WO2019155637A1 - Dispositif de transmission, dispositif de réception et procédé de communication sans fil - Google Patents

Dispositif de transmission, dispositif de réception et procédé de communication sans fil Download PDF

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Publication number
WO2019155637A1
WO2019155637A1 PCT/JP2018/004737 JP2018004737W WO2019155637A1 WO 2019155637 A1 WO2019155637 A1 WO 2019155637A1 JP 2018004737 W JP2018004737 W JP 2018004737W WO 2019155637 A1 WO2019155637 A1 WO 2019155637A1
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Prior art keywords
transmission
slot
data
unit
signal
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PCT/JP2018/004737
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English (en)
Japanese (ja)
Inventor
一樹 武田
聡 永田
ホワン ワン
リフェ ワン
ギョウリン コウ
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株式会社Ｎｔｔドコモ
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Priority to PCT/JP2018/004737 priority Critical patent/WO2019155637A1/fr
Publication of WO2019155637A1 publication Critical patent/WO2019155637A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the present invention relates to a transmission device, a reception device, 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.
  • a 1 ms subframe (also referred to as a transmission time interval (TTI), etc.) is used for downlink (DL) and / or uplink. Communication of a link (UL: Uplink) is performed.
  • the subframe is a transmission time unit of one channel-encoded data packet, and is a processing unit such as scheduling, link adaptation, retransmission control (HARQ: Hybrid Automatic Repeat reQuest).
  • a radio base station controls data allocation (scheduling) to user terminals (UE: User Equipment), and uses downlink control information (DCI) to control data transmission.
  • DCI downlink control information
  • a scheduling instruction is notified to the UE.
  • a UE compliant with existing LTE for example, LTE Rel. 8-13
  • receives a sub-station after a predetermined period for example, 4 ms
  • DCI also called UL grant
  • slot unit scheduling slot base scheduling
  • mini slot unit scheduling mini slot base scheduling
  • mini-slot repetition data is repeatedly transmitted (mini-slot repetition) in a predetermined period by applying mini-slot base scheduling.
  • sufficient studies have not yet been made on how to control repeated transmission of each data (for example, allocation of time resources used for transmission). If repeated transmission is not appropriately performed, there is a possibility that communication throughput and / or communication quality may deteriorate.
  • an object of the present disclosure is to provide a transmission device, a reception device, and a wireless communication method that can appropriately perform repeated transmission.
  • a transmission apparatus includes a transmission unit that repeatedly transmits a physical shared channel with a predetermined symbol length in at least one of a one-slot period and a plurality of slots, and each physical to which repeated transmission is applied. And a control unit that controls the transmission so that the transmission of the shared channel does not cross the slot boundary.
  • FIG. 1A and 1B are diagrams illustrating an example of repeated transmission control in the first mode.
  • 2A and 2B are diagrams illustrating another example of repeated transmission control in the first mode.
  • FIG. 3 is a diagram illustrating an example of repeated transmission control in the second mode.
  • 4A to 4C are diagrams illustrating an example of repeated transmission control in the third mode.
  • FIG. 5 is a diagram illustrating an example of a schematic configuration of a wireless communication system according to an embodiment of the present invention.
  • FIG. 6 is a diagram illustrating an example of the overall configuration of a radio base station according to an embodiment of the present invention.
  • FIG. 7 is a diagram illustrating an example of a functional configuration of a radio base station according to an embodiment of the present invention.
  • FIG. 8 is a diagram illustrating an example of the overall configuration of a user terminal according to an embodiment of the present invention.
  • FIG. 9 is a diagram illustrating an example of a functional configuration of a user terminal according to an embodiment of the present invention.
  • FIG. 10 is a diagram illustrating an example of a hardware configuration of a radio base station and a user terminal according to an embodiment of the present invention.
  • a slot is one of basic transmission units, and one slot is composed of a predetermined number of symbols.
  • the slot period is composed of a first number of symbols (for example, 14 symbols), and in extended CP (extended CP), the slot period is composed of a second number of symbols (for example, 12 symbols). Is done.
  • a minislot corresponds to a period composed of a number of symbols equal to or less than a predetermined value (for example, 14 symbols (or 12 symbols).
  • a predetermined value for example, 14 symbols (or 12 symbols).
  • a minislot has a predetermined number ( For example, the number of symbols may be 2, 4 or 7.
  • the slot-based scheduling (type A) and the mini-slot base scheduling (type B) may be configured such that different resource allocation methods are applied.
  • the PDSCH start position in the slot is selected from preset candidate symbols, and the number of PDSCH allocation symbols (PDSCH length) is selected from a range from a predetermined value (X) to 14.
  • PDSCH length is selected from a range from a predetermined value (X) to 14.
  • X predetermined value
  • Candidate symbols that are candidates for the start position correspond to, for example, predetermined symbol indexes (for example, # 0, # 1, # 2, and # 3) in the slot.
  • minislot-based scheduling also referred to as PDSCH mapping type B
  • DL for example, PDSCH transmission
  • the number of PDSCH allocation symbols (PDSCH length) is selected from a preset number of candidate symbols, and the PDSCH start position in the slot is set to any location (symbol) in the slot.
  • the number of PDSCH-length candidate symbols corresponds to, for example, a predetermined number (2, 4, or 7 symbols). That is, the PDSCH start position is set flexibly.
  • slot-based scheduling also referred to as PUSCH mapping type A
  • PUSCH mapping type A slot-based scheduling
  • the PDSCH start position in the slot is selected from preset candidate symbols (for example, predetermined symbol index # 0), and the number of PDSCH allocation symbols (PDSCH length) is within a range from a predetermined value (Y) to 14. Selected.
  • mini-slot based scheduling (also referred to as PUSCH mapping type B) is applied in UL (for example, PUSCH transmission).
  • PDSCH length the number of PDSCH allocated symbols
  • start position of PDSCH in the slot is set to any location (symbol) in the slot. . That is, the PDSCH start position is set flexibly.
  • the minislot-based scheduling may be PDSCH and / or PUSCH transmission that is configured with 2, 4, or 7 symbols and can flexibly set the start symbol position.
  • a PDSCH that is not mini-slot-based scheduling may be a PDSCH having a start symbol position of the 0th to 3rd symbols in the slot and having a predetermined symbol length or more.
  • a PUSCH that is not mini-slot-based scheduling may be a PUSCH having a start symbol position of the 0th symbol in the slot and having a predetermined symbol length or more.
  • PDSCH and PUSCH that are not minislot-based scheduling may be referred to as PDSCH / PUSCH mapping type A
  • PDSCH and PUSCH that are minislot-based scheduling may be referred to as PDSCH / PUSCH mapping type B
  • DMRSs may be inserted at different positions according to the PDSCH / PUSCH mapping type.
  • which mapping type PDSCH / PUSCH is used may be set by higher layer signaling such as RRC, may be notified by DCI, or may be recognized by a combination of both. Also good.
  • the base station repeatedly transmits DL data (for example, downlink shared channel (PDSCH)) a predetermined number of times.
  • DL data for example, downlink shared channel (PDSCH)
  • UL data for example, uplink shared channel (PUSCH)
  • slot-based scheduling When slot-based scheduling is applied, it is conceivable that data is allocated to each slot over a plurality of slots and is repeatedly transmitted (inter-slot repetition). In slot-based scheduling, data allocation is controlled on a slot basis (within each slot), so that data is not allocated across slot boundaries.
  • minislot-based scheduling when minislot-based scheduling is applied, data is repeatedly transmitted in units of a predetermined number of symbols. Therefore, depending on the number of repeated transmissions (for example, K), a data allocation unit (data length of each repeated transmission), a period during which repeated transmission is applied, etc., one transmission among a plurality of repeated transmissions (data allocation) A case occurs where (data allocation) crosses a slot-boundary.
  • the slot Since the slot is used as a basic unit of transmission, when allocation of data or the like crosses the boundary of the slot, collision with other signals and / or channels occurs, transmission power control becomes complicated, and communication throughput is increased. And / or there is a risk of degradation of communication quality.
  • the present inventors have conceived that when repeated transmission is applied to data scheduled on a mini-slot basis, control is performed so that each piece of repeatedly transmitted data is not (or does not cross) a slot boundary. .
  • an arbitrary signal and channel may be read with a prefix of “NR ⁇ ” indicating that it is for NR.
  • repeated transmission of DL data (PDSCH) in DL is taken as an example, but the present invention can be similarly applied to repeated transmission of UL data (PUSCH) in UL. Further, the following embodiments may be applied to repetitive transmission of signals and / or channels other than data.
  • a base station that transmits DL data in DL and / or a UE that transmits UL data in UL may be read as a transmitting device. Also, a base station that receives UL data in DL and / or a UE that transmits DL data in DL may be read as a receiving device.
  • FIG. 1 shows an example in which data (or physical shared channel) to which minislot-based scheduling is applied is repeatedly transmitted.
  • data transmission with a data length of 4 symbols is repeated 4 times over 2 slots.
  • the data length is not limited to 4 symbols, but may be other values (for example, 2 symbols or 7 symbols).
  • the number of data repetitions (K) is not limited to four, and may be another value.
  • the data length may be read as PDSCH length or PUSCH length.
  • the repeated transmission may be controlled by using the first available resource (resource earlier in the time direction) in order from among consecutive available symbols (consecutive available symbols). Thereby, it is possible to reduce the delay of repeated transmission.
  • FIG. 1 shows an example in which all symbols after symbol # 3 in slot #n can be used for data transmission (when repeated transmission is continuously arranged), but is not limited thereto. Symbols used for other signals (or channels) may be inserted between one data transmission or a plurality of data transmissions.
  • a symbol (U) notified as UL from a base station, a symbol (X) notified as flexible, and a control channel (for example, between consecutive symbols constituting one data transmission) .
  • At least one of symbols used in the control resource set may be inserted.
  • a data transmission period is set over 5 symbols (using 4 of 5 symbols) It is good.
  • a symbol (D) notified as DL from the base station, a symbol (X) notified as flexible, and control information (for example, between consecutive symbols constituting one data transmission) At least one of a symbol used for the short PUCCH and a symbol used for the reference signal (SRS) may be inserted.
  • RV Redundancy Version
  • Data is allocated (shifted).
  • the order of RVs assigned to each repetition is shifted.
  • Puncture processing and / or rate matching processing may be applied to a region where data is not allocated (symbol # 0 in slot # n + 1 in FIG. 2A).
  • symbol # 0 in slot # n + 1 in FIG. 2A When the number of data allocation resources is the same in the two slots, one of the slots (for example, a slot with a small index) may be selected.
  • data transmission may be performed by increasing the coding rate in consideration of puncturing and / or rate matching processing. Further, when the coding rate becomes higher than a predetermined value (for example, 0.93), the transmission may be dropped.
  • a predetermined value for example, 0.93
  • the resource allocation area in the frequency direction for the data may be increased. Therefore, even when puncturing and / or rate matching processing is performed, data transmission can be performed while suppressing an increase in coding rate (or without increasing the coding rate).
  • the receiver (user terminal in the case of downlink, base station in the case of uplink) is subjected to special processing such as an increase in coding rate and a change in resource allocation for data transmission arranged across slot boundaries, Since reception quality is different from transmission of other repetition numbers, it may be controlled not to perform reception processing.
  • the range for repeated transmission is limited to a predetermined slot (for example, 1 slot).
  • a predetermined slot for example, 1 slot.
  • the data length is not limited to 4 symbols, but may be other values (for example, 2 symbols or 7 symbols).
  • the number of data repetitions (K) is not limited to two, and may be another value.
  • the repeated transmission may be controlled by using the first available resource (resource earlier in the time direction) in order from among consecutive available symbols (consecutive available symbols).
  • FIG. 3 shows a case where consecutive symbols after symbol # 3 in slot #n can be used for data transmission.
  • the number of symbols that can be used for repeated transmission is 11 (# 3- # 13).
  • the number of repetitions of data transmission with a data length of 4 is 2.
  • the base station sets the number of repetitions so that repeated transmission of data (DL data and / or UL data) within one slot range based on the data length (L), the start symbol position (S), etc. May be notified.
  • the UE may control at least one of reception of DL data repeatedly transmitted and repeated transmission of UL transmission on the assumption that repeated transmission is not set over a plurality of slots.
  • intra-slot repetition intra-slot repetition
  • inter-slot repetition inter-slot repetition
  • the base station may set intra-slot repetitive transmission and inter-slot repetitive transmission so that each repetitive transmission is not arranged across at least a slot boundary.
  • intra-slot repetitive transmission may be preferentially applied compared to inter-slot repetitive transmission. For example, when repeat transmission is set a predetermined number of times (for example, K times) for DL data (or UL data), inter-slot repetition is applied only when the number of repetitions in a slot is smaller than K.
  • repeated transmission within a slot may be controlled by sequentially using resources for initial transmission (resources earlier in the time direction) that can be used for transmission among consecutive available symbols (consecutive available symbols). Good.
  • FIG. 4 shows an example in which repeated transmission is controlled by setting repeated transmission within a slot and repeated transmission between slots.
  • the data length is not limited to 4 symbols, but may be another value (for example, 2 symbols or 7 symbols), and the data start position is not limited to this.
  • the number of data repetitions (K) is not limited to four, and may be another value.
  • the same symbol allocation is applied to repeated transmission between different slots (here, slot #n and slot # n + 1). For example, for repeated transmission within a slot, a number of times (for example, ⁇ 1, 2, 4, 8 ⁇ ) selected from a predetermined number of candidates (for example, ⁇ 1, 2, 4, 8 ⁇ ) The maximum number that can be placed is applied.
  • a number of times for example, ⁇ 1, 2, 4, 8 ⁇
  • a predetermined number of candidates for example, ⁇ 1, 2, 4, 8 ⁇
  • repeated transmission is set at the same symbol position in slot #n and slot # n + 1.
  • Data is allocated.
  • the fourth iteration (K 4) of symbols # 6- # 9 in slot # n + 1.
  • Data is allocated.
  • the receiver can easily perform reception signal processing using repetition over a plurality of slots.
  • control is performed so that the start position (start symbol of each repeated transmission transmitted first in the slot) is the same in each slot (here, slot #n and slot # n + 1). To do.
  • repeated transmission in the slot is applied as much as possible so as not to be arranged across the slot boundary, and repeated transmission is performed over the next and subsequent slots (the same start position) when repeated transmission is not completed within one slot.
  • repeat transmission start position is symbol # 2 and the data length is 4 symbols
  • repeat transmission in one slot is set to 3.
  • number of repetitions is less than 4 in one slot
  • repeated transmission is performed in the next slot # n + 1.
  • repeat transmission within a slot is applied as much as possible so as not to be placed across slot boundaries, and when repeated transmission is not completed within one slot, repeated transmission is performed over the next and subsequent slots.
  • repeat transmission start position is symbol # 2 and the data length is 4 symbols
  • repeat transmission in one slot is set to 3.
  • number of repetitions is less than 4 in one slot
  • repeated transmission is performed in the next slot # n + 1.
  • the start position of repeated transmission in the next slot # n + 1 may be a symbol having the smallest available index.
  • 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 of the present invention.
  • FIG. 5 is a diagram illustrating an example of a schematic configuration of a wireless communication system according to an embodiment of the present invention.
  • 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. 6 is a diagram illustrating an example of the overall configuration of a radio base station according to an embodiment of the present invention.
  • 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 each 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.
  • the allocated length symbol length
  • FIG. 7 is a diagram illustrating an example of a functional configuration of a radio base station according to an embodiment of the present invention.
  • 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. These configurations may be included in the radio base station 10, and a part 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.
  • control unit 301 controls transmission so that transmission of each downlink physical shared channel to which repeated transmission is applied does not cross the slot boundary. For example, the control unit 301 may drop a transmission of a predetermined downlink physical shared channel that crosses the slot boundary.
  • the control unit 301 uses only the slot in which a large number of allocation resources for the predetermined downlink physical shared channel are arranged and uses the predetermined downlink physical shared channel. It may be controlled to perform transmission of.
  • control unit 301 may perform control (scheduling) so that the downlink and / or uplink physical shared channel is repeatedly transmitted within the range of one slot.
  • control unit 301 uses successive symbols that can be used for transmission of the downlink and / or uplink physical shared channel to perform control (scheduling) so as to repeatedly perform transmission in the time direction so as not to cross the slot boundary. May be.
  • control scheduling
  • a configuration may be adopted in which intra-slot repetitive transmission and inter-slot repetitive transmission are scheduled.
  • 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.
  • FIG. 8 is a diagram illustrating an example of the overall configuration of a user terminal according to an embodiment of the present invention.
  • 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 each 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.
  • the allocated length symbol length
  • FIG. 9 is a diagram illustrating an example of a functional configuration of a user terminal according to an embodiment of the present invention.
  • 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.
  • control unit 401 controls transmission so that transmission of each uplink physical shared channel to which repeated transmission is applied does not cross the slot boundary. For example, the control unit 401 may drop a transmission of a predetermined uplink physical shared channel that crosses the slot boundary.
  • the control unit 401 uses only the slot in which a large number of allocated resources for the predetermined uplink physical shared channel are arranged and uses the predetermined uplink physical shared channel. It may be controlled to perform transmission of.
  • control unit 401 may perform control so that repeated transmission of the uplink physical shared channel is performed within the range of one slot.
  • control unit 401 may use a continuous symbol that can be used for transmission of the uplink physical shared channel to perform control so as to repeatedly perform transmission in the time direction so as not to cross the slot boundary.
  • a configuration may be adopted in which intra-slot repetitive transmission and inter-slot repetitive transmission are scheduled.
  • 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.
  • each functional block (components) are realized by any combination of hardware and / or software.
  • the method for realizing each functional block is not particularly limited. That is, each functional block may be realized using one device physically and / or logically coupled, or directly and / or two or more devices physically and / or logically separated. Alternatively, it may be realized indirectly by connecting (for example, using wired and / or wireless) and using these plural devices.
  • a radio base station, a user terminal, etc. in an embodiment of the present invention may function as a computer that performs processing of the radio communication method of the present invention.
  • FIG. 10 is a diagram illustrating an example of a hardware configuration of a radio base station and a user terminal according to an embodiment of the present invention.
  • 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 and controlling reading and / or 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 programs (program codes), software modules, data, and the like from the storage 1003 and / or the communication device 1004 to the memory 1002, and executes various processes according to these.
  • programs program codes
  • software modules software modules
  • data data
  • 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 programs (program codes), software modules, and the like that can be executed to implement the wireless communication method according to an embodiment of the present invention.
  • 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 a wired and / or 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 frequency division duplex (FDD) and / or time division duplex (TDD). It may be configured.
  • 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 channel and / or symbol may be a signal (signaling).
  • 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.
  • the slot may be a time unit based on the numerology.
  • 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.
  • 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 of a channel-encoded data packet (transport block), a code block, and / 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, and / or a code word is actually mapped 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.
  • the information, parameters, and the like described in this specification may be expressed using absolute values, may be expressed using relative values from a predetermined value, or other corresponding information may be used. May be represented.
  • the radio resource may be indicated by a predetermined index.
  • names used for parameters and the like 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.
  • information, signals, etc. can be output from the upper layer to the lower layer and / or from 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.
  • software can use websites, servers using wired technology (coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), etc.) and / or wireless technology (infrared, microwave, etc.) , Or other remote sources, these wired and / or wireless technologies are included within the definition of transmission media.
  • system and “network” used in this specification are used interchangeably.
  • base station BS
  • radio base station eNB
  • gNB gNodeB
  • cell gNodeB
  • cell group a base station
  • carrier a base station
  • a base station may also be called in terms such as a fixed station, NodeB, eNodeB (eNB), access point, transmission point, reception point, femtocell, and small 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: The term “cell” or “sector” refers to part or all of the coverage area of a base station and / or base station subsystem that provides communication service in this coverage. Point to.
  • RRH indoor small base station
  • MS mobile station
  • UE user equipment
  • terminal may be used interchangeably.
  • a base station may also be called in terms such as a fixed station, NodeB, eNodeB (eNB), access point, transmission point, reception point, femtocell, and small cell.
  • NodeB NodeB
  • eNodeB eNodeB
  • access point transmission point
  • reception point femtocell
  • small cell small cell
  • a mobile station is defined by those skilled in the art as 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 It may also be called terminal, remote terminal, handset, user agent, mobile client, client or some other suitable terminology.
  • the radio base station in this specification may be read by the user terminal.
  • each aspect / embodiment of the present invention may be applied to a configuration in which communication between a radio base station and a user terminal is replaced with communication between a plurality of user terminals (D2D: Device-to-Device).
  • 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 “side”.
  • the uplink channel may be read as a side channel.
  • a user terminal in this specification may be read by 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 this specification 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 this specification may be changed as long as there is no contradiction.
  • the methods described herein present the elements of the various steps in an exemplary order and are not limited to the specific order presented.
  • Each aspect / embodiment described in this specification 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 .20, UWB (Ultra-WideBand), Bluetooth (registered trademark) ), A system using another appropriate wireless communication method, and / or a next generation system extended based on these methods.
  • LTE Long Term Evolution
  • LTE-A Long Term Evolution-Advanced
  • the phrase “based on” does not mean “based only on”, unless expressly specified otherwise. In other words, the phrase “based on” means both “based only on” and “based at least on.”
  • any reference to elements using designations such as “first”, “second”, etc. as used herein does not generally limit the amount or order of those elements. These designations can be used herein 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” means calculating, computing, processing, deriving, investigating, looking up (eg, table, database or other data). It may be considered to “judge” (search in structure), ascertaining, etc.
  • “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”. Also, “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 between two or more elements or By coupling, it can include the presence of one or more intermediate elements between two elements that are “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 can be considered “connected” or “coupled” to each other, such as with electromagnetic energy having wavelengths in the microwave and / or light (both visible and invisible) regions.

Abstract

La présente invention concerne, selon un mode de réalisation, un dispositif de transmission qui est caractérisé, afin de réaliser correctement une transmission répétitive, en ce qu'il comprend : une unité de transmission pour transmettre de manière répétée un canal partagé physique dans une longueur de symbole prédéterminée pendant une période de créneau et/ou une période s'étendant sur de multiples créneaux ; et une unité de commande pour commander la transmission de telle sorte que la transmission de chaque canal physique partagé devant être transmis de manière répétée ne sera pas effectuée à travers une limite de créneau.
PCT/JP2018/004737 2018-02-09 2018-02-09 Dispositif de transmission, dispositif de réception et procédé de communication sans fil WO2019155637A1 (fr)

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JP7135110B2 (ja) 2018-04-23 2022-09-12 テレフオンアクチーボラゲット エルエム エリクソン（パブル） 繰り返しのための時間領域割り当て
US11510196B2 (en) 2018-04-23 2022-11-22 Telefonaktiebolaget Lm Ericsson (Publ) Time-domain allocation for repetitions
US11910367B2 (en) 2018-04-23 2024-02-20 Telefonaktiebolaget Lm Ericsson (Publ) Time-domain allocation for repetitions
US20210235503A1 (en) * 2018-05-10 2021-07-29 Telefonaktiebolaget Lm Ericsson (Publ) Signaling mechanism for message and physical uplink shared channel repetitions
US11751252B2 (en) * 2018-05-10 2023-09-05 Telefonaktiebolaget Lm Ericsson (Publ) Signaling mechanism for message and physical uplink shared channel repetitions
WO2021159263A1 (fr) * 2020-02-10 2021-08-19 Oppo广东移动通信有限公司 Procédé de transmission de données et dispositif associé

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