WO2022029980A1 - Terminal - Google Patents

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Publication number
WO2022029980A1
WO2022029980A1 PCT/JP2020/030273 JP2020030273W WO2022029980A1 WO 2022029980 A1 WO2022029980 A1 WO 2022029980A1 JP 2020030273 W JP2020030273 W JP 2020030273W WO 2022029980 A1 WO2022029980 A1 WO 2022029980A1
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WIPO (PCT)
Prior art keywords
dci
slot
control information
scs
downlink control
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PCT/JP2020/030273
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English (en)
Japanese (ja)
Inventor
浩樹 原田
大輔 栗田
慎也 熊谷
尚哉 芝池
真由子 岡野
ジン ワン
Original Assignee
株式会社Ｎｔｔドコモ
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社Ｎｔｔドコモ filed Critical 株式会社Ｎｔｔドコモ
Priority to PCT/JP2020/030273 priority Critical patent/WO2022029980A1/fr
Priority to CN202080104255.6A priority patent/CN116018862A/zh
Publication of WO2022029980A1 publication Critical patent/WO2022029980A1/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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling

Definitions

  • This disclosure relates to a terminal that executes wireless communication, and particularly to a terminal that supports a wide subcarrier interval such as 960 kHz.
  • the 3rd Generation Partnership Project (3GPP) specifies the 5th generation mobile communication system (also called 5G, New Radio (NR) or Next Generation (NG)), and next-generation specifications called Beyond 5G, 5G Evolution or 6G. We are also proceeding with the conversion.
  • 5G New Radio
  • NG Next Generation
  • FR1 410MHz-7.125GHz
  • FR2 24.25GHz-52.6GHz
  • Non-Patent Document 1 NR that supports up to 71GHz, which exceeds 52.6GHz, is also under consideration.
  • 5G Evolution or 6G aim to support frequency bands above 71GHz.
  • Non-Patent Document 2 PTRS
  • DCI Downlink Control Information
  • the following disclosure was made in view of such a situation, and the processing load related to downlink control information is reduced even when a wide SCS such as 960 kHz is supported in a high frequency band such as 52.6 to 71 GHz.
  • the purpose is to provide a possible terminal.
  • One aspect of the present disclosure is a receiving unit (control signal / reference signal processing unit 240) that receives downlink control information, and a control unit (control unit 270) that sets a downlink based on the downlink control information.
  • the control unit When a second subcarrier interval wider than the first subcarrier interval is applied, the control unit has a slot to which the instruction by the downlink control information is applied from a slot containing the downlink control information. Is a terminal (UE200) that is assumed to be offset later.
  • One aspect of the present disclosure is a receiving unit (control signal / reference signal processing unit 240) that receives downlink control information, and a control unit (control unit 270) that sets a downlink based on the downlink control information.
  • the control unit sets the number of slots indicated by the downlink control information to the monitoring cycle of the downlink control information. It is a terminal (UE200) that is assumed to be larger than the number of slots included.
  • FIG. 1 is an overall schematic configuration diagram of the wireless communication system 10.
  • FIG. 2 is a diagram showing a frequency range used in the wireless communication system 10.
  • FIG. 3 is a diagram showing a configuration example of a wireless frame, a subframe, and a slot used in the wireless communication system 10.
  • FIG. 4 is a functional block configuration diagram of the UE 200.
  • FIG. 5 is a diagram showing an example of a communication sequence relating to the setting of a radio link including a downlink (DL) based on DCI.
  • FIG. 6 is a diagram showing an example (No. 1) of the relationship between the slot to which the DCI instruction is applied, the minimum time offset of the DCI, and the monitoring cycle of the DCI.
  • FIG. 7 is a diagram showing an example (No.
  • FIG. 8 is a diagram showing an example of a slot to which the DCI instruction is applied (when the same slot format pattern is repeated).
  • FIG. 9 is a diagram showing a basic configuration example of the IAB.
  • FIG. 10 is a diagram showing an example of the hardware configuration of the wireless communication nodes 100A to 100C and UE200.
  • FIG. 1 is an overall schematic configuration diagram of the wireless communication system 10 according to the present embodiment.
  • the wireless communication system 10 is a wireless communication system according to 5G New Radio (NR), and includes Next Generation-Radio Access Network 20 (hereinafter, NG-RAN20, and terminal 200 (hereinafter, UE200, User Equipment, UE)).
  • NG-RAN20 Next Generation-Radio Access Network 20
  • UE200 User Equipment
  • the wireless communication system 10 may be a wireless communication system according to a method called Beyond 5G, 5G Evolution or 6G.
  • NG-RAN20 includes a wireless base station 100 (hereinafter, gNB100).
  • gNB100 wireless base station 100
  • the specific configuration of the wireless communication system 10 including the number of gNBs and UEs is not limited to the example shown in FIG.
  • the NG-RAN20 actually contains multiple NG-RANNodes, specifically gNB (or ng-eNB), and is connected to a core network (5GC, not shown) according to 5G.
  • NG-RAN20 and 5GC may be simply expressed as "network”.
  • GNB100 is a wireless base station that complies with 5G, and executes wireless communication according to UE200 and 5G.
  • the gNB100 and UE200 are Massive MIMO (Multiple-Input Multiple-Output), which generates a more directional antenna beam (hereinafter referred to as beam BM) by controlling radio signals transmitted from a plurality of antenna elements. It can support carrier aggregation (CA) that uses component carriers (CC) in a bundle, and dual connectivity (DC) that communicates simultaneously between the UE and each of the two NG-RAN Nodes.
  • CA carrier aggregation
  • CC component carriers
  • DC dual connectivity
  • the gNB100 can transmit a plurality of beam BMs having different transmission directions (simply called a direction, a radial direction, coverage, etc.) in space and time division.
  • the gNB100 may transmit a plurality of beam BMs at the same time.
  • the wireless communication system 10 may support a plurality of frequency ranges (FR).
  • FIG. 2 shows the frequency range used in the wireless communication system 10.
  • FR1 uses a Sub-Carrier Spacing (SCS) of 15, 30 or 60 kHz and may use a bandwidth (BW) of 5-100 MHz.
  • SCS Sub-Carrier Spacing
  • BW bandwidth
  • FR2 has a higher frequency than FR1, and SCS of 60 or 120 kHz (240 kHz may be included) is used, and a bandwidth (BW) of 50 to 400 MHz may be used.
  • SCS may be interpreted as numerology. Numerology is defined in 3GPP TS38.300 and corresponds to one subcarrier interval in the frequency domain.
  • the wireless communication system 10 also supports a higher frequency band than the frequency band of FR2. Specifically, the wireless communication system 10 supports a frequency band exceeding 52.6 GHz and up to 71 GHz. Such a high frequency band may be referred to as "FR2x" for convenience.
  • Cyclic Prefix-Orthogonal Frequency Division Multiplexing CP-OFDM
  • DFT- Discrete Fourier Transform-Spread
  • S-OFDM Discrete Fourier Transform-Spread
  • FIG. 3 shows a configuration example of a wireless frame, a subframe, and a slot used in the wireless communication system 10.
  • Table 1 shows the relationship between the SCS and the symbol period.
  • the symbol period may be referred to as a symbol length, a time direction, a time domain, or the like.
  • the frequency direction may be referred to as a frequency domain, a resource block, a subcarrier, a BWP (Bandwidth part), or the like.
  • the number of symbols constituting one slot does not necessarily have to be 14 symbols (for example, 28, 56 symbols). Further, the number of slots per subframe may differ depending on the SCS.
  • an SSB (SS / PBCH Block) composed of a synchronization signal (SS: Synchronization Signal) and a downlink physical broadcast channel (PBCH: Physical Broadcast CHannel) may be used.
  • SS Synchronization Signal
  • PBCH Physical Broadcast CHannel
  • SSB is mainly transmitted from the network periodically in order for UE200 to execute cell ID and reception timing detection at the start of communication.
  • SSB is also used to measure the reception quality of each cell.
  • As the transmission cycle (periodicity) of SSB 5, 10, 20, 40, 80, 160 milliseconds and the like may be specified.
  • the initial access UE200 may be assumed to have a transmission cycle of 20 milliseconds.
  • the network can notify the UE200 of the actually transmitted SSB index display (ssb-PositionsInBurst) by signaling system information (SIB1) or radio resource control layer (RRC).
  • SIB1 signaling system information
  • RRC radio resource control layer
  • PSS Primary SS
  • SSS Secondary SS
  • PSS is a known signal that the UE200 first attempts to detect in the cell search procedure.
  • the SSS is a known signal transmitted to detect the physical cell ID in the cell search procedure.
  • PBCH After detecting an SS / PBCH Block, PBCH has a radio frame number (SFN: SystemFrameNumber) and an index for identifying the symbol positions of multiple SS / PBCH Blocks in a half frame (5 milliseconds).
  • SFN SystemFrameNumber
  • the UE200 contains the information needed to establish frame synchronization with the NR cell formed by the gNB100.
  • the PBCH can also include system parameters required to receive system information (SIB). Further, the SSB also includes a reference signal for demodulation of the broadcast channel (DMRS for PBCH).
  • DMRS for PBCH is a known signal transmitted to measure the radio channel state for PBCH demodulation.
  • FIG. 4 is a functional block configuration diagram of UE200.
  • the UE 200 includes a radio signal transmission / reception unit 210, an amplifier unit 220, a modulation / demodulation unit 230, a control signal / reference signal processing unit 240, a coding / decoding unit 250, a data transmission / reception unit 260, and a control unit 270. ..
  • the radio signal transmission / reception unit 210 transmits / receives a radio signal according to NR.
  • the radio signal transmission / reception unit 210 corresponds to Massive MIMO, a CA that bundles a plurality of CCs, and a DC that simultaneously communicates between the UE and each of the two NG-RAN Nodes.
  • the amplifier unit 220 is composed of PA (Power Amplifier) / LNA (Low Noise Amplifier) and the like.
  • the amplifier unit 220 amplifies the signal output from the modulation / demodulation unit 230 to a predetermined power level. Further, the amplifier unit 220 amplifies the RF signal output from the radio signal transmission / reception unit 210.
  • the modulation / demodulation unit 230 executes data modulation / demodulation, transmission power setting, resource block allocation, etc. for each predetermined communication destination (gNB100, etc.).
  • Cyclic Prefix-Orthogonal Frequency Division Multiplexing (CP-OFDM) / Discrete Fourier Transform-Spread (DFT-S-OFDM) may be applied to the modulation / demodulation unit 230. Further, the DFT-S-OFDM may be used not only for the uplink (UL) but also for the downlink (DL).
  • the control signal / reference signal processing unit 240 executes processing related to various control signals transmitted / received by the UE 200 and processing related to various reference signals transmitted / received by the UE 200.
  • control signal / reference signal processing unit 240 receives various control signals transmitted from the gNB 100 via a predetermined control channel, for example, control signals of the radio resource control layer (RRC). Further, the control signal / reference signal processing unit 240 transmits various control signals to the gNB 100 via a predetermined control channel.
  • a predetermined control channel for example, control signals of the radio resource control layer (RRC).
  • RRC radio resource control layer
  • the control signal / reference signal processing unit 240 executes processing using a reference signal (RS) such as Demodulation Reference Signal (DMRS) and Phase Tracking Reference Signal (PTRS).
  • RS reference signal
  • DMRS Demodulation Reference Signal
  • PTRS Phase Tracking Reference Signal
  • DMRS is a reference signal (pilot signal) known between the base station and the terminal of each terminal for estimating the fading channel used for data demodulation.
  • PTRS is a terminal-specific reference signal for the purpose of estimating phase noise, which is a problem in high frequency bands.
  • the reference signal may include ChannelStateInformation-ReferenceSignal (CSI-RS), SoundingReferenceSignal (SRS), and PositioningReferenceSignal (PRS) for location information.
  • CSI-RS ChannelStateInformation-ReferenceSignal
  • SRS SoundingReferenceSignal
  • PRS PositioningReferenceSignal
  • control channels include PDCCH (Physical Downlink Control Channel), PUCCH (Physical Uplink Control Channel), RACH (Random Access Channel, Random Access Radio Network Temporary Identifier (RA-RNTI), Downlink Control Information (DCI)), and Physical. Broadcast Channel (PBCH) etc. may be included.
  • PDCCH Physical Downlink Control Channel
  • PUCCH Physical Uplink Control Channel
  • RACH Random Access Channel
  • RA-RNTI Random Access Radio Network Temporary Identifier
  • DCI Downlink Control Information
  • PBCH Broadcast Channel
  • the data channels include PDSCH (Physical Downlink Shared Channel) and PUSCH (Physical Uplink Shared Channel). Data may mean data transmitted over a data channel.
  • PDSCH Physical Downlink Shared Channel
  • PUSCH Physical Uplink Shared Channel
  • PUCCH may be interpreted as a UL physical channel used for UCI (Uplink Control Information) transmission.
  • UCI can be transmitted by either PUCCH or PUSCH depending on the situation.
  • the downlink control information (DCI) may always be transmitted by PDCCH and may not be transmitted via PDSCH.
  • UCI may include at least one of hybrid ARQ (HARQ: Hybrid automatic repeat request) ACK / NACK, scheduling request (SR) from UE200, and Channel State Information (CSI).
  • HARQ Hybrid automatic repeat request
  • SR scheduling request
  • CSI Channel State Information
  • timing and radio resources for transmitting PUCCH may be controlled by DCI as in the data channel.
  • control signal / reference signal processing unit 240 receives the downlink control information (DCI).
  • the control signal / reference signal processing unit 240 constitutes a receiving unit.
  • the control signal / reference signal processing unit 240 can receive DCI via the PDCCH.
  • DCI may be transmitted via a channel other than PDCCH.
  • control signal / reference signal processing unit 240 can transmit the capability of UE200 regarding DCI to the network.
  • control signal / reference signal processing unit 240 constitutes a transmission unit.
  • control signal / reference signal processing unit 240 may transmit to the network whether or not it corresponds to the offset between the slot to which the instruction by DCI is applied and the slot including the DCI.
  • the value of the Slot Format Indication (SFI) field is the DL BWP or UL BWP slot format starting from the slot where UE200 detected DCI format 2_0. Is specified as shown in UE200. That is, the slot containing the DCI and the slot to which the DCI instruction is applied may be the same.
  • the slot format is interpreted as a format indicating whether each symbol in the slot is a downlink (DL), an uplink (UL), or a Flexible (F) that can be used for any of DL or UL. It's okay.
  • the slot to which the instruction by DCI is applied and the slot containing the DCI are offset, that is, the slot to which the instruction by DCI is applied and the slot containing the DCI. May be different from.
  • the control signal / reference signal processing unit 240 may transmit to the network whether or not it corresponds to such an offset of the slot and / or the level of the offset (for example, the number of slots or the number of symbols).
  • the coding / decoding unit 250 executes data division / concatenation and channel coding / decoding for each predetermined communication destination (gNB100 or other gNB).
  • the coding / decoding unit 250 divides the data output from the data transmission / reception unit 260 into predetermined sizes, and executes channel coding for the divided data. Further, the coding / decoding unit 250 decodes the data output from the modulation / demodulation unit 230, and concatenates the decoded data.
  • the data transmission / reception unit 260 executes transmission / reception of Protocol Data Unit (PDU) and Service Data Unit (SDU).
  • the data transmitter / receiver 260 is a PDU / SDU in a plurality of layers (such as a medium access control layer (MAC), a radio link control layer (RLC), and a packet data convergence protocol layer (PDCP)). Assemble / disassemble the.
  • the data transmission / reception unit 260 executes data error correction and retransmission control based on the hybrid ARQ (Hybrid automatic repeat request).
  • the control unit 270 controls each functional block constituting the UE 200.
  • the control unit 270 can set the downlink (DL) based on the downlink control information (DCI).
  • DCI downlink control information
  • control unit 270 is instructed by DCI when an SCS wider than, for example, 120 kHz or 240 kHz SCS (first subcarrier interval), for example, 960 kHz SCS (second subcarrier interval) is applied. It can be assumed that the slot to which is applied is offset after the slot containing DCI.
  • control unit 270 may assume that the slot containing the DCI and the slot to which the instruction by the DCI is applied are provided with an offset of at least one slot. That is, the control unit 270 may assume that the offset between the slot to which the instruction by DCI is applied and the slot including DCI is one slot or more.
  • a slot containing DCI may be interpreted as a slot that has started receiving DCI via PDCCH, etc., and a slot to which DCI instructions are applied is a slot to which the slot format notified by DCI is started to be applied. May be interpreted as.
  • the offset does not necessarily have to be in slot units, but may be in symbol units, subframe units, or the like. Alternatively, the offset may be indicated directly by time (eg, microseconds).
  • the control unit 270 determines the number of slots specified by DCI. It may be assumed that it is larger than the DCI monitoring cycle. Specifically, the control unit 270 may assume that the number of slots indicated by DCI is larger than the number of slots included in the monitoring cycle of DCI.
  • the minimum number of slots specified by DCI may be assumed to be larger than the DCI monitoring cycle, which can also be indicated by the number of slots.
  • the number of slots specified by DCI may be interpreted as the number of slots for which the slot format is specified by DCI.
  • control unit 270 has a DCI monitoring cycle when an SCS (second subcarrier interval) such as 960 kHz is applied, and a DCI when an SCS (first subcarrier interval) such as 120 kHz or 240 kHz is applied. It may be assumed that it is longer than the monitoring cycle of.
  • the monitoring cycle does not necessarily have to be in slot units, but may be in symbol units, subframe units, or the like. Alternatively, the monitoring cycle may be indicated directly by time (eg, microseconds).
  • NR-U is applied in the frequency band 52.6-71 GHz
  • another numerology based on a simple extension of FR2 eg, 960 kHz SCS
  • another numerology to support one 2 GHz bandwidth eg, 960 kHz SCS. 120kHz SCS
  • other numerologies may not be supported.
  • the dynamic instruction of the slot format to the UE200 may not be immediately applicable from the slot provided by the DCI (that is, the slot containing the DCI), considering the processing power of the UE200 and the like. It should be noted that such a problem is common not only to the slot format but also to all dynamic instructions by DCI.
  • the UE200 may operate according to any of the following with respect to DCI.
  • the minimum time offset may be at least one slot, and may be two or more slots.
  • the minimum time offset may be predefined as a 3GPP specification or may be set by higher layer signaling such as RRC. Alternatively, the minimum time offset may be dynamically indicated, for example, in response to changes in the capabilities of the UE 200.
  • the difference may be called a margin
  • the minimum number of slots and the number of slots indicating the DCI monitoring cycle may be defined in advance as a 3GPP specification, RRC, etc. It may be set (may be based on the capability of UE200, etc.) by signaling in the upper layer of.
  • the value of the Slot Format Indication (SFI) field indicates to UE200 the slot format of DL BWP or UL BWP starting from the slot in which UE 200 detects DCI format 2_0. Is stipulated as.
  • DCI format 2_0 stipulates that the minimum number of slots concerned is the same as or longer than the monitoring cycle of PDCCH.
  • FIG. 5 shows an example of a communication sequence relating to the setting of a wireless link including a downlink (DL) based on DCI.
  • the UE 200 reports the UE capability including the minimum time offset as described above to the network (NG-RAN20) (S10).
  • NG-RAN20 network
  • UE capability may be reported by signaling in a higher layer such as RRC.
  • the network After acquiring UE capability from UE200, the network determines the content of DCI including SFI indication based on the availability of minimum time offset, and sends the determined DCI to UE200 (S20). As described above, in this embodiment, DCI format 2_0 is assumed.
  • the UE200 receives DCI and acquires the slot format (S30). Specifically, the UE 200 assumes that the slot to which the DCI indication is applied is offset after the slot containing the DCI, based on the minimum time offset.
  • the UE 200 may determine the slot to which the DCI instruction is applied based on the minimum time offset, and apply the indicated slot format.
  • the UE 200 may assume that the minimum number of slots indicated by DCI is larger than the number of slots indicating the monitoring cycle of DCI (see Alt.2).
  • the network and UE200 set the DL according to the slot format and set the uplink (S40).
  • 6 and 7 show an example of the relationship between the slot to which the DCI instruction is applied, the minimum time offset of DCI, and the monitoring cycle of DCI.
  • each of the rectangular frames corresponds to a slot.
  • the minimum time offset may be one slot or more.
  • the number of slots instructed by DCI may be the same as the number of slots (4 slots) in the monitoring period of DCI, and as shown in FIG. 7, it is instructed by DCI.
  • the number of slots to be played may be larger than the number of slots (4 slots) in the monitoring period of DCI.
  • the DCI (DCI format 2_0) includes the slot format from the slot containing the DCI to 4 slots ahead, that is, the slot containing the DCI in the next DCI monitoring cycle. You may specify the slot format.
  • the difference between the example shown in FIG. 6 and the example shown in FIG. 7 is whether or not the slot format instruction of the slot containing DCI is included (see the arrow in the figure).
  • the minimum value of the DCI monitoring cycle (which may be read as the PDCCH monitoring cycle) is preferably larger than that in the case of a narrow SCS such as 120 kHz or 240 kHz.
  • the minimum number of slots indicated by DCI is preferably larger than for narrow SCSs such as 120kHz or 240kHz.
  • the candidate value applied to narrow SCS such as 120kHz or 240kHz do not have to be applied to wide SCS such as 960kHz.
  • the candidate value may be larger. That is, the maximum number of slots indicated by DCI may be larger than for narrow SCSs such as 120kHz or 240kHz.
  • the application of the slot indicated by DCI may be changed as follows.
  • FIG. 8 shows an example of a slot to which the DCI instruction is applied (when the same slot format pattern is repeated).
  • the UE200 when the slot format pattern for 4 slots is dynamically instructed by DCI (hatched portion), the UE200 will perform the slot format pattern until a new DCI instruction is provided. It may be assumed that (4 slots) is repeated. Whether or not the UE200 expects such iterations, and / or at least one of the number of iterations, gNB100 may be set directly for the UE200 or may be signaled.
  • the UE200 When the UE200 receives a new DCI, it may follow the slot format pattern instructed by the DCI.
  • the UE200 is subject to DCI instructions if, for example, an SCS that is wider than the 120 kHz or 240 kHz SCS (first subcarrier spacing), for example, the 960 kHz SCS (second subcarrier spacing) is applied. It may be assumed that the slot to be offset is offset (one or more slots) after the slot containing the DCI.
  • a wide SCS such as 960kHz is supported in the high frequency band such as 52.6 to 71GHz, and even if the symbol length is shortened, the processing load related to DCI can be reduced. In other words, if the offset is not assumed, high-speed processing in a short time according to the shortened symbol length may be required, but according to UE200, a wide SCS such as 960kHz is used while avoiding such processing. Can be supported.
  • the UE 200 may assume that the number of slots specified by DCI is larger than the monitoring cycle of DCI when a wide SCS such as 960 kHz is applied. Therefore, the UE200 can determine the slot format up to the slot before the reception timing of the next DCI, and can further reduce the processing load based on the DCI.
  • the UE 200 has a DCI monitoring cycle when an SCS (second subcarrier interval) such as 960 kHz is applied, and an SCS (first subcarrier interval) such as 120 kHz or 240 kHz is applied. It may be assumed that it is longer than the DCI monitoring cycle. Therefore, the UE 200 can further reduce the processing load related to DCI even when the symbol length is shortened.
  • SCS second subcarrier interval
  • first subcarrier interval such as 120 kHz or 240 kHz
  • the UE200 can transmit the UE200's capability regarding DCI to the network.
  • the network is based on the UE200's ability for DCI, specifically the UE200's ability to indicate whether the slot to which the DCI instruction is applied and the slot containing the DCI can be offset.
  • Appropriate DCI can be set according to.
  • the above-mentioned operation related to DCI may be applied in Integrated Access and Backhaul (IAB) in which wireless access with UE200 and wireless backhaul between wireless communication nodes are integrated.
  • IAB Integrated Access and Backhaul
  • FIG. 9 is a diagram showing a basic configuration example of the IAB.
  • the radio communication node 100A may constitute an IAB donor in the IAB
  • the radio communication node 100B (and the radio communication node 100C) may constitute an IAB node in the IAB.
  • the IAB donor may be referred to as a higher-level node in relation to the IAB node.
  • the IAB donor may be referred to as the Parent node.
  • the IAB donor has a CU and the parent node is simply used as a name in relation to the IAB node (or child node) and may not have a CU.
  • the IAB node may be referred to as a subordinate node in relation to the IAB donor (parent node).
  • the wireless communication nodes 100A, 100B, and 100C can set a wireless access (Access link) with the UE 200 and a wireless backhaul (Backhaul link) between the wireless communication nodes via the cell.
  • a backhaul (transmission path) by a wireless link may be set between the wireless communication node 100A and the wireless communication node 100B, and between the wireless communication node 100B and the wireless communication node 100C.
  • the wireless resources used by DU include downlink (DL) and uplink (UL) from the viewpoint of DU.
  • Flexible time-resource (D / U / F) are classified into either Hard, Soft or Not Available (H / S / NA) type. Also, in Soft (S), available or not available is specified.
  • Flexible time-resource is a radio resource (time resource and / or frequency resource) that can be used for both DL and UL. Further, “Hard” is a wireless resource that can always be used for DU child link in which the corresponding time resource is connected to the child node or UE, and “Soft” is for DU child link of the corresponding time resource. It is a radio resource (DU resource) whose availability is explicitly or implicitly controlled by the IAB donor (parent node).
  • the wireless resource to be notified can be determined based on IA or INA.
  • IA means that the DU resource is explicitly or implicitly indicated as available. Also, “INA” means that the DU resource is explicitly or implicitly indicated as unavailable.
  • the above-mentioned operation related to DCI may be executed for DCI format 2_5 that notifies the availability of Soft resources.
  • the names of the IAB donor and IAB node are different as long as the configuration of the wireless communication node in which the wireless backhaul between the wireless communication nodes such as gNB and the wireless access to the terminal are integrated is adopted. May be good. For example, it may be simply called a first node, a second node, or the like, or it may be called an upper node, a lower node, a relay node, an intermediate node, or the like.
  • the wireless communication node may be simply referred to as a communication device or a communication node, or may be read as a wireless base station.
  • the block configuration diagram (FIG. 4) used in the description of the above-described embodiment shows a block of functional units.
  • These functional blocks are realized by any combination of at least one of hardware and software.
  • the method of realizing each functional block is not particularly limited. That is, each functional block may be realized using one physically or logically coupled device, or two or more physically or logically separated devices can be directly or indirectly (eg, for example). , Wired, wireless, etc.) and may be realized using these plurality of devices.
  • the functional block may be realized by combining the software with the one device or the plurality of devices.
  • Functions include judgment, decision, judgment, calculation, calculation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, solution, selection, selection, establishment, comparison, assumption, expectation, and assumption. Broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc., but limited to these I can't.
  • a functional block (configuration unit) that makes transmission function is called a transmitting unit (transmitting unit) or a transmitter (transmitter).
  • the realization method is not particularly limited.
  • FIG. 10 is a diagram showing an example of the hardware configuration of the device.
  • the device may be configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like.
  • the word “device” can be read as a circuit, device, unit, etc.
  • the hardware configuration of the device may be configured to include one or more of each of the devices shown in the figure, or may be configured not to include some of the devices.
  • Each functional block of the device (see FIG. 4) is realized by any hardware element of the computer device or a combination of the hardware elements.
  • each function in the device is such that the processor 1001 performs an operation by loading predetermined software (program) on the hardware such as the processor 1001 and the memory 1002, and controls the communication by the communication device 1004, or the memory. It is realized by controlling at least one of reading and writing of data in 1002 and storage 1003.
  • predetermined software program
  • Processor 1001 operates, for example, an operating system to control the entire computer.
  • the processor 1001 may be configured by a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic unit, a register, and the like.
  • CPU central processing unit
  • the processor 1001 reads a program (program code), a software module, data, etc. from at least one of the storage 1003 and the communication device 1004 into the memory 1002, and executes various processes according to these.
  • a program program code
  • a program that causes a computer to execute at least a part of the operations described in the above-described embodiment is used.
  • the various processes described above may be executed by one processor 1001 or may be executed simultaneously or sequentially by two or more processors 1001.
  • Processor 1001 may be implemented by one or more chips.
  • the program may be transmitted from the network via a telecommunication line.
  • the memory 1002 is a computer-readable recording medium, and is composed of at least one such as ReadOnlyMemory (ROM), ErasableProgrammableROM (EPROM), Electrically ErasableProgrammableROM (EEPROM), and RandomAccessMemory (RAM). May be done.
  • the memory 1002 may be referred to as a register, a cache, a main memory (main storage device), or the like.
  • the memory 1002 can store a program (program code), a software module, or the like that can execute the method according to the embodiment of the present disclosure.
  • the storage 1003 is a computer-readable recording medium, for example, an optical disk such as Compact Disc ROM (CD-ROM), a hard disk drive, a flexible disk, an optical magnetic disk (for example, a compact disk, a digital versatile disk, or a Blu-ray). It may consist of at least one (registered trademark) disk), smart card, flash memory (eg, card, stick, key drive), floppy (registered trademark) disk, magnetic strip, and the like.
  • Storage 1003 may be referred to as auxiliary storage.
  • the recording medium described above may be, for example, a database, server or other suitable medium containing at least one of memory 1002 and storage 1003.
  • the communication device 1004 is hardware (transmission / reception device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as, for example, a network device, a network controller, a network card, a communication module, or the like.
  • the communication device 1004 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 composed of.
  • FDD frequency division duplex
  • TDD time division duplex
  • 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 lamp, etc.) that outputs to the outside.
  • the input device 1005 and the output device 1006 may have an integrated configuration (for example, a touch panel).
  • Bus 1007 may be configured using a single bus or may be configured using different buses for each device.
  • the device includes hardware such as a microprocessor, a digital signal processor (Digital Signal Processor: DSP), an ApplicationSpecific Integrated Circuit (ASIC), a ProgrammableLogicDevice (PLD), and a FieldProgrammableGateArray (FPGA).
  • the hardware may implement some or all of each functional block.
  • processor 1001 may be implemented using at least one of these hardware.
  • information notification includes physical layer signaling (eg Downlink Control Information (DCI), Uplink Control Information (UCI), higher layer signaling (eg RRC signaling, Medium Access Control (MAC) signaling, broadcast information (Master Information Block)). (MIB), System Information Block (SIB)), other signals or combinations thereof.
  • DCI Downlink Control Information
  • UCI Uplink Control Information
  • RRC signaling eg RRC signaling, Medium Access Control (MAC) signaling, broadcast information (Master Information Block)).
  • MIB System Information Block
  • SIB System Information Block
  • RRC signaling may also be referred to as an RRC message, eg, RRC Connection Setup. ) Message, RRC Connection Reconfiguration message, etc. may be used.
  • LTE LongTermEvolution
  • LTE-A LTE-Advanced
  • SUPER3G IMT-Advanced
  • 4G 4th generation mobile communication system
  • 5G 5th generation mobile communication system
  • FutureRadioAccess FAA
  • NewRadio NR
  • W-CDMA registered trademark
  • GSM registered trademark
  • CDMA2000 Code Division Multiple Access 2000
  • UMB UltraMobileBroadband
  • IEEE802.11 Wi-Fi (registered trademark)
  • IEEE802.16 WiMAX®
  • IEEE802.20 Ultra-WideBand
  • Bluetooth® Ultra-WideBand
  • other systems that utilize appropriate systems and at least one of the next-generation systems extended based on them. It may be applied to one.
  • a plurality of systems may be applied in combination (for example, a combination of at least one of LTE and LTE-A and 5G).
  • the specific operation performed by the base station in this disclosure may be performed by its upper node (upper node).
  • various operations performed for communication with the terminal are the base station and other network nodes other than the base station (eg, MME or). It is clear that it can be done by at least one of (but not limited to, S-GW, etc.).
  • S-GW network node
  • the case where there is one network node other than the base station is illustrated above, it may be a combination of a plurality of other network nodes (for example, MME and S-GW).
  • Information and signals can be output from the upper layer (or lower layer) to the lower layer (or upper layer).
  • Input / output may be performed via a plurality of network nodes.
  • the input / output information may be stored in a specific location (for example, memory) or may be managed using a management table.
  • the input / output information may be overwritten, updated, or added.
  • the output information may be deleted.
  • the entered information may be transmitted to other devices.
  • the determination may be made by a value represented by one bit (0 or 1), by a true / false value (Boolean: true or false), or by comparing numerical values (for example, a predetermined value). It may be done by comparison with the value).
  • the notification of predetermined information (for example, the notification of "being X") is not limited to the explicit one, but is performed implicitly (for example, the notification of the predetermined information is not performed). May be good.
  • Software whether referred to as software, firmware, middleware, microcode, hardware description language, or other names, is an instruction, instruction set, code, code segment, program code, program, subprogram, software module.
  • Applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, procedures, features, etc. should be broadly interpreted.
  • software, instructions, information, etc. may be transmitted and received via a transmission medium.
  • a transmission medium For example, a website, where the software uses at least one of wired technology (coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), etc.) and wireless technology (infrared, microwave, etc.).
  • wired technology coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL), etc.
  • wireless technology infrared, microwave, etc.
  • the information, signals, etc. described in this disclosure may be represented using any of a variety of different techniques.
  • data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description are voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any of these. It may be represented by a combination of.
  • a channel and a symbol may be a signal (signaling).
  • the signal may be a message.
  • the component carrier (CC) may be referred to as a carrier frequency, a cell, a frequency carrier, or the like.
  • system and “network” used in this disclosure are used interchangeably.
  • the information, parameters, etc. described in the present disclosure may be expressed using absolute values, relative values from predetermined values, or using other corresponding information. It may be represented.
  • the radio resource may be one indicated by an index.
  • Base Station BS
  • Wireless Base Station Wireless Base Station
  • NodeB NodeB
  • eNodeB eNodeB
  • gNodeB gNodeB
  • Base stations are sometimes referred to by terms such as macrocells, small cells, femtocells, and picocells.
  • a base station can accommodate one or more (eg, three) cells (also called sectors). When a base station accommodates multiple cells, the entire coverage area of the base station can be divided into multiple smaller areas, each smaller area being a base station subsystem (eg, a remote radio for indoor use). Communication services can also be provided by Head: RRH).
  • RRH Remote Radio Head
  • cell refers to a base station that provides communication services in this coverage, and part or all of the coverage area of at least one of the base station subsystems.
  • MS Mobile Station
  • UE user equipment
  • terminal terminal
  • Mobile stations can be used by those skilled in the art as subscriber stations, mobile units, subscriber units, wireless units, remote units, mobile devices, wireless devices, wireless communication devices, remote devices, mobile subscriber stations, access terminals, mobile terminals, wireless. It may also be referred to as a terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable term.
  • At least one of the base station and the mobile station may be called a transmitting device, a receiving device, a communication device, or the like.
  • At least one of the base station and the mobile station may be a device mounted on the mobile body, a mobile body itself, or the like.
  • the moving body may be a vehicle (eg, car, airplane, etc.), an unmanned moving body (eg, drone, self-driving car, etc.), or a robot (manned or unmanned). ) May be.
  • at least one of the base station and the mobile station includes a device that does not necessarily move during communication operation.
  • at least one of a base station and a mobile station may be an Internet of Things (IoT) device such as a sensor.
  • IoT Internet of Things
  • the base station in the present disclosure may be read as a mobile station (user terminal, the same shall apply hereinafter).
  • communication between a base station and a mobile station has been replaced with communication between a plurality of mobile stations (for example, it may be called Device-to-Device (D2D), Vehicle-to-Everything (V2X), etc.).
  • D2D Device-to-Device
  • V2X Vehicle-to-Everything
  • Each aspect / embodiment of the present disclosure may be applied to the configuration.
  • the mobile station may have the functions of the base station.
  • the words such as "up” and “down” may be read as words corresponding to the communication between terminals (for example, "side”).
  • the upstream channel, the downstream channel, and the like may be read as a side channel.
  • the mobile station in the present disclosure may be read as a base station.
  • the base station may have the functions of the mobile station.
  • the radio frame may be composed of one or more frames in the time domain. Each one or more frames in the time domain may be referred to as a subframe. Subframes may further be composed of one or more slots in the time domain.
  • the subframe may have a fixed time length (eg, 1 ms) that does not depend on numerology.
  • the numerology may be a communication parameter that applies to at least one of the transmission and reception of a signal or channel.
  • Numerology includes, for example, SubCarrier Spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (Transmission Time Interval: TTI), number of symbols per TTI, wireless frame configuration, transmission / reception. It may indicate at least one of a specific filtering process performed by the machine in the frequency domain, a specific windowing process performed by the transmitter / receiver in the time domain, and the like.
  • the slot may be composed of one or more symbols (Orthogonal Frequency Division Multiplexing (OFDM) symbol, Single Carrier Frequency Division Multiple Access (SC-FDMA) symbol, etc.) in the time domain.
  • the slot may be a unit of time based on numerology.
  • the slot may include a plurality of mini slots. Each minislot may be composed of one or more symbols in the time domain. Further, the mini slot may be referred to as a sub slot. The minislot may consist of a smaller number of symbols than the slot.
  • PDSCH (or PUSCH) transmitted in time units larger than the minislot may be referred to as PDSCH (or PUSCH) mapping type A.
  • the PDSCH (or PUSCH) transmitted using the minislot may be referred to as PDSCH (or PUSCH) mapping type B.
  • the wireless frame, subframe, slot, minislot and symbol all represent the time unit when transmitting a signal.
  • the radio frame, subframe, slot, minislot and symbol may use different names corresponding to each.
  • one subframe may be referred to as a transmission time interval (TTI)
  • TTI transmission time interval
  • TTI transmission time interval
  • TTI transmission time interval
  • TTI transmission time interval
  • TTI transmission time interval
  • TTI slot or one minislot
  • at least one of the subframe and TTI may be a subframe (1ms) in existing LTE, a period shorter than 1ms (eg, 1-13 symbols), or a period longer than 1ms. May be.
  • the unit representing TTI may be called a slot, a mini slot, or the like instead of a subframe.
  • TTI refers to, for example, the minimum time unit of scheduling in wireless communication.
  • a base station schedules each user terminal to allocate radio resources (frequency bandwidth that can be used in each user terminal, transmission power, etc.) in TTI units.
  • the definition of TTI is not limited to this.
  • TTI may be a transmission time unit such as a channel-encoded data packet (transport block), a code block, or a code word, or may be a processing unit such as scheduling or link adaptation.
  • the time interval for example, the number of symbols
  • the transport block, code block, code word, etc. may be shorter than the TTI.
  • one or more TTIs may be the minimum time unit for scheduling. Further, the number of slots (number of mini-slots) constituting the minimum time unit of the scheduling may be controlled.
  • TTI with a time length of 1 ms may be called normal TTI (TTI in LTE Rel.8-12), normal TTI, long TTI, normal subframe, normal subframe, long subframe, slot, etc.
  • a TTI shorter than a normal TTI may be referred to as a shortened TTI, a short TTI, a partial TTI (partial or fractional TTI), a shortened subframe, a short subframe, a minislot, a subslot, a slot, and the like.
  • the long TTI (for example, normal TTI, subframe, etc.) may be read as a TTI having a time length of more than 1 ms
  • the short TTI (for example, shortened TTI, etc.) may be read as a TTI less than the TTI length of the long TTI and 1 ms. It may be read as a TTI having the above TTI length.
  • the resource block (RB) is a resource allocation unit in the time domain and the frequency domain, and may include one or a plurality of continuous subcarriers in the frequency domain.
  • the number of subcarriers contained in RB may be the same regardless of numerology, and may be, for example, 12.
  • the number of subcarriers contained in the RB may be determined based on numerology.
  • the time domain of RB may include one or more symbols, and may have a length of 1 slot, 1 mini slot, 1 subframe, or 1 TTI.
  • Each 1TTI, 1 subframe, etc. may be composed of one or a plurality of resource blocks.
  • One or more RBs are physical resource blocks (Physical RB: PRB), sub-carrier groups (Sub-Carrier Group: SCG), resource element groups (Resource Element Group: REG), PRB pairs, RB pairs, etc. May be called.
  • Physical RB Physical RB: PRB
  • sub-carrier groups Sub-Carrier Group: SCG
  • resource element groups Resource Element Group: REG
  • PRB pairs RB pairs, etc. May be called.
  • the resource block may be composed of one or a plurality of resource elements (ResourceElement: RE).
  • RE resource elements
  • 1RE may be a radio resource area of 1 subcarrier and 1 symbol.
  • Bandwidth Part (which may also be called partial bandwidth, etc.) may represent a subset of consecutive common resource blocks (RBs) for a neurology in a carrier. good.
  • the common RB may be specified by the index of the RB with respect to the common reference point of the carrier.
  • PRBs may be defined in a BWP and numbered within that BWP.
  • BWP may include BWP for UL (UL BWP) and BWP for DL (DL BWP).
  • BWP for UL
  • DL BWP BWP for DL
  • One or more BWPs may be set in one carrier for the UE.
  • At least one of the configured BWPs may be active, and the UE may not expect to send or receive a given signal / channel outside the active BWP.
  • “cell”, “carrier” and the like in this disclosure may be read as “BWP”.
  • the above-mentioned structures such as wireless frames, subframes, slots, mini-slots and symbols are merely examples.
  • the number of subframes contained in a radio frame the number of slots per subframe or radioframe, the number of minislots contained within a slot, the number of symbols and RBs contained in a slot or minislot, included in RB.
  • the number of subcarriers, as well as the number of symbols in the TTI, the symbol length, the cyclic prefix (CP) length, and other configurations can be changed in various ways.
  • connection means any direct or indirect connection or connection between two or more elements and each other. It can include the presence of one or more intermediate elements between two “connected” or “joined” elements.
  • the connection or connection between the elements may be physical, logical, or a combination thereof.
  • connection may be read as "access”.
  • the two elements use at least one of one or more wires, cables and printed electrical connections, and, as some non-limiting and non-comprehensive examples, the radio frequency domain. Can be considered to be “connected” or “coupled” to each other using electromagnetic energy having wavelengths in the microwave and light (both visible and invisible) regions.
  • the reference signal can also be abbreviated as Reference Signal (RS), and may be called a pilot (Pilot) depending on the applied standard.
  • RS Reference Signal
  • Pilot pilot
  • each of the above devices may be replaced with a "part”, a “circuit”, a “device”, or the like.
  • references to elements using designations such as “first” and “second” as used in this disclosure does not generally limit the quantity or order of those elements. These designations can be used in the present disclosure as a convenient way to distinguish between two or more elements. Therefore, references to the first and second elements do not mean that only two elements can be adopted there, or that the first element must somehow precede the second element.
  • determining and “determining” used in this disclosure may include a wide variety of actions.
  • “Judgment” and “decision” are, for example, judgment (judging), calculation (calculating), calculation (computing), processing (processing), derivation (deriving), investigation (investigating), search (looking up, search, inquiry). It may include (eg, searching in a table, database or another data structure), ascertaining as “judgment” or “decision”.
  • judgment and “decision” are receiving (for example, receiving information), transmitting (for example, transmitting information), input (input), output (output), and access. It may include (for example, accessing data in memory) to be regarded as “judgment” or “decision”.
  • judgment and “decision” are considered to be “judgment” and “decision” when the things such as solving, selecting, choosing, establishing, and comparing are regarded as “judgment” and “decision”. Can include. That is, “judgment” and “decision” may include considering some action as “judgment” and “decision”. Further, “judgment (decision)” may be read as “assuming", “expecting”, “considering” and the like.
  • the term "A and B are different” may mean “A and B are different from each other”.
  • the term may mean that "A and B are different from C”.
  • Terms such as “separate” and “combined” may be interpreted in the same way as “different”.
  • Radio communication system 20 NG-RAN 100 gNB 100A, 100B, 100C Wireless communication node 200 UE 210 Radio signal transmission / reception unit 220 Amplifier unit 230 Modulation / demodulation unit 240 Control signal / reference signal processing unit 250 Coding / decoding unit 260 Data transmission / reception unit 270 Control unit BM beam 1001 Processor 1002 Memory 1003 Storage 1004 Communication device 1005 Input device 1006 Output device 1007 bus

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

Abstract

La présente invention concerne un terminal (200) qui reçoit des informations de commande de liaison descendante et configure la liaison descendante sur la base des informations de commande de liaison descendante. Si un deuxième intervalle de sous-porteuse qui est plus large qu'un premier intervalle de sous-porteuse est utilisé, le terminal (200) suppose que le créneau utilisé par une indication dans les informations de commande de liaison descendante est décalé à plus tard que le créneau contenant les informations de commande de liaison descendante.
PCT/JP2020/030273 2020-08-06 2020-08-06 Terminal WO2022029980A1 (fr)

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019159238A1 (fr) * 2018-02-13 2019-08-22 株式会社Ｎｔｔドコモ Terminal utilisateur et procédé de communication sans fil

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019159238A1 (fr) * 2018-02-13 2019-08-22 株式会社Ｎｔｔドコモ Terminal utilisateur et procédé de communication sans fil

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NOKIA, NOKIA SHANGHAI BELL: "Required changes to NR using existing DL/UL NR waveform", 3GPP DRAFT; R1-2003811, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. e-Meeting; 20200525 - 20200605, 15 May 2020 (2020-05-15), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051885582 *

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