WO2024171462A1 - 端末、通信方法及び無線通信システム - Google Patents

端末、通信方法及び無線通信システム Download PDF

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Publication number
WO2024171462A1
WO2024171462A1 PCT/JP2023/005836 JP2023005836W WO2024171462A1 WO 2024171462 A1 WO2024171462 A1 WO 2024171462A1 JP 2023005836 W JP2023005836 W JP 2023005836W WO 2024171462 A1 WO2024171462 A1 WO 2024171462A1
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WIPO (PCT)
Prior art keywords
resource
terminal
reference signal
base station
hopping
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PCT/JP2023/005836
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English (en)
French (fr)
Japanese (ja)
Inventor
康介 島
大樹 武田
真哉 岡村
浩樹 原田
春陽 越後
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NTT Docomo Inc
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NTT Docomo Inc
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Priority to PCT/JP2023/005836 priority Critical patent/WO2024171462A1/ja
Priority to JP2025500610A priority patent/JPWO2024171462A1/ja
Publication of WO2024171462A1 publication Critical patent/WO2024171462A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA

Definitions

  • the present invention relates to a terminal, a communication method, and a wireless communication system.
  • 3GPP registered trademark
  • 3rd Generation Partnership Project 3rd Generation Partnership Project
  • 5G Fifth Generation Partnership Project
  • NR New Radio
  • RedCap Reduced Capability
  • UE User Equipment
  • frequency hopping to the reference signal used for positioning, so that it can be treated as a single signal with a large bandwidth and positioning can be performed.
  • phase shifts between hopping resources can degrade positioning accuracy.
  • overlapping techniques are being considered, in which some of the frequencies of each hopping resource are overlapped with each other.
  • the terminal in this embodiment includes a control unit that assumes mapping of resources corresponding to a reference signal used for positioning to which frequency hopping is applied, and a receiving unit that receives the reference signal based on the assumed mapping of resources.
  • a first resource and a second resource corresponding to the reference signal partially overlap in the frequency domain.
  • the control unit assumes a resource to be mapped to the second resource based on the size of overlap between the first resource and the second resource or a reference resource and an offset from the reference resource.
  • the disclosed technology makes it possible to appropriately map resources of reference signals used for positioning that employs frequency hopping with overlapping resources.
  • FIG. 1 is a diagram illustrating a wireless communication system.
  • FIG. 1 is a diagram illustrating an example of position measurement.
  • FIG. 1 is a diagram illustrating an example of frequency hopping.
  • FIG. 11 is a diagram illustrating an example of a mapping method of overlapping frequency hopping resources in the second embodiment.
  • FIG. 13 is a diagram illustrating an example of a configuration of parameters related to overlap size in the second embodiment.
  • FIG. 13 is a diagram illustrating an example of a configuration of parameters related to overlap size in the second embodiment.
  • FIG. 13 is a diagram illustrating an example of a mapping method of overlapping frequency hopping resources in the third embodiment.
  • FIG. 13 is a diagram illustrating an example of a mapping method of overlapping frequency hopping resources in the third embodiment.
  • FIG. 13 is a diagram illustrating an example of a parameter configuration related to an offset value in the third embodiment.
  • FIG. 13 is a diagram illustrating an example of a parameter configuration related to an offset value in the third embodiment.
  • FIG. 13 is a diagram illustrating an example of a parameter configuration related to an offset value in the third embodiment.
  • FIG. 13 is a diagram illustrating an example of a parameter configuration related to an offset value in the third embodiment.
  • FIG. 13 is a diagram illustrating an example of a mapping method of overlapping frequency hopping resources in a modified example of the third embodiment.
  • FIG. 13 is a diagram illustrating an example of a mapping method of overlapping frequency hopping resources in the fourth embodiment.
  • FIG. 13 is a diagram illustrating an example of a mapping method of overlapping frequency hopping resources in the fourth embodiment.
  • FIG. 13 is a diagram illustrating an example of a configuration of parameters related to an offset value in the fourth embodiment.
  • FIG. 13 is a diagram illustrating an example of a configuration of parameters related to an offset value in the fourth embodiment.
  • FIG. 13 is a diagram illustrating an example of a configuration of parameters related to an offset value in the fourth embodiment.
  • FIG. 2 is a diagram illustrating an example of a functional configuration of a base station in the present embodiment.
  • FIG. 2 is a diagram illustrating an example of a functional configuration of a terminal according to the present embodiment.
  • FIG. 2 is a diagram illustrating an example of a hardware configuration of a base station or a terminal in the present embodiment.
  • FIG. 1 is a diagram illustrating an example of a configuration of a vehicle according to an embodiment of the present invention.
  • LTE Long Term Evolution
  • NR Universal Terrestrial Radio Access
  • LAN Local Area Network
  • the duplex method may be a TDD (Time Division Duplex) method, an FDD (Frequency Division Duplex) method, or another method (e.g., Flexible Duplex, etc.).
  • TDD Time Division Duplex
  • FDD Frequency Division Duplex
  • another method e.g., Flexible Duplex, etc.
  • "configuring" wireless parameters and the like may mean that predetermined values are pre-configured, or that wireless parameters notified from the base station 10 or the terminal 20 are configured.
  • FIG. 1 is a diagram for explaining a wireless communication system.
  • the wireless communication system includes a base station 10 and a terminal 20.
  • FIG. 1 shows one base station 10 and one terminal 20, this is an example, and there may be multiple of each.
  • the base station 10 is a communication device that provides one or more cells and performs wireless communication with the terminal 20.
  • the physical resources of the wireless signal are defined in the time domain and the frequency domain, and the time domain may be defined by the number of OFDM (Orthogonal Frequency Division Multiplexing) symbols, and the frequency domain may be defined by the number of subcarriers or the number of resource blocks.
  • the TTI Transmission Time Interval
  • the time domain may be a slot, or the TTI may be a subframe.
  • the base station 10 transmits a synchronization signal and system information to the terminal 20.
  • the synchronization signal is, for example, NR-PSS and NR-SSS.
  • the system information is, for example, transmitted by NR-PBCH and is also called broadcast information.
  • the synchronization signal and system information may be called SSB (SS/PBCH block).
  • the base station 10 transmits a control signal or data to the terminal 20 in DL (Downlink) and receives a control signal or data from the terminal 20 in UL (Uplink). Both the base station 10 and the terminal 20 are capable of transmitting and receiving signals by performing beamforming.
  • both the base station 10 and the terminal 20 are capable of applying communication by MIMO (Multiple Input Multiple Output) to DL or UL.
  • both the base station 10 and the terminal 20 may communicate via a secondary cell (SCell: Secondary Cell) and a primary cell (PCell: Primary Cell) by CA (Carrier Aggregation).
  • SCell Secondary Cell
  • PCell Primary Cell
  • CA Carrier Aggregation
  • the terminal 20 may communicate via a primary cell of the base station 10 and a primary secondary cell group cell (PSCell: Primary SCG Cell) of another base station 10 using DC (Dual Connectivity).
  • DC Direct Connectivity
  • the terminal 20 is a communication device equipped with a wireless communication function, such as a smartphone, a mobile phone, a tablet, a wearable terminal, or a communication module for M2M (Machine-to-Machine). As shown in FIG. 1, the terminal 20 receives control signals or data from the base station 10 in DL and transmits control signals or data to the base station 10 in UL, thereby utilizing various communication services provided by the wireless communication system. The terminal 20 also receives various reference signals transmitted from the base station 10, and performs measurement of propagation path quality based on the reception results of the reference signals.
  • the terminal 20 may be referred to as a UE, and the base station 10 as a gNB.
  • LTE and NR support a carrier aggregation function that uses wideband to secure data resources.
  • the carrier aggregation function it is possible to secure wideband data resources by bundling multiple component carriers. For example, it is possible to use a 100 MHz width by bundling multiple 20 MHz bandwidths.
  • RedCap terminal a new device type (hereinafter also referred to as "RedCap terminal") that has lower cost and complexity than eMBB (enhanced Mobile Broadband) devices or URLLC (Ultra-Reliable and Low Latency Communications) devices is being considered as a Reduced Capability NR device.
  • eMBB enhanced Mobile Broadband
  • URLLC Ultra-Reliable and Low Latency Communications
  • a RedCap terminal may support a smaller maximum bandwidth.
  • FR1 Frequency Range 1
  • a RedCap terminal may have a maximum bandwidth of 20 MHz during initial access and thereafter.
  • FR2 Frequency Range 2
  • a RedCap terminal may have a maximum bandwidth of 100 MHz during initial access and thereafter.
  • a RedCap terminal may support a small number of receive branches.
  • a RedCap terminal may support one or two receive branches.
  • a RedCap terminal may support a small maximum number of MIMO layers.
  • a RedCap terminal may support one or two MIMO layers.
  • a RedCap terminal may support a small modulation order. For example, support for 256QAM (Quadrature amplitude modulation) may be optional in FR1 for a RedCap terminal.
  • RedCap terminals are being considered to support HD-FDD (Half-Duplex Frequency Division Duplex) to reduce complexity.
  • HD-FDD High-Duplex Frequency Division Duplex
  • DL and UL carriers are placed at different frequencies and can transmit and receive simultaneously.
  • half-duplex FDD DL and UL carriers are placed at different frequencies and cannot transmit and receive simultaneously, requiring switching time between DL and UL.
  • HD-FDD can eliminate the duplexer, using a switch and additional filters instead.
  • the location of the terminal 20 by the LMF (Location Management Function) in the Uu interface of 3GPP Release 16 or 17 is performed by the methods 1) to 3) shown below (see Non-Patent Documents 2, 3, and 4).
  • Figure 2 is a diagram showing an example of positioning.
  • the location information of the UE may be calculated based on the DL-TDOA.
  • the location of the UE may be estimated based on the DL-RSTD (Received Signal Time Difference) measured by the UE of DL radio signals transmitted from the TRPs of multiple NRs.
  • the estimation may use the geographical location of the TRP and the DL transmission timing at the TRP.
  • the location of the UE may be estimated based on the RSRP (Reference Signal Received Power) of the DL-PRS (Positioning Reference Signal).
  • RSRP Reference Signal Received Power
  • the UE's location may be calculated in the following steps. 1) The gNB transmits DL-PRS from each TRP to the UE. 2) The UE reports the measurement result DL-RSTD to the GW and/or gNB and/or LMF via LPP (LTE Positioning Protocol). 3) The gNB reports timing information related to the TRP to the LMF via NRPPa (NR Positioning Protocol A). 4) Based on the above information reported from the UE and gNB, the LMF calculates the UE position.
  • LPP LTE Positioning Protocol
  • NRPPa NR Positioning Protocol A
  • the delay between the UE and TRP0, the delay between the UE and TRP1, and the delay between the UE and TRP2 may be measured, and the UE's location may be calculated based on the geographical location and DL transmission timing of each TRP.
  • the maximum bandwidth supported by RedCap terminals under consideration in 3GPP Release 17 is 20 MHz in FR1 (Frequency Range 1) and 100 MHz in FR2 (Frequency Range 2).
  • PRS/SRS frequency hopping as shown in Figure 3, all frequency-hopped bandwidths are regarded as one large bandwidth signal, and positioning is performed by virtually expanding the bandwidth.
  • phase shift between frequency-hopped resources (hopping resources) degrades positioning accuracy, overlapping is being considered in which the frequencies of each hopping resource are partially overlapped with each other to compensate for the degradation of positioning accuracy, as shown in Figure 3.
  • a method for mapping resources of a reference signal used for positioning to which frequency hopping with resource overlap is applied may be specified in a specification.
  • the specification is, for example, a 3GPP specification (e.g., Technical Specification or Technical Report), and the terminal 20 operates in accordance with the specification.
  • the terminal 20 assumes a resource mapping method specified in the specification and performs operations based on that assumption.
  • This embodiment is not limited to positioning of RedCap terminals, but may be applied to normal non-RedCap terminals, or to general NR terminal positioning (UE NR positioning).
  • the reference signals for positioning are primarily assumed to be PRS and SRS, but other reference signals and other channels may also be used.
  • this embodiment will be described with a focus on the PRS, which is a downlink signal. However, this embodiment may also be applied to the uplink SRS with modifications from the parameters for the PRS.
  • the hopping resource in this embodiment is a PRB (Physical Resource Block) resource that is frequency hopped.
  • PRB Physical Resource Block
  • the terminal 20 may assume that the receiving frequency is set by the network in consideration of the overlap of hopping resources.
  • the terminal 20 requests at least one of the overlap setting and the overlapped frequency width from the terminal 20 to the network.
  • the frequency width in which multiple hopping resources overlap each other may be referred to as the overlap size.
  • the terminal 20 may assume that the overlapped frequency width is set by X [Hz/RBs/REs].
  • Overlap capabilities may be set in the terminal 20.
  • the overlap capabilities may include, for example, the following 1)-6).
  • the terminal 20 may assume resource mapping transmitted from the TRP. For example, the terminal 20 may assume Rx Hopping Only (a pattern in which resources common to non-RedCap terminals are mapped) as shown in FIG. 4 (left side). For example, the terminal 20 may assume Tx/Rx Hopping (a pattern in which only PRS transmitted by frequency hopping to RedCap terminals is mapped) as shown in FIG. 4 (right side).
  • the PRS resources can be appropriately mapped.
  • the mapping of the hopping resource received by the terminal 20 may be defined by the overlap size between the received hopping resource and the adjacent hopping resource.
  • FIG. 5 shows a first hopping resource starting from DL-PRS-StartPRB in the frequency direction and a second hopping resource adjacent to the first hopping resource in the time domain with a predetermined time gap.
  • the terminal 20 may assume the resource to which the second hopping resource is mapped based on the resource (e.g., RB or RE) to which the first hopping resource is mapped and the overlap size between the first hopping resource and the second hopping resource.
  • the resource e.g., RB or RE
  • the terminal 20 may overlap the hopping resource of the PRS with a resource of an overlap size set by the network, and may assume an RE from which reception of the hopping resource of the subsequent PRS begins in the time domain.
  • the terminal 20 may assume that the overlap size for multiple hopping resources is set by one parameter as a common value on a resource set basis.
  • the terminal 20 may assume that the overlap size for each of the multiple hopping resources is set by multiple parameters as individual values.
  • the parameter regarding the overlap size may be set in the NR-DL-PRS-PositioningFrequencyLayer as a parameter regarding resource mapping, for example, as shown in FIG. 6.
  • dl-PRS-OverlapSize-r18 is a parameter indicating the overlap size.
  • the parameter regarding the overlap size may be set in the newly defined NR-DL-PRS-PositioningFrequencyLayer-r18.
  • a dedicated IE (Information Element) is defined as a parameter related to frequency hopping, and the parameter related to overlap size may be set as an element of the defined IE.
  • the mapping of hopping resources received by the terminal 20 may be defined based on an offset amount from the Start PRB, which is a reference resource.
  • FIG. 8 shows a first hopping resource starting from DL-PRS-StartPRB in the frequency direction and a second hopping resource adjacent to the first hopping resource in the time domain with a predetermined time gap.
  • the terminal 20 may assume an RE that is the starting position for receiving the second hopping resource based on an offset value (also called an offset or offset amount) from DL-PRS-StartPRB, which is a reference resource set by the network.
  • the offset value may be set so that each of the hopping resources overlaps in the frequency direction with a predetermined overlap size.
  • the terminal 20 may assume that offset values for multiple hopping resources are set by one parameter as a common step value for each resource set, and the offset value is incremented.
  • the RE that is the start position of the third hopping resource following the second hopping resource may be determined based on the incremented offset value.
  • the offset of the bottom of the PRS resource set (start position in the frequency direction) and DL-PRS-PointA may be specified by DL-PRS-StartPRB.
  • the RE that is the starting position of the third hopping resource following the second hopping resource may be determined based on the starting position of the second hopping resource and an offset value.
  • the terminal 20 may assume that the overlap size for each of the multiple hopping resources is set by multiple parameters as individual values.
  • the terminal 20 may implicitly assume that the Yth (Y ⁇ 1) PRS resource (hopping resource) included in each PRS resource set is the reference resource.
  • the index of the PRS resource to be the reference resource may be specified in the specification.
  • the terminal 20 may assume that the reference resource is explicitly specified by the network.
  • the parameters related to the offset value may be set in the NR-DL-PRS-PositioningFrequencyLayer as parameters related to resource mapping, as shown in Figures 10 and 11.
  • the dl-PRS-StartPRBOffsetStep-r18 in Figure 10 specifies a step value in which the offset value for a plurality of hopping resources is common in units of resource sets, as described in Figure 8, for example.
  • the dl-PRS-StartPRBOffset-r18 in Figure 11 specifies an offset value set for each of a plurality of hopping resources, as described in Figure 9, for example.
  • the parameters related to the offset value may be set in the newly defined NR-DL-PRS-PositioningFrequencyLayer-r18.
  • a dedicated IE may be defined as a parameter related to frequency hopping, and the parameter related to the offset value may be set as an element of the defined IE.
  • the overlapped hopping resources can be mapped based on the StartPRB.
  • the parameter "dl-PRS-StartPRB" in 3GPP TS 37.355 NR-DL-PRS-AssistanceData is defined as "This field specifies the start PRB index defined as offset with respect to reference DL-PRS Point A for the Positioning Frequency Layer. All DL-PRS Resources Sets belonging to the same Positioning Frequency Layer have the same value of dl-PRS-StartPRB.” In a variation of the third embodiment, "All DL-PRS Resources Sets belonging to the same Positioning Frequency Layer have the same value of dl-PRS-StartPRB" may be deleted from the above definition.
  • the mapping of hopping resources received by the terminal 20 may be defined based on an offset value from Point A.
  • Point A is an example of a reference resource.
  • the terminal 20 may assume an RE that is the starting position for receiving the second hopping resource based on an offset value from Point A (DL-PRS-Point A) set by the network.
  • the offset value may be set so that each of the hopping resources overlaps in the frequency direction with a predetermined overlap size.
  • the terminal 20 may assume that an offset value and a common step value between Point A and the hopping resource are set for each resource set, and that the offset value is incremented.
  • the reference for the offset between PointA and the hopping resource in the frequency direction may be the first PRS resource.
  • the initial offset is equal to DL-PRS-StartPRB.
  • the reference of the offset between Point A and the hopping resource in the frequency direction may be the PRB resource where frequency hopping starts.
  • the PRB resource where frequency hopping starts is the PRB resource that follows the PRB resource starting from DL-PRS-StartPRB in the time domain.
  • the terminal 20 may assume that the offset value from Point A for each of a plurality of hopping resources is set as an individual value by a plurality of parameters.
  • the parameters related to the offset value may be set in the NR-DL-PRS-PositioningFreqnccyLayer as parameters related to resource mapping, as shown in Figures 17 and 18.
  • dl-PRS-InitialOffset-r18 and dl-PRS-OffsetStep-r18 in Figure 17 specify the initial offset value and step value used in the above options 1, 1.1, and 1.2, respectively.
  • dl-PRS-FreqHoppingOffset-r18 in Figure 18 specifies the offset value used in the above option 2.
  • the parameters related to the offset value may be set in the newly defined NR-DL-PRS-PositioningFreqnccyLayer-r18.
  • a dedicated IE may be defined as a parameter related to frequency hopping, and the parameter related to the offset value may be set as an element of the defined IE.
  • the overlapped hopping resources can be mapped based on Point A, which is a predetermined reference resource.
  • PRS Positioning Reference Signal
  • DL-PRS Downlink Physical Signal
  • UL-PRS Uplink Physical Signal
  • SRS Positioning Reference Signal
  • SRS may be interpreted as “SRS for MIMO,” “SRS for positioning,” etc.
  • PFL may be read as "CC” etc.
  • network may be interpreted as “gNB,” “TRP,” “LMF,” etc.
  • set by the network or “instructed by the network” may be interpreted as “set by RRC signaling,” “activate/deactivate/update by MAC-CE,” “indicate by DCI,” etc.
  • Frequency, band or resource overlapping may be interpreted as "stitching,” “concatenation,” etc.
  • the terminal 20 when frequency hopping with resource overlap is applied to a reference signal used for positioning, the terminal 20 can properly receive the reference signal based on the resource mapping of the reference signal.
  • the terminal includes a control unit that assumes mapping of resources corresponding to a reference signal used for frequency hopping-applied positioning, and a receiving unit that receives the reference signal based on the assumed mapping of resources.
  • a first resource and a second resource corresponding to the reference signal partially overlap in the frequency domain.
  • the control unit assumes a resource to be mapped to the second resource based on an overlap size between the first resource and the second resource or a reference resource and an offset from the reference resource.
  • the reference resource is a resource corresponding to a starting position of the first resource in the frequency domain.
  • the reference resource is a predetermined reference resource notified by a base station.
  • the reference signal is a Positioning Reference Signal (PRS).
  • a communication method performed by a terminal includes the steps of: assuming a mapping of resources corresponding to a reference signal used for frequency hopping positioning; and receiving the reference signal based on the assumed mapping of resources, where a first resource and a second resource corresponding to the reference signal partially overlap in a frequency domain. The assuming step assumes a resource to be mapped to the second resource based on an overlap size between the first resource and the second resource or a reference resource and an offset from the reference resource.
  • a wireless communication system includes a terminal that assumes mapping of resources corresponding to a reference signal used for positioning to which frequency hopping is applied, and a base station that transmits the reference signal.
  • the terminal receives the reference signal based on the assumed mapping of resources.
  • a first resource and a second resource corresponding to the reference signal partially overlap in the frequency domain.
  • the terminal assumes a resource to be mapped to the second resource based on an overlap size between the first resource and the second resource or a reference resource and an offset from the reference resource.
  • the terminal when frequency hopping with resource overlap is applied to a reference signal used for positioning, the terminal can properly receive the reference signal based on the resource mapping of the reference signal.
  • the base station 10 and the terminal 20 include functions for implementing the above-mentioned embodiments. However, the base station 10 and the terminal 20 may each include only a part of the functions in the embodiments.
  • Fig. 20 is a diagram showing an example of the functional configuration of the base station 10. As shown in Fig. 20, the base station 10 has a transmitting unit 110, a receiving unit 120, a setting unit 130, and a control unit 140.
  • the functional configuration shown in Fig. 20 is merely an example. As long as the operation according to this embodiment can be executed, the names of the functional divisions and functional units may be any names.
  • the transmitting unit 110 has a function of generating a signal to be transmitted to the terminal 20 and transmitting the signal wirelessly.
  • the receiving unit 120 has a function of receiving various signals transmitted from the terminal 20 and acquiring, for example, information of a higher layer from the received signals.
  • the transmitting unit 110 also has a function of transmitting NR-PSS, NR-SSS, NR-PBCH, DL/UL control signals, DL reference signals, etc. to the terminal 20.
  • the setting unit 130 stores in a storage device the setting information that is set in advance and various setting information to be transmitted to the terminal 20, and reads it from the storage device as necessary.
  • the content of the setting information is, for example, information related to the setting of D2D communication.
  • the control unit 140 performs processing related to settings for the terminal 20 to perform D2D communication, as described in the embodiment.
  • the control unit 140 also transmits scheduling for D2D communication and DL communication to the terminal 20 via the transmission unit 110.
  • the control unit 140 also receives information related to HARQ responses for D2D communication and DL communication from the terminal 20 via the reception unit 120.
  • Functional units in the control unit 140 related to signal transmission may be included in the transmission unit 110, and functional units in the control unit 140 related to signal reception may be included in the reception unit 120.
  • Fig. 21 is a diagram showing an example of the functional configuration of the terminal 20.
  • the terminal 20 has a transmitting unit 210, a receiving unit 220, a setting unit 230, and a control unit 240.
  • the functional configuration shown in Fig. 21 is merely an example. As long as the operation according to this embodiment can be executed, the names of the functional divisions and functional units may be any names.
  • the above-mentioned LTE-SL transmission/reception mechanism (module) and the above-mentioned NR-SL transmission/reception mechanism (module) may each have a separate transmitting unit 210, receiving unit 220, setting unit 230, and control unit 240.
  • the transmitter 210 creates a transmission signal from the transmission data and transmits the transmission signal wirelessly.
  • the receiver 220 wirelessly receives various signals and acquires higher layer signals from the received physical layer signals.
  • the receiver 220 also has a function of receiving NR-PSS, NR-SSS, NR-PBCH, DL/UL/SL control signals or reference signals, etc. transmitted from the base station 10.
  • the transmitter 210 transmits PSCCH (Physical Sidelink Control Channel), PSSCH (Physical Sidelink Shared Channel), PSDCH (Physical Sidelink Discovery Channel), PSBCH (Physical Sidelink Broadcast Channel), etc. to another terminal 20 as D2D communication, and the receiver 220 receives PSCCH, PSSCH, PSDCH, PSBCH, etc. from the other terminal 20.
  • the setting unit 230 stores various setting information received from the base station 10 or the terminal 20 by the receiving unit 220 in a storage device, and reads it out from the storage device as necessary.
  • the setting unit 230 also stores setting information that is set in advance.
  • the content of the setting information is, for example, information related to the setting of D2D communication, etc.
  • the control unit 240 controls the D2D communication that establishes an RRC connection with another terminal 20.
  • the control unit 240 also performs processing related to power saving operation.
  • the control unit 240 also performs processing related to HARQ for D2D communication and DL communication.
  • the control unit 240 also transmits information related to HARQ responses for D2D communication and DL communication to another terminal 20 scheduled by the base station 10 to the base station 10.
  • the control unit 240 may also schedule D2D communication for the other terminal 20.
  • the control unit 240 may also autonomously select resources to be used for D2D communication from a resource selection window based on the sensing result, or may perform reevaluation or preemption.
  • the control unit 240 also performs processing related to power saving in transmission and reception of D2D communication.
  • the control unit 240 also performs processing related to inter-terminal coordination in D2D communication.
  • the functional units in the control unit 240 related to signal transmission may be included in the transmitting unit 210, and the functional units in the control unit 240 related to signal reception may be included in the receiving unit 220.
  • each functional block may be realized using one device that is physically or logically coupled, or may be realized using two or more devices that are physically or logically separated and directly or indirectly connected (for example, using wires, wirelessly, etc.) and these multiple devices.
  • the functional blocks may be realized by combining the one device or the multiple devices with software.
  • Functions include, but are not limited to, judgement, determination, judgment, calculation, computation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, resolution, selection, election, establishment, comparison, assumption, expectation, regard, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, and assignment.
  • a functional block (component) that performs the transmission function is called a transmitting unit or transmitter.
  • the base station 10, terminal 20, etc. in one embodiment of the present disclosure may function as a computer that performs processing of the wireless communication method of the present disclosure.
  • FIG. 22 is a diagram showing an example of the hardware configuration of the base station 10 and terminal 20 in one embodiment of the present disclosure.
  • the above-mentioned base station 10 and terminal 20 may be physically configured as a computer device including a processor 1001, a storage device 1002, an auxiliary storage device 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, etc.
  • the term "apparatus" can be interpreted as a circuit, device, unit, etc.
  • the hardware configuration of the base station 10 and the terminal 20 may be configured to include one or more of the devices shown in the figure, or may be configured to exclude some of the devices.
  • the functions of the base station 10 and the terminal 20 are realized by loading specific software (programs) onto hardware such as the processor 1001 and the storage device 1002, causing the processor 1001 to perform calculations, control communications by the communication device 1004, and control at least one of the reading and writing of data in the storage device 1002 and the auxiliary storage device 1003.
  • the processor 1001 for example, operates an operating system to control the entire computer.
  • the processor 1001 may be configured as a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic unit, registers, etc.
  • CPU central processing unit
  • control unit 140, control unit 240, etc. may be realized by the processor 1001.
  • the processor 1001 reads out a program (program code), software module, data, etc. from at least one of the auxiliary storage device 1003 and the communication device 1004 to the storage device 1002, and executes various processes according to the program.
  • the program is a program that causes a computer to execute at least a part of the operations described in the above-mentioned embodiment.
  • the control unit 140 of the base station 10 shown in FIG. 20 may be stored in the storage device 1002 and realized by a control program that runs on the processor 1001.
  • the control unit 240 of the terminal 20 shown in FIG. 21 may be stored in the storage device 1002 and realized by a control program that runs on the processor 1001.
  • the processor 1001 may be implemented by one or more chips.
  • the program may be transmitted from a network via a telecommunication line.
  • the storage device 1002 is a computer-readable recording medium and may be composed of, for example, at least one of a ROM (Read Only Memory), an EPROM (Erasable Programmable ROM), an EEPROM (Electrically Erasable Programmable ROM), a RAM (Random Access Memory), etc.
  • the storage device 1002 may also be called a register, a cache, a main memory, etc.
  • the storage device 1002 can store executable programs (program codes), software modules, etc. for implementing a communication method relating to one embodiment of the present disclosure.
  • the auxiliary storage device 1003 is a computer-readable recording medium, and may be, for example, at least one of an optical disk such as a CD-ROM (Compact Disc ROM), a hard disk drive, a flexible disk, a magneto-optical disk (e.g., a compact disk, a digital versatile disk, a Blu-ray (registered trademark) disk), a smart card, a flash memory (e.g., a card, a stick, a key drive), a floppy (registered trademark) disk, a magnetic strip, etc.
  • the above-mentioned storage medium may be, for example, a database, a server, or other suitable medium that includes at least one of the storage device 1002 and the auxiliary storage device 1003.
  • the communication device 1004 is hardware (transmitting/receiving 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, etc.
  • the communication device 1004 may be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc., to realize at least one of, for example, Frequency Division Duplex (FDD) and Time Division Duplex (TDD).
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • the transmitting/receiving antenna, an amplifier unit, a transmitting/receiving unit, a transmission path interface, etc. may be realized by the communication device 1004.
  • the transmitting/receiving unit may be implemented as a transmitting unit or a receiving unit that is physically or logically separated.
  • the input device 1005 is an input device (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that accepts input from the outside.
  • the output device 1006 is an output device (e.g., a display, a speaker, an LED lamp, etc.) that performs output to the outside. Note that the input device 1005 and the output device 1006 may be integrated into one structure (e.g., a touch panel).
  • each device such as the processor 1001 and the storage device 1002 is connected by a bus 1007 for communicating information.
  • the bus 1007 may be configured using a single bus, or may be configured using different buses between each device.
  • the drive unit 2002 is composed of, for example, an engine, a motor, or a hybrid of an engine and a motor.
  • the steering unit 2003 includes at least a steering wheel (also called a handlebar), and is configured to steer at least one of the front wheels and the rear wheels based on the operation of the steering wheel operated by the user.
  • the electronic control unit 2010 is composed of a microprocessor 2031, memory (ROM, RAM) 2032, and a communication port (IO port) 2033. Signals are input to the electronic control unit 2010 from various sensors 2021 to 2029 provided in the vehicle 2001.
  • the electronic control unit 2010 may also be called an ECU (Electronic Control Unit).
  • Signals from the various sensors 2021-2029 include a current signal from a current sensor 2021 that senses the motor current, a front and rear wheel rotation speed signal obtained by a rotation speed sensor 2022, a front and rear wheel air pressure signal obtained by an air pressure sensor 2023, a vehicle speed signal obtained by a vehicle speed sensor 2024, an acceleration signal obtained by an acceleration sensor 2025, an accelerator pedal depression amount signal obtained by an accelerator pedal sensor 2029, a brake pedal depression amount signal obtained by a brake pedal sensor 2026, a shift lever operation signal obtained by a shift lever sensor 2027, and a detection signal for detecting obstacles, vehicles, pedestrians, etc. obtained by an object detection sensor 2028.
  • the information service unit 2012 is composed of various devices, such as a car navigation system, an audio system, speakers, a television, and a radio, for providing (outputting) various information such as driving information, traffic information, and entertainment information, and one or more ECUs for controlling these devices.
  • the information service unit 2012 uses information acquired from an external device via the communication module 2013 or the like to provide various multimedia information and multimedia services to the occupants of the vehicle 2001.
  • the information service unit 2012 may include input devices (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, a touch panel, etc.) that accept input from the outside, and may also include output devices (e.g., a display, a speaker, an LED lamp, a touch panel, etc.) that perform output to the outside.
  • input devices e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, a touch panel, etc.
  • output devices e.g., a display, a speaker, an LED lamp, a touch panel, etc.
  • the driving assistance system unit 2030 is composed of various devices that provide functions for preventing accidents and reducing the driving burden on the driver, such as a millimeter wave radar, LiDAR (Light Detection and Ranging), a camera, a positioning locator (e.g., GNSS, etc.), map information (e.g., high definition (HD) maps, autonomous vehicle (AV) maps, etc.), a gyro system (e.g., IMU (Inertial Measurement Unit), INS (Inertial Navigation System), etc.), AI (Artificial Intelligence) chip, and AI processor, as well as one or more ECUs that control these devices.
  • the driving assistance system unit 2030 transmits and receives various information via the communication module 2013 to realize driving assistance functions or autonomous driving functions.
  • the communication module 2013 can communicate with the microprocessor 2031 and components of the vehicle 2001 via the communication port.
  • the communication module 2013 transmits and receives data via the communication port 2033 between the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, front wheels 2007, rear wheels 2008, axle 2009, microprocessor 2031 and memory (ROM, RAM) 2032 in the electronic control unit 2010, and sensors 2021 to 29, which are provided on the vehicle 2001.
  • the communication module 2013 is a communication device that can be controlled by the microprocessor 2031 of the electronic control unit 2010 and can communicate with an external device. For example, it transmits and receives various information to and from the external device via wireless communication.
  • the communication module 2013 may be located either inside or outside the electronic control unit 2010.
  • the external device may be, for example, a base station, a mobile station, etc.
  • the communication module 2013 may transmit at least one of the signals from the various sensors 2021-2028 described above input to the electronic control unit 2010, information obtained based on the signals, and information based on input from the outside (user) obtained via the information service unit 2012 to an external device via wireless communication.
  • the electronic control unit 2010, the various sensors 2021-2028, the information service unit 2012, etc. may be referred to as input units that accept input.
  • the PUSCH transmitted by the communication module 2013 may include information based on the above input.
  • the communication module 2013 receives various information (traffic information, signal information, vehicle distance information, etc.) transmitted from an external device and displays it on the information service unit 2012 provided in the vehicle 2001.
  • the information service unit 2012 may be called an output unit that outputs information (for example, outputs information to a device such as a display or speaker based on the PDSCH (or data/information decoded from the PDSCH) received by the communication module 2013).
  • the communication module 2013 also stores various information received from an external device in a memory 2032 that can be used by the microprocessor 2031.
  • the microprocessor 2031 may control the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, front wheels 2007, rear wheels 2008, axles 2009, sensors 2021 to 2029, etc. provided in the vehicle 2001.
  • the operations of multiple functional units may be physically performed by one part, or the operations of one functional unit may be physically performed by multiple parts.
  • the order of processing procedures described in the embodiment may be changed as long as there is no contradiction.
  • the base station 10 and the terminal 20 have been described using functional block diagrams, but such devices may be realized by hardware, software, or a combination thereof.
  • the software operated by the processor possessed by the base station 10 according to this embodiment and the software operated by the processor possessed by the terminal 20 according to this embodiment may each be stored in random access memory (RAM), flash memory, read only memory (ROM), EPROM, EEPROM, register, hard disk (HDD), removable disk, CD-ROM, database, server or any other suitable storage medium.
  • the notification of information is not limited to the aspects/embodiments described in the present disclosure and may be performed using other methods.
  • the notification of information may be performed by physical layer signaling (e.g., Downlink Control Information (DCI), Uplink Control Information (UCI)), higher layer signaling (e.g., Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling), broadcast information (Master Information Block (MIB), System Information Block (SIB)), other signals, or a combination of these.
  • RRC signaling may be referred to as an RRC message, and may be, for example, an RRC Connection Setup message, an RRC Connection Reconfiguration message, etc.
  • Each aspect/embodiment described in this disclosure may be a mobile communication system (mobile communications system) for mobile communications over a wide range of networks, including LTE (Long Term Evolution), LTE-A (LTE-Advanced), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), 5G (5th generation mobile communication system), 6th generation mobile communication system (6G), xth generation mobile communication system (xG) (xG (x is, for example, an integer or a decimal number)), FRA (Future Ra).
  • the present invention may be applied to at least one of systems using IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, UWB (Ultra-WideBand), Bluetooth (registered trademark), and other appropriate systems, and next-generation systems that are expanded, modified, created, or defined based on these. It may also be applied to a combination of multiple systems (for example, a combination of at least one
  • certain operations that are described as being performed by the base station 10 may in some cases be performed by its upper node.
  • various operations performed for communication with a terminal 20 may be performed by at least one of the base station 10 and other network nodes other than the base station 10 (such as, but not limited to, an MME or S-GW).
  • the base station 10 may be a combination of multiple other network nodes (such as an MME and an S-GW).
  • the information or signals described in this disclosure may be output from a higher layer (or a lower layer) to a lower layer (or a higher layer). They may be input and output via multiple network nodes.
  • the input and output information may be stored in a specific location (e.g., memory) or may be managed using a management table.
  • the input and output information may be overwritten, updated, or added to.
  • the output information may be deleted.
  • the input information may be sent to another device.
  • the determination in this disclosure may be based on a value represented by one bit (0 or 1), a Boolean (true or false) value, or a comparison of numerical values (e.g., a comparison with a predetermined value).
  • Software shall be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures, functions, etc., whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise.
  • Software, instructions, information, etc. may also be transmitted and received via a transmission medium.
  • a transmission medium For example, if the software is transmitted from a website, server, or other remote source using at least one of wired technologies (such as coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL)), and/or wireless technologies (such as infrared, microwave), then at least one of these wired and wireless technologies is included within the definition of a transmission medium.
  • wired technologies such as coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL)
  • wireless technologies such as infrared, microwave
  • the information, signals, etc. described in this disclosure may be represented using any of a variety of different technologies.
  • the data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any combination thereof.
  • the channel and the symbol may be a signal (signaling).
  • the signal may be a message.
  • the component carrier (CC) may be called a carrier frequency, a cell, a frequency carrier, etc.
  • system and “network” are used interchangeably.
  • a radio resource may be indicated by an index.
  • the names used for the above-mentioned parameters are not limiting in any respect. Furthermore, the formulas etc. using these parameters may differ from those explicitly disclosed in this disclosure.
  • the various channels (e.g., PUCCH, PDCCH, etc.) and information elements may be identified by any suitable names, and therefore the various names assigned to these various channels and information elements are not limiting in any respect.
  • base station BS
  • radio base station base station
  • base station fixed station
  • NodeB eNodeB
  • gNodeB gNodeB
  • access point e.g., "transmission point”
  • gNodeB gNodeB
  • a base station may also be referred to by terms such as macrocell, small cell, femtocell, and picocell.
  • a base station can accommodate one or more (e.g., three) cells.
  • a base station accommodates multiple cells, the entire coverage area of the base station can be divided into multiple smaller areas, and each smaller area can also provide communication services by a base station subsystem (e.g., a small indoor base station (RRH: Remote Radio Head)).
  • RRH Remote Radio Head
  • the term "cell” or “sector” refers to a part or the entire coverage area of at least one of the base station and base station subsystems that provide communication services in this coverage.
  • a base station transmitting information to a terminal may be interpreted as the base station instructing the terminal to control or operate based on the information.
  • MS Mobile Station
  • UE User Equipment
  • a mobile station may also be referred to 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 terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable terminology.
  • At least one of the base station and the mobile station may be called a transmitting device, a receiving device, a communication device, etc.
  • At least one of the base station and the mobile station may be a device mounted on a moving object, or the moving object itself.
  • the moving object may be a vehicle (e.g., a car, an airplane, etc.), an unmanned moving object (e.g., a drone, an autonomous vehicle, etc.), or a robot (manned or unmanned).
  • At least one of the base station and the mobile station may include a device that does not necessarily move during communication operations.
  • at least one of the base station and the mobile station may be an IoT (Internet of Things) device such as a sensor.
  • IoT Internet of Things
  • the base station in the present disclosure may be read as a user terminal.
  • each aspect/embodiment of the present disclosure may be applied to a configuration in which communication between a base station and a user terminal is replaced with communication between multiple terminals 20 (which may be called, for example, D2D (Device-to-Device) or V2X (Vehicle-to-Everything)).
  • the terminal 20 may be configured to have the functions of the base station 10 described above.
  • terms such as "uplink” and "downlink” may be read as terms corresponding to terminal-to-terminal communication (for example, "side").
  • the uplink channel, downlink channel, etc. may be read as a side channel.
  • the user terminal in this disclosure may be interpreted as a base station.
  • the base station may be configured to have the functions of the user terminal described above.
  • determining may encompass a wide variety of actions.
  • Determining and “determining” may include, for example, judging, calculating, computing, processing, deriving, investigating, looking up, search, inquiry (e.g., searching in a table, database, or other data structure), and considering ascertaining as “judging” or “determining.”
  • determining and “determining” may include receiving (e.g., receiving information), transmitting (e.g., sending information), input, output, accessing (e.g., accessing data in memory), and considering ascertaining as “judging” or “determining.”
  • judgment” and “decision” can include considering resolving, selecting, choosing, establishing, comparing, etc., to have been “judged” or “decided.” In other words, “judgment” and “decision” can include considering some action to have been “judged” or “decided.” Additionally, “judgment (decision)” can be interpreted as “assuming,” “ex
  • connection refers to any direct or indirect connection or coupling between two or more elements, and may include the presence of one or more intermediate elements between two elements that are “connected” or “coupled” to each other.
  • the coupling or connection between elements may be physical, logical, or a combination thereof.
  • “connected” may be read as "access.”
  • two elements may be considered to be “connected” or “coupled” to each other using at least one of one or more wires, cables, and printed electrical connections, as well as electromagnetic energy having wavelengths in the radio frequency range, microwave range, and optical (both visible and invisible) range, as some non-limiting and non-exhaustive examples.
  • the reference signal may also be abbreviated as RS (Reference Signal) or may be called a pilot depending on the applicable standard.
  • the phrase “based on” does not mean “based only on,” unless expressly stated otherwise. In other words, the phrase “based on” means both “based only on” and “based at least on.”
  • any reference to an element using a designation such as "first,” “second,” etc., used in this disclosure does not generally limit the quantity or order of those elements. These designations may be used in this disclosure as a convenient method of distinguishing between two or more elements. Thus, a reference to a first and a second element does not imply that only two elements may be employed or that the first element must precede the second element in some way.
  • a radio frame may be composed of one or more frames in the time domain. Each of the one or more frames in the time domain may be called a subframe. A subframe may further be composed of one or more slots in the time domain. A subframe may have a fixed time length (e.g., 1 ms) that is independent of numerology.
  • Numerology may be a communication parameter that is applied to at least one of the transmission and reception of a signal or channel. Numerology may indicate, for example, at least one of the following: subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame structure, a specific filtering process performed by the transceiver in the frequency domain, a specific windowing process performed by the transceiver in the time domain, etc.
  • SCS subcarrier spacing
  • TTI transmission time interval
  • a slot may consist of one or more symbols in the time domain (such as OFDM (Orthogonal Frequency Division Multiplexing) symbols, SC-FDMA (Single Carrier Frequency Division Multiple Access) symbols, etc.).
  • a slot may be a time unit based on numerology.
  • a slot may include multiple minislots. Each minislot may consist of one or multiple symbols in the time domain. A minislot may also be called a subslot. A minislot may consist of fewer symbols than a slot.
  • a PDSCH (or PUSCH) transmitted in a time unit larger than a minislot may be called PDSCH (or PUSCH) mapping type A.
  • a PDSCH (or PUSCH) transmitted using a minislot may be called PDSCH (or PUSCH) mapping type B.
  • Radio frame, subframe, slot, minislot, and symbol all represent time units for transmitting signals. Radio frame, subframe, slot, minislot, and symbol may each be referred to by a different name that corresponds to the radio frame, subframe, slot, minislot, and symbol.
  • one subframe may be called a Transmission Time Interval (TTI)
  • TTI Transmission Time Interval
  • multiple consecutive subframes may be called a TTI
  • one slot or one minislot may be called a TTI.
  • at least one of the subframe and the TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (e.g., 1-13 symbols), or a period longer than 1 ms.
  • the unit representing the TTI may be called a slot, minislot, etc., instead of a subframe.
  • the TTI may be a transmission time unit for a channel-coded data packet (transport block), a code block, a code word, etc., or may be a processing unit for scheduling, link adaptation, etc.
  • the time interval e.g., the number of symbols
  • the time interval in which a transport block, a code block, a code word, etc. is actually mapped may be shorter than the TTI.
  • one or more TTIs may be the minimum time unit of scheduling.
  • the number of slots (minislots) that constitute the minimum time unit of 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), normal TTI, long TTI, normal subframe, normal subframe, long subframe, slot, etc.
  • TTI shorter than a normal TTI may be called a shortened TTI, short TTI, partial or fractional TTI, shortened subframe, short subframe, minislot, subslot, slot, etc.
  • a long TTI (e.g., a normal TTI, a subframe, etc.) may be interpreted as a TTI having a time length of more than 1 ms
  • a short TTI e.g., a shortened TTI, etc.
  • TTI length shorter than the TTI length of a long TTI and equal to or greater than 1 ms.
  • a resource block is a resource allocation unit in the time domain and frequency domain, and may include one or more consecutive subcarriers in the frequency domain.
  • the number of subcarriers included in an RB may be the same regardless of the numerology, and may be, for example, 12.
  • the number of subcarriers included in an RB may be determined based on the numerology.
  • the time domain of an RB may include one or more symbols and may be one slot, one minislot, one subframe, or one TTI in length.
  • One TTI, one subframe, etc. may each be composed of one or more resource blocks.
  • one or more RBs may be referred to as a physical resource block (PRB), a sub-carrier group (SCG), a resource element group (REG), a PRB pair, an RB pair, etc.
  • PRB physical resource block
  • SCG sub-carrier group
  • REG resource element group
  • PRB pair an RB pair, etc.
  • a resource block may be composed of one or more resource elements (REs).
  • REs resource elements
  • one RE may be a radio resource area of one subcarrier and one symbol.
  • a bandwidth part which may also be referred to as a partial bandwidth, may represent a subset of contiguous common resource blocks (RBs) for a given numerology on a given carrier, where the common RBs may be identified by an index of the RB relative to a common reference point of the carrier.
  • PRBs may be defined in a BWP and numbered within the BWP.
  • the BWP may include a BWP for UL (UL BWP) and a BWP for DL (DL BWP).
  • UL BWP UL BWP
  • DL BWP DL BWP
  • One or more BWPs may be configured within one carrier for the terminal 20.
  • At least one of the configured BWPs may be active, and the terminal 20 may not be expected to transmit or receive a specific signal/channel outside the active BWP.
  • BWP bit stream
  • radio frames, subframes, slots, minislots, and symbols are merely examples.
  • the number of subframes included in a radio frame, the number of slots per subframe or radio frame, the number of minislots included in a slot, the number of symbols and RBs included in a slot or minislot, the number of subcarriers included in an RB, as well as the number of symbols in a TTI, the symbol length, and the cyclic prefix (CP) length can be changed in various ways.
  • a and B are different may mean “A and B are different from each other.”
  • the term may also mean “A and B are each different from C.”
  • Terms such as “separate” and “combined” may also be interpreted in the same way as “different.”
  • notification of specific information is not limited to being done explicitly, but may be done implicitly (e.g., not notifying the specific information).
  • Base station 110 Transmitter 120 Receiver 130 Setting unit 140 Control unit 20 Terminal 210 Transmitter 220 Receiver 230 Setting unit 240 Control unit 1001 Processor 1002 Storage device 1003 Auxiliary storage device 1004 Communication device 1005 Input device 1006 Output device 2001 Vehicle 2002 Drive unit 2003 Steering unit 2004 Accelerator pedal 2005 Brake pedal 2006 Shift lever 2007 Front wheel 2008 Rear wheel 2009 Axle 2010 Electronic control unit 2012 Information service unit 2013 Communication module 2021 Current sensor 2022 Rotational speed sensor 2023 Air pressure sensor 2024 Vehicle speed sensor 2025 Acceleration sensor 2026 Brake pedal sensor 2027 Shift lever sensor 2028 Object detection sensor 2029 Accelerator pedal sensor 2030 Driving assistance system unit 2031 Microprocessor 2032 Memory (ROM, RAM) 2033 Communication port (IO port)

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