs reception processing (for example, demapping, demodulation, decoding, etc.) on the reception signal input from the transmission / reception unit 203.
  • the received signal is, for example, a downlink signal (downlink control signal, downlink data signal, downlink reference signal, etc.) transmitted from the radio base station 10.
  • the reception signal processing unit 404 can be configured by a signal processor, a signal processing circuit, or a signal processing device described based on common recognition in the technical field according to the present invention. Further, the reception signal processing unit 404 can constitute a reception unit according to the present invention.
  • the reception signal processing unit 404 outputs the information decoded by the reception processing to the control unit 401.
  • the reception signal processing unit 404 outputs, for example, broadcast information, system information, RRC signaling, DCI, and the like to the control unit 401.
  • the reception signal processing unit 404 outputs the reception signal and / or the signal after reception processing to the measurement unit 405.
  • the measurement unit 405 performs measurement on the received signal.
  • the measurement part 405 can be comprised from the measuring device, measurement circuit, or measurement apparatus demonstrated based on common recognition in the technical field which concerns on this invention.
  • the measurement unit 405 may perform RRM measurement, CSI measurement, and the like based on the received signal.
  • the measurement unit 405 may measure reception power (for example, RSRP), reception quality (for example, RSRQ, SINR, SNR), signal strength (for example, RSSI), propagation path information (for example, CSI), and the like.
  • the measurement result may be output to the control unit 401.
  • the transmission / reception unit 203 performs non-codebook (NCB) based transmission.
  • NCB non-codebook
  • control unit 401 may determine the transmission power of a phase tracking reference signal (PTRS) in the NCB-based transmission based on a specific precoder type.
  • the control unit 401 may change the method for determining the transmission power of the PTRS in the NCB-based transmission based on whether or not both codebook (CB) -based transmission and NCB-based transmission are supported.
  • CB codebook
  • control unit 401 When the control unit 401 supports both CB-based transmission and NCB-based transmission, the control unit 401 assumes that the specific precoder type is at least one of the precoder types reported to be supported in the CB-based transmission. Also good.
  • the specific precoder type is at least one of the CB-based transmission-oriented precoder types notified by higher layer signaling. You may assume.
  • control unit 401 may assume that the specific precoder type is a fixed precoder type.
  • the transmission / reception unit 203 may report the precoder type supported in the CB-based transmission even when the CB-based transmission is supported without supporting the CB-based transmission.
  • the control unit 401 does not support CB-based transmission but supports NCB-based transmission, the control unit 401 is at least one of the precoder types reported to support the specific precoder type in the CB-based transmission. It may be assumed.
  • each functional block is realized using one device physically or logically coupled, or two or more devices physically or logically separated may be directly or indirectly (for example, (Using wired, wireless, etc.) and may be implemented using these multiple devices.
  • a wireless base station, a user terminal, and the like may function as a computer that performs processing of the wireless communication method of the present disclosure.
  • FIG. 7 is a diagram illustrating an example of a hardware configuration of a radio base station and a user terminal according to an embodiment.
  • the wireless 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. Good.
  • the term “apparatus” can be read as a circuit, a device, a unit, or the like.
  • the hardware configurations of the radio 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.
  • Each function in the radio base station 10 and the user terminal 20 is calculated by causing the processor 1001 to perform calculations by reading predetermined software (programs) on hardware such as the processor 1001 and the memory 1002, for example, via the communication device 1004. This is realized by controlling communication or controlling at least one of reading and writing of data in the memory 1002 and the storage 1003.
  • 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) including an interface with peripheral devices, a control device, an arithmetic device, a register, and the like.
  • CPU central processing unit
  • the baseband signal processing unit 104 (204) and the call processing unit 105 described above may be realized by the processor 1001.
  • the processor 1001 reads 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
  • the control unit 401 of the user terminal 20 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 such as a ROM (Read Only Memory), an EPROM (Erasable Programmable ROM), an EEPROM (Electrically EPROM), a RAM (Random Access Memory), or any other suitable storage medium. 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 can store a program (program code), a software module, and the like that can be executed to perform 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)), 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, or other suitable storage medium It may be constituted by.
  • the storage 1003 may be referred to as 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 a network device, a network controller, a network card, a communication module, or the like.
  • the communication device 1004 includes, for example, a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc. in order to realize at least one of frequency division duplex (FDD) and time division duplex (TDD). It may be constituted by.
  • FDD frequency division duplex
  • TDD time division duplex
  • the transmission / reception antenna 101 (201), the amplifier unit 102 (202), the transmission / reception unit 103 (203), the transmission path interface 106, and the like described above may be realized by the communication device 1004.
  • the input device 1005 is an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that accepts an input from the outside.
  • the output device 1006 is an output device (for example, a display, a speaker, an LED (Light Emitting Diode) lamp, etc.) that performs output to the outside.
  • 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 radio base station 10 and the user terminal 20 include a microprocessor, a digital signal processor (DSP), an ASIC (Application Specific Integrated Circuit), a PLD (Programmable Logic Device), an FPGA (Field Programmable Gate Array), and the like. It may be configured including hardware, and a part or all of each functional block may be realized 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
  • the terms described in the present disclosure and the terms necessary for understanding the present disclosure may be replaced with terms having the same or similar meaning.
  • the signal may be a message.
  • the reference signal may be abbreviated as RS (Reference Signal), and may be referred to as a pilot, a pilot signal, or the like depending on an applied standard.
  • a component carrier CC: Component Carrier
  • CC Component Carrier
  • the radio frame may be configured by one or a plurality of periods (frames) in the time domain.
  • Each of the one or more periods (frames) constituting the radio frame may be referred to as a subframe.
  • 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 the neurology.
  • 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 the 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 configured with one or more symbols in the time domain.
  • the minislot may also be called a subslot.
  • a mini-slot may be composed of fewer symbols than slots.
  • PDSCH and PUSCH transmitted in units of time larger than the minislot may be referred to as PDSCH / PUSCH mapping type A.
  • the PDSCH and PUSCH transmitted using the minislot may be referred to as PDSCH / PUSCH mapping type B.
  • Radio frame, subframe, slot, minislot, and symbol all represent time units when transmitting signals. Different names may be used for the radio frame, subframe, slot, minislot, and symbol.
  • one subframe may be called a transmission time interval (TTI)
  • TTI transmission time interval
  • a plurality of consecutive subframes may be called a TTI
  • TTI slot or one minislot
  • a unit representing TTI may be called a slot, a minislot, or the like instead of a subframe.
  • TTI means, for example, a minimum time unit for scheduling in wireless communication.
  • a radio base station performs scheduling for assigning radio resources (frequency bandwidth, transmission power, etc. that can be used in each user terminal) 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, or a code word, or may be a processing unit such as scheduling or link adaptation.
  • a time interval for example, the number of symbols
  • a transport block, a code block, a code word, etc. may be shorter than the TTI.
  • one or more TTIs may be the minimum scheduling unit. Further, the number of slots (the number of mini-slots) constituting the minimum time unit of the scheduling may be controlled.
  • a TTI having a time length of 1 ms may be called a normal TTI (TTI in LTE Rel. 8-12), a normal TTI, a long TTI, a normal subframe, a normal subframe, or a long subframe.
  • a TTI shorter than a 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, or a subslot.
  • 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, shortened TTI) is less than the TTI length of the long TTI and 1 ms. It may be replaced with 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 (subcarriers) in the frequency domain. Further, the RB may include one or a plurality of symbols in the time domain, and may have a length of 1 slot, 1 mini slot, 1 subframe, or 1 TTI. One TTI and one subframe may each be composed of one or a plurality of resource blocks.
  • One or more RBs include physical resource blocks (PRB), sub-carrier groups (SCG), resource element groups (REG), PRB pairs, RB pairs, etc. May be called.
  • the resource block may be configured by one or a plurality of resource elements (RE: Resource Element).
  • RE Resource Element
  • 1RE may be a radio resource region of 1 subcarrier and 1 symbol.
  • the structure of the above-described radio frame, subframe, slot, minislot, symbol, etc. 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 the slot, the number of symbols and RBs included in the slot or minislot, and the RB 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.
  • information, parameters, and the like described in the present disclosure may be expressed using absolute values, may be expressed using relative values from predetermined values, or may be expressed using other corresponding information. May be represented.
  • the radio resource may be indicated by a predetermined index.
  • the names used for parameters and the like in this disclosure are not limited names in any way.
  • various channels PUCCH (Physical Uplink Control Channel), PDCCH (Physical Downlink Control Channel), etc.
  • information elements can be identified by any suitable name, so the various channels and information elements assigned to them.
  • the name is not limited in any way.
  • the information, signals, etc. described in this disclosure may be represented using any of a variety of different technologies.
  • data, commands, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description are voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any of these 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, and the like may be input / output via a plurality of network nodes.
  • the input / output information, signals, etc. may be stored in a specific location (for example, a memory) or may be managed using a management table. Input / output information, signals, and the like can be overwritten, updated, or added. The output information, signals, etc. may be deleted. Input information, signals, and the like may be transmitted to other devices.
  • information notification includes physical layer signaling (eg, downlink control information (DCI), uplink control information (UCI)), upper layer signaling (eg, RRC (Radio Resource Control) signaling), It may be implemented by broadcast information (Master Information Block (MIB), System Information Block (SIB), etc.), MAC (Medium Access Control) signaling), other signals, or a combination thereof.
  • DCI downlink control information
  • UCI uplink control information
  • RRC Radio Resource Control
  • MIB Master Information Block
  • SIB System Information Block
  • MAC Medium Access Control
  • the physical layer signaling may be referred to as 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 (RRCConnectionSetup) message, an RRC connection reconfiguration (RRCConnectionReconfiguration) message, or the like.
  • the MAC signaling may be notified using, for example, a MAC control element (MAC CE (Control Element)).
  • notification of predetermined information is not limited to explicit notification, but implicitly (for example, by not performing notification of the predetermined information or other information) May be performed).
  • 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.
  • the comparison may be performed by numerical comparison (for example, comparison with a predetermined value).
  • software, instructions, information, etc. may be transmitted / received via a transmission medium.
  • the software uses websites using at least one of wired technology (coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), etc.) and wireless technology (infrared, microwave, etc.) When transmitted from a server or other remote source, at least one of these wired and wireless technologies is included within the definition of a transmission medium.
  • system and “network” as used in this disclosure may be used interchangeably.
  • base station BS
  • radio base station fixed station
  • NodeB NodeB
  • eNodeB eNodeB
  • gNodeB gNodeB
  • BWP Bandwidth Part
  • a base station may also be called terms such as a macro cell, a small cell, a femto cell, and a pico cell.
  • the base station can accommodate one or a plurality of (for example, three) cells (also called sectors). 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, an indoor small base station (RRH: Remote Radio Head)) can also provide communication services.
  • a base station subsystem eg, an indoor small base station (RRH: Remote Radio Head)
  • RRH Remote Radio Head
  • the terms “cell” or “sector” refer 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
  • Mobile station 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 referred to as a transmission device, a reception device, or the like.
  • the base station and the mobile station may be a device mounted on the mobile body, the mobile body itself, or the like.
  • the moving body may be a vehicle (for example, a car, an airplane, etc.), an unattended moving body (for example, a drone, an autonomous driving vehicle, etc.), or a robot (manned 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.
  • the radio base station in the present disclosure may be replaced with a user terminal.
  • the communication between the radio base station and the user terminal is replaced with communication between a plurality of user terminals (for example, D2D (Device-to-Device), V2X (Vehicle-to-Everything), etc. may be called))
  • a plurality of user terminals for example, D2D (Device-to-Device), V2X (Vehicle-to-Everything), etc. may be called)
  • the user terminal 20 may have a function that the wireless base station 10 has.
  • words such as “up” and “down” may be read as words corresponding to communication between terminals (for example, “side”).
  • the uplink channel may be read as a side channel.
  • the user terminal in the present disclosure may be replaced with a radio base station.
  • the wireless base station 10 may have a function that the user terminal 20 has.
  • the operation performed by the base station may be performed by the upper node in some cases.
  • various operations performed for communication with a terminal may include a base station and one or more network nodes other than the base station (for example, It is obvious that this can be done by MME (Mobility Management Entity), S-GW (Serving-Gateway), etc., 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 switched according to execution.
  • the order of the processing procedures, sequences, flowcharts, and the like of each aspect / embodiment described in the present disclosure may be changed as long as there is no contradiction.
  • the methods described in this disclosure present elements of the various steps in an exemplary order and are not limited to the specific order presented.
  • Each aspect / embodiment described in the present disclosure includes 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), FRA (Future Radio Access), New-RAT (Radio Access Technology), NR (New Radio), NX (New radio access), FX (Future generation radio access), GSM (Registered trademark) (Global System for Mobile communications), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.
  • the present invention may be applied to a system using other appropriate wireless communication methods, a next-generation system extended based on these, and the like.
  • 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.
  • the phrase “based on” means both “based only on” and “based at least on.”
  • any reference 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 can be used in this disclosure as a convenient way to distinguish between two or more elements. Thus, reference to the first and second elements does not mean that only two elements can be employed or that the first element must precede the second element in some way.
  • determining may encompass a wide variety of actions. For example, “determination (decision)” includes determination, calculation, calculation, processing, derivation, investigating, looking up (eg, table, (Searching in a database or another data structure), ascertaining, etc. may be considered to be “determining”.
  • determination (decision) includes receiving (for example, receiving information), transmitting (for example, transmitting information), input (input), output (output), access ( accessing) (e.g., accessing data in memory), etc. may be considered to be “determining”.
  • determination is considered to be “determination (resolving)”, “selecting”, “choosing”, “establishing”, “comparing”, etc. Also good. That is, “determination (determination)” may be regarded as “determination (determination)” of some operation.
  • connection is 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”.
  • 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) region, and the like.

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  • Mobile Radio Communication Systems (AREA)

Abstract

Selon un mode de réalisation, la présente invention concerne un terminal d'utilisateur qui est caractérisé en ce qu'il comprend : une unité de transmission qui exécute une transmission non basée sur un livre de codes (NCB); et une unité de commande qui détermine la puissance de transmission d'un signal de référence de suivi de phase (PTRS) dans la transmission basée sur NCB. Selon un mode de réalisation de la présente invention, la puissance de transmission PTRS dans la transmission NCB peut être déterminée de manière appropriée.
PCT/JP2018/019402 2018-05-18 2018-05-18 Terminal utilisateur et procédé de communication sans fil WO2019220644A1 (fr)

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PCT/JP2018/019402 WO2019220644A1 (fr) 2018-05-18 2018-05-18 Terminal utilisateur et procédé de communication sans fil

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WO2019220644A1 true WO2019220644A1 (fr) 2019-11-21

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115088312A (zh) * 2019-12-12 2022-09-20 株式会社Ntt都科摩 终端以及无线通信方法

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
MEDIATEK INC: "Remaining issues on PT -RS", 3GPP TSG RAN WG1 MEETING #92BIS RL-1804076, vol. RAN WG1, 15 April 2018 (2018-04-15) - 20 April 2018 (2018-04-20), XP051426365 *
PANASONIC: "Remaining issues on PT -RS", 3GPP TSG RAN WG1 MEETING #92BIS RL-1804273, vol. RAN WG1, 15 April 2018 (2018-04-15) - 20 April 2018 (2018-04-20), XP051426561 *
SAMSUNG: "Issues on PTRS", 3GPP TSG RAN WG1 MEETING #92B RL-1804367, vol. RAN WG1, 15 April 2018 (2018-04-15) - 20 April 2018 (2018-04-20), XP051426652 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115088312A (zh) * 2019-12-12 2022-09-20 株式会社Ntt都科摩 终端以及无线通信方法

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