WO2019198249A1 - Équipement utilisateur et station de base radio - Google Patents

Équipement utilisateur et station de base radio Download PDF

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Publication number
WO2019198249A1
WO2019198249A1 PCT/JP2018/015626 JP2018015626W WO2019198249A1 WO 2019198249 A1 WO2019198249 A1 WO 2019198249A1 JP 2018015626 W JP2018015626 W JP 2018015626W WO 2019198249 A1 WO2019198249 A1 WO 2019198249A1
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Prior art keywords
urllc
resource
base station
gnb
data
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PCT/JP2018/015626
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English (en)
Japanese (ja)
Inventor
和晃 武田
一樹 武田
聡 永田
幹生 岩村
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株式会社Ｎｔｔドコモ
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Priority to PCT/JP2018/015626 priority Critical patent/WO2019198249A1/fr
Publication of WO2019198249A1 publication Critical patent/WO2019198249A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the present invention relates to a user terminal and a radio base station in a next-generation mobile communication system.
  • LTE Long Term Evolution
  • Non-patent Document 1 LTE Advanced, 3GPP Rel. 10-14
  • LTE Rel. 8, 9 LTE Rel. 8, 9
  • LTE successor systems for example, FRA (Future Radio Access), 5G (5th generation mobile communication system), 5G + (plus), NR (New Radio), NX (New radio access), FX (Future generation radio access), 3GPP Also referred to as Rel.
  • CA Carrier Aggregation
  • CC Component Carrier, cell
  • UE User Equipment
  • DC Dual Connectivity
  • CG Cell Group
  • Each cell group includes at least one carrier (also referred to as CC or cell). Since a plurality of carriers of different radio base stations are integrated, DC is also called inter-base station CA (Inter-eNB CA).
  • a plurality of services are respectively transferred to a plurality of different radio base stations (for example, a plurality of gNBs: gNodeB, gNB and eNB, a plurality of eNBs). Etc.) are also being considered.
  • the multiple services include, for example, high-speed and large-capacity services with different requirements (for example, services related to enhanced Mobile Broad Band (eMBB service)) and ultra-high reliability and low-latency services (for example, URLLC : Ultra Reliable and Low Latency Communications (related service (URLLC service)).
  • eMBB service enhanced Mobile Broad Band
  • URLLC Ultra Reliable and Low Latency Communications
  • interference between the plurality of cells may increase.
  • the present invention has been made in view of this point, and an object of the present invention is to provide a user terminal and a radio base station that can suppress interference between a plurality of cells provided with different services.
  • a user terminal includes a receiving unit that receives information on a resource set within a predetermined bandwidth, and a first radio base station for specific data using the set resource And a control unit that controls at least one of reception from and transmission to the first radio base station.
  • 1A and 1B are diagrams illustrating an example of operation of a URLLC service.
  • 2A to 2C are diagrams showing examples of deployment scenarios (deployment scenarios) of the eMBB service and the URLLC service using the same frequency.
  • 3A and 3B are diagrams illustrating an example of interference between a plurality of cells formed by a plurality of gNBs.
  • 4A and 4B are diagrams illustrating an example of quasi-static resource allocation according to the first aspect.
  • 5A and 5B are diagrams illustrating a first example of the first dynamic resource allocation according to the second mode.
  • 6A and 6B are diagrams illustrating a second example of the first dynamic resource allocation according to the second mode.
  • 7A and 7B are diagrams illustrating an example of second dynamic resource allocation according to the second mode.
  • FIG. 8 is a diagram illustrating an example of a hybrid scheme according to the third aspect.
  • FIG. 9 is a diagram illustrating an example of a schematic configuration of the wireless communication system according to the present embodiment.
  • FIG. 10 is a diagram illustrating an example of the overall configuration of the radio base station according to the present embodiment.
  • FIG. 11 is a diagram illustrating an example of a functional configuration of the radio base station according to the present embodiment.
  • FIG. 12 is a diagram illustrating an example of the overall configuration of the user terminal according to the present embodiment.
  • FIG. 13 is a diagram illustrating an example of a functional configuration of the user terminal according to the present embodiment.
  • FIG. 14 is a diagram illustrating an example of a hardware configuration of the radio base station and the user terminal according to the present embodiment.
  • ultra-reliable and low-latency services eg, URLLC: Ultra Reliable and Low Latency Communications related services (URLLC) Service
  • URLLC Ultra Reliable and Low Latency Communications related services
  • the URLLC service As a use case of the URLLC service, a communication service that requires at least one of high reliability (high accuracy) and low delay (for example, communication in a plant or a hospital) is assumed.
  • FIG. 1A and 1B are diagrams illustrating an example of operation of the URLLC service.
  • FIG. 1A shows an example in which a plurality of services having different requirements (for example, both eMBB service and URLLC service) are provided by the same radio base station (for example, gNB: gNodeB).
  • the radio base station may be referred to as gNB, macro base station, macro gNB, eNB: eNodeB, or macro eNB.
  • the gNB of FIG. 1A attempts to satisfy the error rate requirement of the URLLC service (eg, an error rate of 10 ⁇ 5 ), and the eMBB service (eg, an error of 10 ⁇ 1) with a lower error rate requirement.
  • the error rate requirement of the URLLC service eg, an error rate of 10 ⁇ 5
  • the eMBB service eg, an error of 10 ⁇ 1
  • usable modulation schemes and the like may be limited as compared to (rate).
  • FIG. 1B shows an example in which the plurality of services (for example, eMBB service and URLLC service) are provided by a plurality of different radio base stations (for example, gNB # 1 to # 3).
  • a radio base station that provides an eMBB service may be referred to as gNB, macro base station, macro gNB, eNB, macro eNB, or the like.
  • a radio base station to which the URLLC service is applied may be called a local base station, a local gNB, an eNB, a local eNB, a small base station, a small gNB, a small eNB, or the like.
  • providing separate eNBB and URLLC services by separate gNBs means that natural (or efficient) operation modes of eMBB services and URLLC services with different requirements. ).
  • gNB # 1 that provides the eMBB service and gNB # 2 and # 3 that provide the URLLC service use (or reuse) the same frequency (for example, F1) (Co -channel etc.) is considered natural (or efficient). This is because when gNB # 2 and # 3 use a frequency (frequency dedicated to URLLC service) different from that of gNB # 1, the frequency utilization efficiency may be lowered.
  • F1 Fre -channel etc.
  • FIGS. 2A to 2C are diagrams showing examples of deployment scenarios (deployment scenarios) of the eMBB service and the URLLC service using the same frequency.
  • FIG. 2A shows the same gNB that provides both the eMBB service and the URLLC service at the same frequency F1.
  • gNB # 1 has the same frequency F1 and uses a user terminal (for example, UE: User Equipment, eMBB UE, etc.) that uses an eMBB service and a user terminal that uses a URLLC service (for example, UE, Communicate with both URLLC and UE).
  • a user terminal for example, UE: User Equipment, eMBB UE, etc.
  • URLLC service for example, UE, Communicate with both URLLC and UE.
  • interruption of URLLC UE data to eMBB UE data may be controlled.
  • the scenario shown in FIG. 2A is 3GPP Rel. 15 is also expected to be supported.
  • FIG. 2B shows an example of a plurality of gNBs that separately provide an eMBB service and a URLLC service at the same frequency F1.
  • FIG. 2B shows an example in which the cell (coverage) of gNB # 2 is included in the cell of gNB # 1. Note that FIG. 2B is merely an example, and at least a part of the gNB # 2 cell may overlap with the gNB # 1 cell.
  • gNB # 1 communicates with the eMBB UE at the frequency F1
  • gNB # 2 communicates with the URLLC UE at the frequency F1.
  • FIG. 2C shows another example of a plurality of gNBs that separately provide an eMBB service and a URLLC service at the same frequency F1.
  • the gNB # 2 cell overlaps with a part of the gNB # 1 cell.
  • gNB # 1 communicates with the eMBB UE at the frequency F1
  • gNB # 2 communicates with the URLLC UE at the frequency F1.
  • gNB # 1 and gNB # 2 are wired links (eg, ideal backhaul such as optical fiber, or non-ideal backhaul such as X2 interface (Non-Ideal). backhaul)) or a wireless link (for example, OTA (Over The Air)).
  • wired links eg, ideal backhaul such as optical fiber, or non-ideal backhaul such as X2 interface (Non-Ideal). backhaul)
  • a wireless link for example, OTA (Over The Air)
  • OTA Over The Air
  • the relative (large / small) relationship of cells (coverage) between gNBs is not limited to that shown in FIGS. 2A to 2C.
  • the coverage of gNB # 1 that provides the eMBB service is greater than or equal to gNB # 2 coverage that provides the URLLC service, but the coverage of gNB # 1 is smaller than the coverage of gNB # 2. Also good.
  • each of the plurality of gNBs in which at least some cells overlap provide a plurality of services (for example, an eMBB service and a URLLC service) at the same frequency F1
  • a plurality of services for example, an eMBB service and a URLLC service
  • each of the plurality of gNBs Interference between cells may increase.
  • any gNB may communicate with both the eMBB UE and the URLLC UE.
  • gNB # 1 may communicate with both eMBB UE and URLLC UE
  • gNB # 2 may communicate with both eMBB UE and URLLC UE. Even in this case, inter-cell interference occurs between different services.
  • FIG. 3A shows a deployment scenario in which a plurality of services (for example, eMBB service and URLLC service) are provided at the same frequency by a plurality of gNBs (for example, gNB # 1 and # 2) as in FIG. 2C.
  • gNB # 2 that provides the URLLC service is shown in the building, but the location of gNB # 2 need not be in the building.
  • FIG. 3B shows an example of interference between a plurality of cells formed by the plurality of gNBs.
  • a case where one slot is composed of 14 symbols will be described as an example.
  • a downlink signal for example, data for URLLC service (URLLC data) or the like
  • URLLC data URLLC data
  • the downlink signal from gNB # 2 to URLLC UE is a downlink signal from gNB # 1 to eMBB UE (eg, data for eMBB service (eMBB data), etc.) May cause interference.
  • eMBB data data for eMBB service (eMBB data), etc.
  • the symbol # 3 of the slot # 0 for example, when the eMBB UE is located in the cell of the gNB # 2, the downlink signal from the gNB # 1 to the eMBB UE interferes with the downlink signal from the gNB # 2 to the URLLC UE. There is a risk of receiving.
  • the downlink signal from the gNB # 2 to the URLLC UE may be interfered by the uplink signal from the eMBB UE located in or near the cell of the gNB # 2 to the gNB # 1.
  • the uplink signal from the eMBB UE to the gNB # 1 is interfered by the downlink signal from the gNB # 2 to the URLLC UE. There is a risk of receiving.
  • an uplink signal for example, URLLC data
  • URLLC data for example, URLLC data
  • the uplink signal from URLLC UE to gNB # 2 may be interfered by the downlink signal from gNB # 1 to eMBB UE.
  • symbol # 1 of slot # 1 for example, when the eMBB UE is located in or near the cell of gNB # 2, the downlink signal from gNB # 1 to eMBB UE is based on the uplink signal from URLLC UE to gNB # 2. There is a risk of interference.
  • an uplink signal from URLLC UE to gNB # 2 may be interfered by an uplink signal from eMBB UE located in or near the cell of gNB # 2 to gNB # 1. is there.
  • the uplink signal from the eMBB UE to the gNB # 1 is transmitted by the uplink signal from the URLLC UE to the gNB # 2. There is a risk of interference.
  • a plurality of different services for example, eMBB service and URLLC service
  • eMBB service and URLLC service are provided at the same frequency F1 in a plurality of cells at least partially overlapping.
  • interference between the plurality of cells is reduced. It is desirable to suppress it.
  • the present inventors have made a quasi-static allocation (semi-static resource allocation) of resources for specific data (for example, URLLC data) and the behavior of resources for the specific data.
  • a quasi-static allocation for example, URLLC data
  • dynamic resource allocation a cell provided with the specific service (for example, URLLC service) and another service (for example, eMBB service)
  • eMBB service for example, eMBB service
  • a case where a plurality of radio base stations that provide different services is a plurality of gNBs (NR stand-alone) will be described as an example, but the present invention is not limited to this.
  • the present embodiment can be applied even when at least some of the plurality of radio base stations are radio base stations of different radio access technologies (RAT) (for example, non-standalone where eNB and gNB cooperate) It is.
  • RAT radio access technologies
  • carrier aggregation that integrates a plurality of cells (carrier, component carrier (CC)) may be applied to the user terminal of the present embodiment, or a plurality of cells each including one or more cells.
  • Multi-connectivity also referred to as dual connectivity (DC) or the like
  • DC dual connectivity
  • eMBB service and URLLC service are illustrated as different services, but are not limited thereto.
  • URLLC service data URLLC data
  • URLLC data is exemplified as the specific data to which at least one of the quasi-static resource allocation and the dynamic resource allocation is applied, it is not limited to this.
  • a plurality of user terminals for example, eMBB UE and URLLC UE
  • the plurality of services are used by a single user terminal. It is also applicable to cases.
  • the URLLC data is data for URLLC service transmitted on at least one of a downlink shared channel (for example, PDSCH: Physical Downlink Shared Channel) and an uplink shared channel (for example, PUSCH: Physical Uplink Shared Channel), It may include at least one of user data and control information signaled by higher layer signaling.
  • a downlink shared channel for example, PDSCH: Physical Downlink Shared Channel
  • PUSCH Physical Uplink Shared Channel
  • a resource for specific data (for example, URLLC data) is set (notified) by higher layer signaling. ).
  • the upper layer signaling may be, for example, RRC (Radio Resource Control) signaling, MAC (Medium Access Control) signaling, broadcast information, or a combination thereof.
  • the broadcast information may be, for example, a master information block (MIB: Master Information Block), a system information block (SIB: System Information Block), and minimum system information (RMSI: Remaining Minimum System Information).
  • MIB Master Information Block
  • SIB System Information Block
  • RMSI Remaining Minimum System Information
  • a configured resource (also referred to as a reserved resource or the like) by higher layer signaling may be at least one of a time resource and a frequency resource for specific data (for example, URLLC data).
  • the time resource may be, for example, a predetermined number of symbols, a predetermined number of slots, or a predetermined number of subslots.
  • the frequency resource may be, for example, a predetermined number of resource blocks (physical resource block (PRB)).
  • FIG. 4A and 4B are diagrams illustrating an example of quasi-static resource allocation according to the first aspect.
  • gNB # 1 performs at least one of transmission and reception of eMBB data (transmission / reception) at frequency F1.
  • gNB # 2 transmits / receives URLLC data at frequency F1. Further, it is assumed that the gNB # 1 cell overlaps at least a part of the gNB # 2 cell.
  • URLLC data resources may be semi-statically configured in the URLLC UE within a predetermined bandwidth (BW).
  • the predetermined bandwidth may be a carrier bandwidth, or may be a partial bandwidth (BWP: Bandwidth Part) set in the carrier. .
  • the setting resource for URLLC data includes a predetermined number of symbols (here, 2 symbols) and has a predetermined period (here, 4 symbol periods).
  • the setting resource is set in symbol units, but the setting resource may be in symbol units, slot units, or subframe units. In the following, a case where the setting is made in symbol units will be described.
  • frequency hopping is applied to the URLLC setting resource, but the frequency hopping may not be applied.
  • the URLLC UE performs at least one of reception from the gNB # 2 and transmission to the gNB # 2 with respect to the URLLC data by using the setting resource for URLLC data.
  • the URLLC UE receives downlink data (also referred to as PDSCH) from gNB # 2 using the setting resources of symbols # 2, # 3, # 6, and # 7 in slot # 0, and slot # 1.
  • Uplink data (also referred to as PUSCH) for gNB # 2 is transmitted using the setting resources of symbols # 0 and # 1. Note that the setting resources of symbols # 10 and # 11 in slot # 0 are not used because there is no URLLC service traffic.
  • the eMBB UE receives downlink data from gNB # 1 and transmits uplink data for gNB # 1 using resources scheduled in addition to the setting resource for the URLLC data.
  • the setting resource may be notified (inform) or may not be notified.
  • the setting resource for URLLC data is not used for the eMBB service.
  • gNB # 1 does not need to schedule eMBB data for URLLC setting resources.
  • Information regarding setting resources for URLLC data may be shared between gNBs # 1 and # 2.
  • the setting resource information may include, for example, information indicating at least one of frequency offset when frequency hopping is applied, whether or not to apply time resource, period, frequency resource, and frequency hopping of the setting resource.
  • the configuration resource information may include information on at least one of a demodulation reference signal (DMRS), a modulation scheme, and a coding rate of URLLC data transmitted using the configuration resource.
  • DMRS demodulation reference signal
  • gNB # 1 may transmit the set resource information to gNB # 2 as information related to the blank resource of gNB # 1.
  • the gNB # 2 may communicate with the URLLC UE using the setting resource indicated by the setting resource information from the gNB # 1.
  • the gNB # 2 may transmit the set resource information to the gNB # 1 as information related to resources reserved by the gNB # 2 (resources that the gNB # 2 desires to use).
  • gNB # 1 may stop scheduling of eMBB data for the setting resource indicated by the setting resource information from gNB # 2.
  • the signaling between gNB # 1 and # 2 may be performed by a wired link (for example, an ideal backhaul such as an optical fiber or a non-ideal backhaul such as an X2 interface), or May be performed over a wireless link (eg, OTA).
  • a wired link for example, an ideal backhaul such as an optical fiber or a non-ideal backhaul such as an X2 interface
  • May be performed over a wireless link eg, OTA.
  • the URLLC UE may receive the configuration resource information.
  • the URLLC UE may receive the set resource information by higher layer signaling (for example, at least one of RRC signaling, MAC signaling, and broadcast information).
  • the URLLC UE may receive the set resource information from gNB # 2 forming a cell for URLLC service (URLLC data).
  • the URLLC service cell may be referred to as a local cell, a primary secondary cell (PSCell: Primary Secondary cell), a primary cell (PCell: Primary Cell), or a serving cell.
  • the URLLC UE may receive the set resource information from gNB # 1 forming a cell for eMBB service (eMBB data).
  • the cell for the eMBB service may be called a macro cell, a PCell, a serving cell, or the like.
  • the URLLC UE may control transmission / reception of URLLC data using the setting resource based on the setting resource information.
  • the eMBB UE may or may not receive information (for example, the set resource information) regarding the gNB # 1 blank resource (first example) or may receive the second (second Example).
  • the eMBB UE may not receive information (for example, the set resource information) regarding the gNB # 1 blank resource.
  • the GNB # 1 does not use the setting resource for URLLC in the cell of gNB # 1 (set as a blank resource).
  • the gNB # 1 may schedule downlink data (for example, PDSCH) for the eMBB UE and uplink data (for example, PUSCH) from the eMBB UE for resources other than blank resources within a predetermined bandwidth.
  • downlink data for example, PDSCH
  • uplink data for example, PUSCH
  • gNB # 1 may transmit information on the blank resource of gNB # 1 (for example, the set resource information) to gNB # 2.
  • the gNB # 2 may transmit downlink data (for example, PDSCH) to the URLLC UE using the configuration resource (gNB # 1 blank resource) in the gNB # 2 cell.
  • gNB # 2 may receive the uplink data (for example, PUSCH) from the URLLC UE.
  • eMBB data is scheduled avoiding the blank resource of gNB # 1. For this reason, it is possible to reduce a load caused by processing (e.g., at least one of eMBB data rate matching and puncturing for blank resources) related to transmission / reception in the eMBB UE.
  • processing e.g., at least one of eMBB data rate matching and puncturing for blank resources
  • the eMBB UE may receive information on the blank resource of gNB # 1 (for example, the set resource information). For example, the eMBB UE may receive information regarding the blank resource through at least one of higher layer signaling and L1 signaling.
  • the upper layer signaling is at least one of RRC signaling, MAC signaling, and broadcast information, for example.
  • the L1 signaling is, for example, downlink control information (DCI: Downlink Control Information) and is also called physical layer signaling or the like.
  • DCI Downlink Control Information
  • the eMBB UE may rate match the blank resource (the setting resource for the URLLC) indicated by the information on the blank resource with respect to the resource allocated (scheduled) for transmission / reception of eMBB data.
  • the eMBB UE may puncture the blank resource (the setting resource for the URLLC) indicated by the information on the blank resource with respect to the resource allocated for transmission / reception of eMBB data.
  • the eMBB UE transmits / receives the eMBB data when at least a part of the resources allocated to the transmission / reception of the eMBB data overlaps with the blank resource (the setting resource for the URLLC) indicated by the information on the blank resource. Reception may be stopped.
  • the eMBB UE appropriately controls processing (for example, at least one of rate matching, puncturing, and cancellation) related to transmission / reception of eMBB data based on information regarding the blank resource of gNB # 1. For this reason, the load of scheduling of eMBB data in gNB # 1 can be reduced.
  • a resource for specific data for example, URLLC data
  • other data for example, eMBB data
  • the gNB that transmits / receives data other than the specific data may dynamically allocate the resource for the specific data (for example, URLLC resource) (first 1 dynamic resource allocation).
  • the gNB that transmits / receives the specific data may dynamically allocate the resource for the specific data (for example, URLLC resource) (second dynamic resource allocation).
  • the second aspect will be described with a focus on differences from the first aspect.
  • the gNB that transmits / receives eMBB data may transmit DCI indicating the URLLC resource.
  • a plurality of control resource sets may be set within a predetermined bandwidth (for example, BWP).
  • CORESET is a resource area to which a downlink control channel (for example, PDCCH: Physical Downlink Control Channel) is allocated, and includes a predetermined frequency domain resource and a time domain resource (for example, 1 or 2 OFDM symbols). May be.
  • PDCCH or DCI is mapped to a predetermined resource unit in CORESET.
  • a plurality of DCIs for different uses may be transmitted from different gNBs within the plurality of CORESETs (or a plurality of search spaces for each of the plurality of CORESETs).
  • one DCI may indicate a URLLC resource, and another DCI may grant transmission / reception of URLLC data.
  • the plurality of DCIs may be transmitted in different DCI formats.
  • cyclic redundancy check (CRC) bits scrambled (masked) with different identifiers may be added to the plurality of DCIs.
  • CRC cyclic redundancy check
  • RNTI Radio Network Temporary Identifier
  • the plurality of DCIs may be monitored by a user terminal (for example, URLLC UE) (first example), or some of the plurality of DCIs transmit specific data (for example, URLLC data). It may be monitored by the receiving gNB (second example).
  • a user terminal for example, URLLC UE
  • specific data for example, URLLC data
  • a user terminal for example, URLLC UE
  • a plurality of DCIs may be detected by monitoring.
  • 5A and 5B are diagrams illustrating a first example of the first dynamic resource allocation according to the second mode. 5A and 5B, the description of the same contents as in FIGS. 4A and 4B will be omitted, and the difference from FIGS. 4A and 4B will be mainly described.
  • a plurality of CORESETs may be set within a predetermined bandwidth (BW).
  • the plurality of CORESETs may be arranged in the same symbol with a predetermined period (for example, four symbol periods).
  • the plurality of CORESETs may be arranged in different frequency resources within the predetermined bandwidth.
  • the URLLC UE monitors (blind decoding) CORESET # 1 and # 2 (or a plurality of search spaces set in CORESET # 1 and # 2 respectively).
  • the eMBB UE may monitor CORESET # 1 (or a search space set in CORESET # 1).
  • the URLLC UE detects DCI # 1 indicating the URLLC resource in CORESET # 1.
  • the DCI # 1 may be transmitted from the gNB # 1.
  • the URLLC UE detects DCI # 2 that grants (schedules) URLLC data in CORESET # 2.
  • the DCI # 2 may be transmitted from the gNB # 2.
  • DCI # 1 detected by CORESET # 1 may include information on URLLC resources (URLLC resource information).
  • the URLLC resource information may include, for example, information indicating at least one of a time resource and a frequency resource in which URLLC data can be used.
  • DCI # 2 detected by CORESET # 2 may include information (URLLC data information) related to URLLC data transmitted / received using the URLLC resource indicated by DCI # 1.
  • URLLC data information includes, for example, URLLC data modulation scheme, coding rate, demodulation reference signal (DMRS) and other signals (for example, synchronization signal block (SSB: Synchronization Signal Block, SS / PBCH block).
  • SSB Synchronization Signal Block
  • SS / PBCH block synchronization signal block
  • QCL pseudo-colocation
  • CSI-RS Channel State Information Reference Signal
  • TCI Transmission Configuration Indication
  • TCI Transmission Configuration Indication
  • TCI Transmission Configuration Indication
  • TCI Transmission Configuration Indication
  • TCI Transmission Configuration Indication
  • GNB # 1 may use the URLLC resource indicated by DCI # 1 as a blank resource and schedule eMBB data in addition to the URLLC resource.
  • the gNB # 2 may transmit / receive URLLC data using the URLLC resource indicated by the DCI # 1.
  • Information regarding URLLC resources may be shared between gNBs # 1 and 2.
  • the gNB # 1 may transmit information (candidate set information) indicating one or more candidate sets (candidate sets) of the URLLC resource to the gNB # 2.
  • DCI # 1 transmitted from gNB # 1 in CORESET # 1 may indicate a single URLLC resource in the candidate set.
  • the URLLC UE may control reception / transmission of URLLC data using the URLLC resource indicated by DCI # 1 based on DCI # 2 detected by COERSET # 2.
  • the URLLC UE may receive configuration information (CORESET configuration information) regarding a plurality of CORESET # 1 and # 2 set within a predetermined bandwidth.
  • the URLLC UE may receive the CORESET configuration information by upper layer signaling (for example, at least one of RRC signaling, MAC signaling, and broadcast information).
  • the CORESET configuration information includes each CORESET identifier, time resource (period), frequency resource, period, control channel element (CCE: Control Resource Set) and resource element group (REG: Resource Element Group) within the predetermined bandwidth.
  • CCE Control Resource Set
  • REG Resource Element Group
  • Information indicating at least one of the mapping type of the QCL between the DMRS of the PDCCH transmitted in each CORESET and another signal (SSB or CSI-RS) (TCI state).
  • the URLLC UE may receive the CORESET configuration information from either gNB # 2 or gNB # 1.
  • the URLLC UE may set CORESET # 1 and # 2 based on the CORESET configuration information, and may control monitoring (blind decoding) of DCI # 1 and # 2 in the CORESET # 1 and # 2, respectively.
  • the eMBB UE may or may not receive information on the blank resource of gNB # 1 (for example, the URLLC resource information). In the latter case, the eMBB UE may receive information regarding the blank resource through at least one of higher layer signaling and L1 signaling.
  • the eMBB UE may monitor CORESET # 1 (or a search space set in CORESET # 1) and detect DCI # 1 including the URLLC resource information.
  • the eMBB UE determines the URLLC resource indicated by DCI # 1 as a blank resource, and processes related to transmission / reception of eMBB data scheduled by DCI (not shown) (for example, at least one of rate matching and puncturing for the blank resource) May be controlled.
  • the eNBB UE may stop the transmission / reception of the eMBB data when at least a part of the resources allocated to the transmission / reception of the eMBB data overlaps with the URLLC resource indicated by the DCI # 1.
  • the eNBB UE may receive information (candidate set information) indicating one or more candidate sets (candidate sets) of URLLC resources (that is, blank resources of eMBB data) by higher layer signaling.
  • the DCI # 1 may indicate a single URLLC resource in the candidate set.
  • a gNB that transmits / receives URLLC data is a part of a plurality of CORESETs set within a predetermined bandwidth (for example, BWP) (or a plurality of searches included in each of the plurality of CORESETs). (Part of space) may be monitored to detect DCI indicating URLLC resources determined by the gNB sending / receiving eMBB data.
  • a predetermined bandwidth for example, BWP
  • 6A and 6B are diagrams illustrating a second example of the first dynamic resource allocation according to the second mode. 6A and 6B, description of the same contents as those in FIGS. 4A and 4B and FIGS. 5A and 5B will be omitted, and differences from FIGS. 4A and 4B and FIGS. 5A and 5B will be mainly described.
  • a plurality of CORESETs may be set within a predetermined bandwidth (BW).
  • the plurality of CORESETs may be arranged in different symbols in a predetermined cycle (for example, a 4-symbol cycle). Note that the period of the plurality of CORESETs may be the same or different.
  • gNB # 2 that transmits / receives URLLC data monitors (blind decoding) CORESET # 1 (or a search space set in CORESET # 1).
  • the URLLC UE monitors (blind decoding) CORESET # 2 (or search spaces respectively set in CORESET # 2).
  • the eMBB UE may monitor CORESET # 1 (or a search space set in CORESET # 1).
  • gNB # 2 detects DCI # 1 indicating the URLLC resource in CORESET # 1.
  • the DCI # 1 may be transmitted from the gNB # 1.
  • the gNB # 2 transmits DCLC # 2 that grants (schedules) URLLC data to at least a part of the URLLC resource indicated by the DCI # 1.
  • URLLC UE detects DCI # 2 that grants (schedules) URLLC data in CORESET # 2.
  • the URLLC UE may control transmission / reception of URLLC data based on DCI # 2.
  • DCI # 1 and DCI # 2 detected by CORESET # 1 may each include at least one piece of information described in the first example.
  • DCI # 2 may include information indicating at least one of a temporal resource and a frequency resource to which URLLC data is allocated among URLLC resources indicated by DCI # 1.
  • GNB # 1 may use the URLLC resource indicated by DCI # 1 as a blank resource and schedule eMBB data in addition to the URLLC resource.
  • the gNB # 2 may transmit / receive URLLC data using at least a part of the URLLC resource indicated by the DCI # 1.
  • Information regarding URLLC resources may be shared between gNBs # 1 and 2.
  • the gNB # 1 may transmit information (candidate set information) indicating one or more candidate sets (candidate sets) of the URLLC resource to the gNB # 2.
  • DCI # 1 transmitted from gNB # 1 in CORESET # 1 may indicate a single URLLC resource in the candidate set.
  • the gNB # 2 may select the URLLC resource indicated by the DCI # 1 detected by the CORESET # 1 from the candidate set signaled in advance from the gNB # 1.
  • gNB # 2 may receive configuration information regarding CORESET # 1 from gNB # 1.
  • the configuration information may include at least one of the information described in the CORESET configuration information of the first example.
  • the URLLC UE may receive configuration information (CORESET configuration information) on at least one of CORESET # 1 and # 2.
  • the URLLC UE may receive the configuration information through higher layer signaling (for example, at least one of RRC signaling, MAC signaling, and broadcast information).
  • the configuration information may include at least one of the information described in the CORESET configuration information of the first example.
  • the URLLC UE may receive the CORESET configuration information from either gNB # 1 or gNB # 2.
  • the URLLC UE may set CORESET # 2 based on the CORESET configuration information, and may control monitoring (blind decoding) of DCI # 2 in the CORESET # 2.
  • the URLLC UE may set CORESET # 1 based on the CORESET configuration information and control the monitoring of DCI # 1 in CORESET # 1.
  • the URLLC UE may monitor CORESET # 1 without monitoring CORESET # 2.
  • the user terminal may determine URLLC resources that can be used for transmission of UL URLLC data based on DCI # 1 detected by CORESET # 1.
  • the eMBB UE may or may not receive information on the blank resource of gNB # 1 (for example, the URLLC resource information in DCI # 1). In the latter case, the eMBB UE may receive information regarding the blank resource through at least one of higher layer signaling and L1 signaling.
  • the eMBB UE may monitor CORESET # 1 (or a search space set in CORESET # 1) and detect the DCI # 1.
  • the eMBB UE determines the URLLC resource indicated by DCI # 1 as a blank resource, and processes related to transmission / reception of eMBB data scheduled by DCI (not shown) (for example, at least one of rate matching and puncturing for the blank resource). May be controlled.
  • the eNBB UE may stop the transmission / reception of the eMBB data when at least a part of the resources allocated to the transmission / reception of the eMBB data overlaps with the URLLC resource indicated by the DCI # 1.
  • the eNBB UE may receive information (candidate set information) indicating one or more candidate sets (candidate sets) of URLLC resources (that is, blank resources of eMBB data) by higher layer signaling.
  • the DCI # 1 may indicate a single URLLC resource in the candidate set.
  • gNB # 2 transmits DCI # 2 that grants URLLC data based on DCI # 1 detected by CORESET # 1 within a predetermined bandwidth. For this reason, DCI # 1 and DCI # 2 may be arranged in CORESET of different symbols.
  • URLLC resources are dynamically allocated by DCI transmitted from gNB # 1 that transmits / receives eMBB data. Moreover, gNB # 1 makes the said URLLC resource a blank resource. Therefore, in the first dynamic resource allocation, even when different gNB # 1 and # 2 transmit / receive URLLCC data and eMBB data using the same frequency, the gNB # 1 and # 2 Interference between a plurality of formed cells can be suppressed.
  • ⁇ Second dynamic resource allocation> DCI indicating a URLLC resource (that is, a blank resource of eMBB data) is transmitted from the gNB that transmits / receives eMBB data.
  • the second dynamic resource allocation is different from the first dynamic resource allocation in that DCI indicating the URLLC resource scheduled in the URLLC data is transmitted from the gNB that transmits / receives the URLLC data.
  • one or more CORESETs may be set within a predetermined bandwidth (for example, BWP).
  • CORESET in which DCI for eMBB data is arranged and CORESET in which DCI for URLLC data is arranged may be common or may be different. .
  • gNB # 1 that transmits / receives eMBB data may monitor CORESET for URLLC data and detect DCI indicating a URLLC resource scheduled for URLLC data.
  • FIGS. 7A and 7B are diagrams illustrating an example of second dynamic resource allocation according to the second mode. 7A and 7B, the description of the same contents as in FIGS. 4A and 4B, FIGS. 5A and 5B, and FIGS. 6A and 6B is omitted, and the differences from FIGS. 4A and 4B, FIGS. 5A and 5B, and FIGS. The explanation will be focused on.
  • a CORESET for DCI for scheduling URLLC data may be set within a predetermined bandwidth (BW).
  • the CORESET may be common with DCI (not shown) or the like that schedules eMBB data, or may be dedicated to DCI transmitted from gNB # 2.
  • the CORESET may be a predetermined cycle (for example, a 4-symbol cycle).
  • the URLLC UE monitors (blind decoding) the CORESET (or search space set in each CORESET) in which DCI for scheduling URLLC data is arranged.
  • the URLLC UE controls transmission / reception of URLLC data using the URLLC resource indicated by the DCI.
  • the gNB # 1 that transmits / receives eMBB data monitors (blind decoding) CORESET (or a search space set in the CORESET) in which DCI for scheduling URLLC data is arranged.
  • the CORESET may be set in a UL slot.
  • the gNB # 1 may perform monitoring (blind decoding) of control information (DCI) arranged in the CORESET in the UL slot.
  • DCI control information
  • the URLLC resource indicated by the DCI may be a blank resource.
  • gNB # 1 may transmit DCI that schedules eMBB data to resources other than the blank resource.
  • the eMBB UE may monitor the CORESET.
  • the eMBB UE determines the URLLC resource indicated by the DCI as a blank resource, and performs processing related to transmission / reception of eMBB data scheduled by DCI (not shown) (for example, at least one of rate matching and puncturing for the blank resource). You may control.
  • the eNBB UE may stop the transmission / reception of the eMBB data when at least a part of the resources allocated to the transmission / reception of the eMBB data overlaps with the URLLC resource indicated by the DCI.
  • the DCI detected by the CORESET may include information on URLLC resources (URLLC resource information).
  • the URLLC resource information may include, for example, information indicating at least one of a time resource and a frequency resource in which URLLC data can be used.
  • the DCI may include information (URLLC data information) related to URLLC data transmitted / received using a URLLC resource.
  • the URLLC data information may include, for example, information indicating at least one of the URLLC data modulation scheme, coding rate, and the relationship between the DMRS and other signals (for example, SSB or CSI-RS) (CLI state). Good.
  • Information regarding URLLC resources may be shared between gNBs # 1 and 2. For example, even if gNB # 1 (or gNB # 2) transmits information (candidate set information) indicating one or more candidate sets (candidate sets) of URLLC resources to gNB # 2 (or gNB # 1). Good.
  • the DCI transmitted from gNB # 2 by CORESET shown in FIG. 7B may indicate a single URLLC resource in the candidate set.
  • the gNB # 1 may select a URLLC resource indicated by DCI detected by CORESET from a candidate set signaled in advance.
  • gNB # 1 may receive configuration information related to the CORESET from gNB # 2.
  • the configuration information may include at least one of the information described in the CORESET configuration information of the first example of the first dynamic resource allocation.
  • the URLLC UE may receive the configuration information (CORESET configuration information) related to the CORESET.
  • the URLLC UE may receive the configuration information through higher layer signaling (for example, at least one of RRC signaling, MAC signaling, and broadcast information).
  • the configuration information may include at least one of the information described in the CORESET configuration information of the first example of the first dynamic resource allocation.
  • the URLLC UE may receive the CORESET configuration information from either gNB # 1 or # 2.
  • the URLLC UE may set the CORESET based on the CORESET configuration information and control DCI monitoring (blind decoding) for scheduling the URLLC data in the CORESET.
  • the gNB # 2 monitors the CORESET (not shown) in which the DL slot of the gNB # 1 is arranged, and includes a DCI (for example, a slot format indicator (SFI) transmitted from the gNB # 1). DCI format 2_0) may be detected.
  • the SFI may indicate the transmission direction of each symbol in the slot (U: UL, D: DL, X: UL or DL may be used).
  • gNB # 2 may detect DCI including the SFI in the UL slot, and transmit DCI for scheduling URLLC data using a predetermined frequency resource in the UL slot (or symbol) of gNB # 1. .
  • the gNB # 1 may apply at least one of puncturing and rate matching to the eMBB data in the resource on which the URLLC data is scheduled. Or you may stop transmission of eMBB data in the said resource.
  • URLLC resources are dynamically allocated by DCI transmitted from gNB # 2 that transmits / receives URLLC data.
  • gNB # 1 detects the DCI in the UL slot, and uses the URLLC resource indicated by the DCI as a blank resource. Therefore, in the second dynamic resource allocation, gNB # 1 and # 2 are formed even when different gNB # 1 and # 2 transmit and receive URLLCC data and eMBB data using the same frequency. Interference between a plurality of cells can be suppressed.
  • a resource for specific data (for example, URLLC data) is dynamically allocated, and the resource is a cell in which other data (for example, eMBB data) is transmitted / received.
  • the resource is a cell in which other data (for example, eMBB data) is transmitted / received.
  • eMBB data for example, eMBB data
  • FIG. 8 is a diagram illustrating an example of a hybrid scheme according to the third aspect.
  • FIG. 8 shows an example of a combination of the quasi-static resource allocation shown in FIGS. 4A and 4B and the second dynamic resource allocation shown in FIGS. 7A and 7B.
  • the hybrid scheme is not limited to that shown in FIG. 8, and the first example (for example, FIGS. 5A and 5B) or the second example (for example, FIG. 5) of the quasi-static resource allocation and the first dynamic resource allocation. 6A and 6B) may be combined.
  • resources for URLLC data may be set semi-statically and periodically in the URLLC UE within a predetermined bandwidth (BW). Also, DCI CORESET for scheduling URLLC data may be set periodically.
  • CORESET monitored by at least one of the URLLC UE, gNB # 1, and gNB # 2 described in the second mode may be set with a longer cycle than the setting resource for URLLC data. Good.
  • gNB # 2 transmits DCI that schedules URLLC data with COREST of symbol # 7 in slot # 0.
  • gNB # 1 monitors the CORESET and detects the DCI.
  • gNB # 1 uses the URLLC resource indicated by the DCI as a blank resource.
  • gNB # 2 may transmit URLLC data using a part of the setting resources of symbols # 12 and # 13 (here, symbol # 13) in slot # 0. Moreover, gNB # 2 may transmit URLLC data using the setting resources of symbols # 6 and # 7 of slot # 1.
  • At least one of the signaling described in the first and second aspects may be applied to signaling between gNBs, signaling to URLLC UE, and signaling to eMBB UE.
  • the present invention is not limited to this.
  • the URLLC resource information may be included in another signal (for example, a wake-up signal (WUS)).
  • WUS wake-up signal
  • WUS may be a signal that triggers monitoring of PDCCH or a signal that is transmitted when the monitoring period of PDCCH is changed.
  • WUS may be called an activation signal, a wake-up signal, a start instruction signal, a reception instruction signal, a paging instruction signal, a PDCCH monitoring trigger signal, or the like.
  • gNB # 1 detects DCI from gNB # 2 in an uplink slot
  • the DCI may be transmitted from gNB # 2 using a downlink control channel (for example, PDCCH).
  • a downlink control channel for example, PDCCH
  • information (URLLC resource information) related to the URLLC resource scheduled in gNB # 2 is transmitted from gNB # 2 to gNB # using another control channel (for example, uplink control channel (for example, PUCCH: Physical Uplink Control Channel)). 1 may be transmitted.
  • uplink control channel for example, PUCCH: Physical Uplink Control Channel
  • gNB # 2 may transmit the URLLC resource information using a DFT spread OFDM signal (single carrier), or an OFDM signal (multiple (Carrier) may be used for transmission.
  • a DFT spread OFDM signal single carrier
  • an OFDM signal multiple (Carrier) may be used for transmission.
  • wireless communication system Wireless communication system
  • the radio communication method according to each of the above aspects is applied.
  • wireless communication method which concerns on each said aspect may be applied independently, respectively, and may be applied in combination.
  • FIG. 9 is a diagram illustrating an example of a schematic configuration of the wireless communication system according to the present embodiment.
  • carrier aggregation (CA) and / or dual connectivity (DC) in which a plurality of basic frequency blocks (component carriers) each having a system bandwidth (for example, 20 MHz) of the LTE system as one unit are applied.
  • the wireless communication system 1 includes an existing RAT (for example, SUPER 3G, LTE-A (LTE-Advanced), IMT-Advanced or 4G), a new RAT (for example, 5G, FRA (Future Radio Access), NR). (New RAT) or NR +) may operate in cooperation with a non-standalone type (NR NSA).
  • NR NSA non-standalone type
  • the radio communication system 1 shown in FIG. 9 includes a radio base station 11 that forms a macro cell C1, and radio base stations 12a to 12c that are arranged in the macro cell C1 and form a small cell C2 that is narrower than the macro cell C1. .
  • the user terminal 20 is arrange
  • a configuration in which different RATs and / or pneumatics are applied between cells may be adopted.
  • the neurology may be RAT-specific communication parameters (for example, at least one of a subcarrier interval, a symbol length, a CP length, and a TTI length).
  • the user terminal 20 can be connected to both the radio base station 11 and the radio base station 12. It is assumed that the user terminal 20 uses the macro cell C1 and the small cell C2 that use different frequencies simultaneously by CA or DC. In addition, the user terminal 20 can apply CA or DC using a plurality of cells (CC) (for example, two or more CCs). Further, the user terminal can use the license band CC and the unlicensed band CC as a plurality of cells.
  • CC cells
  • the user terminal 20 can perform communication using time division duplex (TDD) or frequency division duplex (FDD) in each cell.
  • TDD time division duplex
  • FDD frequency division duplex
  • the TDD cell and the FDD cell may be referred to as a TDD carrier (frame configuration type 2), an FDD carrier (frame configuration type 1), and the like, respectively.
  • a TTI having a relatively long time length for example, 1 ms
  • a TTI having a short time length also referred to as a short TTI, a short subframe, a slot, a subslot, or a minislot
  • TTIs having different time lengths may be mixed in each cell.
  • Communication can be performed between the user terminal 20 and the radio base station 11 using a carrier (referred to as an existing carrier, a legacy carrier, etc.) in a relatively low frequency band (for example, 2 GHz).
  • a carrier having a frequency band higher than that of the existing carrier (for example, 3.5 GHz, 5 GHz, 30 to 70 GHz, etc.) or the same frequency band as that of the existing carrier is used between the user terminal 20 and the radio base station 12. Also good.
  • the configuration of the frequency band used by each radio base station is not limited to this.
  • a wired connection for example, an optical fiber compliant with CPRI (Common Public Radio Interface), an X2 interface, etc.
  • a wireless connection It can be set as the structure to do.
  • the radio base station 11 and each radio base station 12 are connected to the higher station apparatus 30 and connected to the core network 40 via the higher station apparatus 30.
  • the upper station device 30 includes, for example, an access gateway device, a radio network controller (RNC), a mobility management entity (MME), and the like, but is not limited thereto.
  • RNC radio network controller
  • MME mobility management entity
  • Each radio base station 12 may be connected to the higher station apparatus 30 via the radio base station 11.
  • the radio base station 11 is a radio base station having a relatively wide coverage, and may be called a macro base station, an aggregation node, an eNB (eNodeB), a transmission / reception point, or the like.
  • the radio base station 12 is a radio base station having local coverage, and includes a small base station, a micro base station, a pico base station, a femto base station, a HeNB (Home eNodeB), an RRH (Remote Radio Head), and transmission / reception. It may be called a point.
  • the LTE base station (LTE eNB) shown in FIGS. 1, 2, and 8 may be the radio base station 11 and / or the radio base station 12.
  • the NR base station (NR gNB) may be the radio base station 11 and / or the radio base station 12.
  • a radio base station 10 when the radio base stations 11 and 12 are not distinguished, they are collectively referred to as a radio base station 10.
  • Each user terminal 20 is a terminal compatible with one or more RATs such as at least one of LTE, LTE-A, NR, and 5G, and may include not only a mobile communication terminal but also a fixed communication terminal.
  • RATs such as at least one of LTE, LTE-A, NR, and 5G
  • OFDMA orthogonal frequency division multiple access
  • SC-FDMA single carrier-frequency division multiple access
  • OFDMA is a multi-carrier transmission scheme that performs communication by dividing a frequency band into a plurality of narrow frequency bands (subcarriers) and mapping data to each subcarrier.
  • SC-FDMA is a single-carrier transmission scheme that reduces interference between terminals by dividing the system bandwidth into bands consisting of one or continuous resource blocks for each terminal and using a plurality of terminals with mutually different bands. is there.
  • the uplink and downlink radio access schemes are not limited to these combinations, and OFDMA may be used in the UL.
  • DL channels DL data channels (PDSCH: Physical Downlink Shared Channel, also referred to as DL shared channel) shared by each user terminal 20, broadcast channels (PBCH: Physical Broadcast Channel), L1 / L2 A control channel or the like is used. At least one of user data, higher layer control information, SIB (System Information Block), etc. is transmitted by PDSCH. Also, MIB (Master Information Block) is transmitted by PBCH.
  • PDSCH Physical Downlink Shared Channel
  • PBCH Physical Broadcast Channel
  • SIB System Information Block
  • MIB Master Information Block
  • L1 / L2 control channels are DL control channels (PDCCH (Physical Downlink Control Channel), EPDCCH (Enhanced Physical Downlink Control Channel) or NR-PDCCH), PCFICH (Physical Control Format Indicator Channel), PHICH (Physical Hybrid- ARQ Indicator Channel)).
  • Downlink control information (DCI: Downlink Control Information) including scheduling information of PDSCH and PUSCH is transmitted by PDCCH.
  • the number of OFDM symbols used for PDCCH is transmitted by PCFICH.
  • the EPDCCH is frequency-division multiplexed with the PDSCH, and is used for transmission of DCI and the like as with the PDCCH.
  • PUSCH delivery confirmation information (also referred to as A / N, HARQ-ACK, HARQ-ACK bit, or A / N codebook) can be transmitted by at least one of PHICH, PDCCH, and EPDCCH.
  • a UL data channel (PUSCH: Physical Uplink Shared Channel, also referred to as a UL shared channel or NR-PUSCH) shared by each user terminal 20, a UL control channel (PUCCH: Physical Uplink Control). Channel or NR-PUCCH), random access channel (PRACH: Physical Random Access Channel), etc.
  • PUSCH Physical Uplink Shared Channel
  • NR-PUSCH Physical Uplink Control
  • PRACH Physical Random Access Channel
  • User data and higher layer control information are transmitted by the PUSCH.
  • Uplink control information including at least one of PDSCH delivery confirmation information (A / N, HARQ-ACK), channel state information (CSI), and scheduling request (SR) is PUSCH or PUCCH. Is transmitted.
  • the PRACH can transmit a random access preamble for establishing a connection with a cell.
  • FIG. 10 is a diagram illustrating an example of the overall configuration of the radio base station according to the present embodiment.
  • the radio base station 10 includes a plurality of transmission / reception antennas 101, an amplifier unit 102, a transmission / reception unit 103, a baseband signal processing unit 104, a call processing unit 105, and a transmission path interface 106.
  • each of the transmission / reception antenna 101, the amplifier unit 102, and the transmission / reception unit 103 may be configured to include one or more.
  • User data transmitted from the radio base station 10 to the user terminal 20 via the downlink is input from the higher station apparatus 30 to the baseband signal processing unit 104 via the transmission path interface 106.
  • PDCP Packet Data Convergence Protocol
  • RLC Radio Link Control
  • MAC Medium Access
  • Retransmission control for example, HARQ (Hybrid Automatic Repeat reQuest) processing
  • HARQ Hybrid Automatic Repeat reQuest
  • HARQ Hybrid Automatic Repeat reQuest
  • IFFT inverse fast Fourier transform
  • Transmission processing such as at least one of the processing is performed and transferred to the transmission / reception unit 103.
  • the downlink control signal is also subjected to transmission processing such as channel coding and / or inverse fast Fourier transform, and is transferred to the transmission / reception unit 103.
  • the transmission / reception unit 103 converts the baseband signal output by precoding for each antenna from the baseband signal processing unit 104 to a radio frequency band and transmits the converted signal.
  • the radio frequency signal frequency-converted by the transmission / reception unit 103 is amplified by the amplifier unit 102 and transmitted from the transmission / reception antenna 101.
  • the transmitter / receiver, the transmission / reception circuit, or the transmission / reception device can be configured based on common recognition in the technical field according to the present invention.
  • the transmission / reception part 103 may be comprised as an integral transmission / reception part, and may be comprised from a transmission part and a receiving part.
  • the radio frequency signal received by the transmission / reception antenna 101 is amplified by the amplifier unit 102.
  • the transmission / reception unit 103 receives the UL signal amplified by the amplifier unit 102.
  • the transmission / reception unit 103 converts the frequency of the received signal into a baseband signal and outputs it to the baseband signal processing unit 104.
  • the baseband signal processing unit 104 performs Fast Fourier Transform (FFT) processing, Inverse Discrete Fourier Transform (IDFT) processing, error correction on UL data included in the input UL signal. Decoding, MAC retransmission control reception processing, RLC layer and PDCP layer reception processing are performed and transferred to the upper station apparatus 30 via the transmission path interface 106.
  • the call processing unit 105 performs at least one of call processing such as communication channel setting and release, state management of the radio base station 10, and radio resource management.
  • the transmission path interface 106 transmits and receives signals to and from the higher station apparatus 30 via a predetermined interface.
  • the transmission path interface 106 transmits and receives signals (backhaul signaling) to and from the adjacent radio base station 10 via a backhaul link (for example, an optical fiber compliant with CPRI (Common Public Radio Interface), X2 interface).
  • a backhaul link for example, an optical fiber compliant with CPRI (Common Public Radio Interface), X2 interface).
  • the transmission path interface 106 can constitute a transmission unit and / or a reception unit that transmits and / or receives signals to and from other radio base stations 10.
  • the transmission / reception unit 103 transmits a DL signal (for example, at least one of DCI, DL data, and DL reference signal). Further, the transmission / reception unit 103 receives a UL signal (for example, at least one of UL data, UCI, and UL reference signal).
  • a DL signal for example, at least one of DCI, DL data, and DL reference signal.
  • a UL signal for example, at least one of UL data, UCI, and UL reference signal.
  • the radio base station 10 transmits / receives specific data (for example, URLLC data (at least one of DL data and UL data)) (for example, URLLC base station, first radio base station).
  • specific data for example, URLLC data (at least one of DL data and UL data)
  • URLLC base station for example, URLLC base station, first radio base station.
  • a radio base station e.g., eMBB base station, second radio
  • eMBB base station that transmits / receives data other than the specific data (e.g., eMBB data (at least one of DL data and UL data)).
  • the transmission path interface 106 uses at least one of information on resources set within a predetermined bandwidth (set resource information) and information on resources for specific data (URLLC resource information) using the predetermined bandwidth. May be received from another radio base station 10 (for example, eMBB base station or URLLC base station) or transmitted to the other radio base station (first to third modes).
  • set resource information information on resources set within a predetermined bandwidth
  • URLLC resource information information on resources for specific data
  • the transmission / reception unit 103 may transmit information (setting resource information) related to resources set within a predetermined bandwidth (first mode).
  • the transmission / reception unit 103 may transmit the first downlink control information (DCI) within the first control resource set set within a predetermined bandwidth (second and third modes).
  • DCI downlink control information
  • the transmitter / receiver 103 is within the predetermined bandwidth separately from the first control resource set in which the first downlink control information (DCI) is transmitted from the first radio base station within the predetermined bandwidth.
  • the second downlink control information (DCI) may be transmitted within the set second control resource set (second and third modes).
  • FIG. 11 is a diagram illustrating an example of a functional configuration of the radio base station according to the present embodiment. Note that FIG. 11 mainly shows functional blocks of characteristic portions in the present embodiment, and the radio base station 10 may have other functional blocks necessary for radio communication.
  • the baseband signal processing unit 104 includes a control unit 301, a transmission signal generation unit 302, a mapping unit 303, a reception signal processing unit 304, and a measurement unit 305.
  • Each MAC entity of the present embodiment may be configured by at least one of the control unit 301, the transmission signal generation unit 302, and the reception signal processing unit 304.
  • the control unit 301 controls the entire radio base station 10. For example, the control unit 301 generates a DL signal by the transmission signal generation unit 302, maps a DL signal by the mapping unit 303, receives a UL signal by the reception signal processing unit 304 (for example, demodulation), and performs measurement by the measurement unit 305. Control at least one of
  • control unit 301 controls DL signal scheduling and / or transmission processing (for example, modulation, coding, transport block size (TBS), etc.) based on the UCI fed back from the user terminal 20. To do.
  • TBS transport block size
  • the control unit 301 may apply code block division that divides the TBS into a plurality of CBs to the DL signal.
  • control unit 301 controls scheduling of UL signals based on UCI fed back from the user terminal 20.
  • control unit 301 controls reception processing of the UL signal (for example, at least one of demodulation, decoding, and carrier separation).
  • the control unit 301 controls the reception processing of the LTE UL signal and the NR UL signal using the LTE UL carrier and the NR UL carrier, respectively.
  • control unit 301 transmits and receives from the user terminal 20 the specific data (for example, URLLC data, first data) using resources set within a predetermined bandwidth. At least one of the above may be controlled (first and third modes).
  • control unit 301 may control at least one of rate matching and puncturing of data (for example, eMBB data and second data) regarding resources set within a predetermined bandwidth (first to second). Third aspect).
  • control unit 301 may control transmission of first downlink control information (DCI) within a first control resource set set within a predetermined bandwidth.
  • the control unit 301 may control at least one of transmission and reception of specific data granted by the first DCI (second and third modes).
  • control unit 301 transmits the first downlink control information (DCI) from another radio base station 10 (for example, URLLC base station, first radio base station) within a predetermined bandwidth. Separately from the control resource set, transmission of second downlink control information (DCI) may be controlled within the second control resource set set within the predetermined bandwidth (first mode of the first mode). Dynamic resource allocation, third aspect). In addition, the control unit 301 may control at least one of rate matching, puncturing, transmission stop, and reception stop of data (for example, eMBB data) regarding the resource indicated by the second DCI.
  • DCI downlink control information
  • eMBB data reception stop of data
  • control unit 301 may control monitoring of downlink control information (DCI) transmitted from another radio base station 10 (for example, URLLC base station, first radio base station) within a predetermined bandwidth.
  • DCI downlink control information
  • Good second dynamic resource allocation of the second aspect, third aspect.
  • the control unit 301 can be configured by a controller, a control circuit, or a control device described based on common recognition in the technical field according to the present invention.
  • the transmission signal generation unit 302 Based on an instruction from the control unit 301, the transmission signal generation unit 302 generates a DL signal (including at least one of DL data, DCI, DL reference signal, and control information by higher layer signaling), and a mapping unit 303 May be output.
  • a DL signal including at least one of DL data, DCI, DL reference signal, and control information by higher layer signaling
  • the transmission signal generation unit 302 can be a signal generator, a signal generation circuit, or a signal generation device described based on common recognition in the technical field according to the present invention.
  • the mapping unit 303 maps the DL signal generated by the transmission signal generation unit 302 to a predetermined radio resource based on an instruction from the control unit 301, and outputs the DL signal to the transmission / reception unit 103.
  • the mapping unit 303 can be a mapper, a mapping circuit, or a mapping device described based on common recognition in the technical field according to the present invention.
  • the reception signal processing unit 304 performs reception processing (for example, at least one of demapping, demodulation, decoding, and carrier separation) of the UL signal transmitted from the user terminal 20. Specifically, the reception signal processing unit 304 may output the reception signal and / or the signal after reception processing to the measurement unit 305. The reception signal processing unit 304 performs UCI reception processing based on the UL control channel configuration instructed from the control unit 301.
  • the measurement unit 305 measures the UL channel quality based on, for example, the reception power (for example, RSRP (Reference Signal Received Power)) and / or the reception quality (for example, RSRQ (Reference Signal Received Quality)) of the UL reference signal. May be.
  • the measurement result may be output to the control unit 301.
  • FIG. 12 is a diagram illustrating an example of the overall configuration of the user terminal according to the present embodiment.
  • the user terminal 20 includes a plurality of transmission / reception antennas 201 for MIMO transmission, an amplifier unit 202, a transmission / reception unit 203, a baseband signal processing unit 204, and an application unit 205.
  • the user terminal 20 supports a plurality of RATs (for example, LTE and NR).
  • the radio frequency signals received by the plurality of transmission / reception antennas 201 are each amplified by the amplifier unit 202.
  • Each transmitting / receiving unit 203 receives the DL signal amplified by the amplifier unit 202.
  • the transmission / reception unit 203 converts the frequency of the received signal into a baseband signal and outputs it to the baseband signal processing unit 204.
  • the baseband signal processing unit 204 performs at least one of FFT processing, error correction decoding, retransmission control reception processing, and the like on the input baseband signal.
  • the DL data is transferred to the application unit 205.
  • the application unit 205 performs processing related to layers higher than the physical layer and the MAC layer.
  • UL data is input from the application unit 205 to the baseband signal processing unit 204.
  • the baseband signal processing unit 204 performs at least one of retransmission control processing (for example, HARQ processing), channel coding, rate matching, puncturing, discrete Fourier transform (DFT) processing, IFFT processing, and the like.
  • the data is transferred to each transmitting / receiving unit 203.
  • retransmission control processing for example, HARQ processing
  • DFT discrete Fourier transform
  • IFFT processing discrete Fourier transform
  • UCI for example, at least one of DL signal A / N, channel state information (CSI), scheduling request (SR), etc.
  • CSI channel state information
  • SR scheduling request
  • the transmission / reception unit 203 converts the baseband signal output from the baseband signal processing unit 204 into a radio frequency band and transmits it.
  • the radio frequency signal frequency-converted by the transmission / reception unit 203 is amplified by the amplifier unit 202 and transmitted from the transmission / reception antenna 201.
  • the transmission / reception unit 203 receives a DL signal (for example, at least one of DCI, DL data, and DL reference signal).
  • the transmission / reception unit 203 transmits an UL signal (for example, at least one of UL data, UCI, and UL reference signal).
  • the user terminal 20 transmits / receives specific data (for example, URLLC data (at least one of DL data and UL data)) (also referred to as URLLC UE, first user terminal, etc.).
  • specific data for example, URLLC data (at least one of DL data and UL data)
  • URLLC UE also referred to as URLLC UE, first user terminal, etc.
  • a user terminal eg, eMBB UE, second user terminal, etc.
  • data other than the specific data eg, eMBB data (at least one of DL data and UL data)
  • the transmission / reception unit 203 may receive information (set resource information) related to resources set within a predetermined bandwidth (first mode).
  • the transmission / reception unit 203 transmits the radio base station 10 (URLLC base station or first radio base station) or another radio base station 10 (eMBB base station or second radio base station) that uses the predetermined bandwidth. ), Information on the resource may be resinated.
  • the transmission / reception unit 203 may receive the first downlink control information (DCI) within the first control resource set set within the predetermined bandwidth (second mode).
  • DCI downlink control information
  • the transmission / reception unit 203 is within the predetermined bandwidth separately from the first control resource set in which the first downlink control information (DCI) is transmitted from the first radio base station within the predetermined bandwidth.
  • the second downlink control information (DCI) may be received within the set second control resource set (second mode).
  • the transmission / reception unit 203 can be a transmitter / receiver, a transmission / reception circuit, or a transmission / reception device described based on common recognition in the technical field according to the present invention. Further, the transmission / reception unit 203 may be configured as an integral transmission / reception unit, or may be configured from a transmission unit and a reception unit.
  • FIG. 13 is a diagram illustrating an example of a functional configuration of the user terminal according to the present embodiment. Note that FIG. 13 mainly shows functional blocks of characteristic portions in the present embodiment, and the user terminal 20 may also have other functional blocks necessary for wireless communication.
  • Each MAC entity of the present embodiment may be configured by at least one of a control unit 401, a transmission signal generation unit 402, and a reception signal processing unit 404.
  • the baseband signal processing unit 204 included in the user terminal 20 includes a control unit 401, a transmission signal generation unit 402, a mapping unit 403, a reception signal processing unit 404, and a measurement unit 405. I have.
  • the control unit 401 controls the entire user terminal 20.
  • the control unit 401 controls at least one of generation of a UL signal by the transmission signal generation unit 402, mapping of the UL signal by the mapping unit 403, reception processing of the DL signal by the reception signal processing unit 404, and measurement by the measurement unit 405. To do.
  • control unit 401 controls DL signal reception processing (for example, demodulation, decoding, separation for each carrier, etc.) by the reception signal processing unit 404 based on DCI (DL assignment).
  • DL signal reception processing for example, demodulation, decoding, separation for each carrier, etc.
  • DCI DL assignment
  • control unit 401 controls generation and transmission processing (for example, encoding, modulation, mapping, etc.) of UL signals based on DCI (UL grant).
  • control unit 401 receives specific data from a radio base station 10 (for example, a URLLC base station or a first radio base station) using resources set within a predetermined bandwidth, and the radio At least one of transmissions to the base station 10 may be controlled (first and third modes).
  • a radio base station 10 for example, a URLLC base station or a first radio base station
  • the radio At least one of transmissions to the base station 10 may be controlled (first and third modes).
  • the resource to be set may be a blank resource in the second radio base station that uses the predetermined bandwidth.
  • the control unit 401 also includes at least data (for example, eMBB data) from the radio base station 10 (eMBB base station or second radio base station) that uses the predetermined bandwidth and data for the radio base station 10. At least one of rate matching, puncturing, transmission stop and reception stop for the set resource may be controlled (first to third modes).
  • eMBB data for example, eMBB data
  • eMBB base station or second radio base station uses the predetermined bandwidth and data for the radio base station 10.
  • At least one of rate matching, puncturing, transmission stop and reception stop for the set resource may be controlled (first to third modes).
  • control unit 401 controls the monitoring of the first downlink control information (DCI) transmitted from the first radio base station within the first control resource set set within a predetermined bandwidth. It is also possible (second and third aspects). Further, the control unit 401 receives specific data (for example, URLLC data) from the radio base station 10 (URLLC base station or first radio base station) based on the first DCI, and the radio base At least one of transmissions to the station 10 may be controlled (second and third modes).
  • specific data for example, URLLC data
  • control unit 401 controls monitoring of the second downlink control information (DCI) transmitted from the second radio base station within the second control resource set set within the predetermined bandwidth. (Second and third modes). Based on the first DCI, the control unit 401 sends the specific data using the resource indicated by the second DCI from the radio base station 10 (URLLC base station or the first radio base station). At least one of reception and transmission to the radio base station 10 may be controlled (second and third modes).
  • DCI downlink control information
  • Second downlink control information (DCI) transmitted from the radio base station 10 (eMBB base station or second radio base station) within the second control resource set set within the predetermined bandwidth is the other
  • the radio base station 10 URLLC base station or first radio base station
  • the first DCI is used for scheduling the specific data for at least a part of the resource indicated by the second DCI. (Second and third modes).
  • the first DCI transmitted from the radio base station 10 (URLLC base station or first radio base station) in the first control resource set is used as another radio base station 10 that uses the predetermined bandwidth.
  • the (eMBB base station or the second radio base station) receives the resource indicated by the first DCI may be used as a blank resource in the second radio base station (second and third radio base stations) Embodiment).
  • the control unit 401 can be configured by a controller, a control circuit, or a control device described based on common recognition in the technical field according to the present invention.
  • the transmission signal generation unit 402 Based on an instruction from the control unit 401, the transmission signal generation unit 402 generates UL signal and DL signal acknowledgment information (eg, encoding, rate matching, puncturing, modulation, etc.) and outputs the information to the mapping unit 403. To do.
  • the transmission signal generation unit 402 may be a signal generator, a signal generation circuit, or a signal generation device described based on common recognition in the technical field according to the present invention.
  • the mapping unit 403 Based on an instruction from the control unit 401, the mapping unit 403 maps the UL signal and DL signal acknowledgment information generated by the transmission signal generation unit 402 to radio resources, and outputs the radio resource to the transmission / reception unit 203.
  • the mapping unit 403 may be a mapper, a mapping circuit, or a mapping device described based on common recognition in the technical field according to the present invention.
  • the received signal processing unit 404 performs DL signal reception processing (for example, demapping, demodulation, decoding, etc.). For example, the received signal processing unit 404 may perform decoding processing in units of CBs according to instructions from the control unit 401 and output the decoding results of each CB to the control unit 401.
  • DL signal reception processing for example, demapping, demodulation, decoding, etc.
  • the received signal processing unit 404 may perform decoding processing in units of CBs according to instructions from the control unit 401 and output the decoding results of each CB to the control unit 401.
  • the reception signal processing unit 404 outputs information received from the radio base station 10 to the control unit 401.
  • the received signal processing unit 404 sends, for example, broadcast information, system information, upper layer control information by upper layer signaling such as RRC signaling, L1 / L2 control information (for example, UL grant, DL assignment), and the like to the control unit 401. Output.
  • the received signal processing unit 404 can be configured by a signal processor, a signal processing circuit, or a signal processing device described based on common recognition in the technical field according to the present invention. Further, the reception signal processing unit 404 can constitute a reception unit according to the present invention.
  • the measurement unit 405 measures the channel state based on a reference signal (for example, CSI-RS) from the radio base station 10 and outputs the measurement result to the control unit 401. Note that the channel state measurement may be performed for each CC.
  • a reference signal for example, CSI-RS
  • the measuring unit 405 can be composed of a signal processor, a signal processing circuit or a signal processing device, and a measuring device, a measurement circuit or a measuring device which are explained based on common recognition in the technical field according to the present invention.
  • each functional block is realized by any combination of at least one of hardware and software.
  • the method for realizing each functional block is not particularly limited. That is, each functional block may be realized by using one device physically or logically coupled, or two or more devices physically or logically separated may be directly or indirectly (for example, (Using wired, wireless, etc.) and may be implemented using these multiple devices.
  • a wireless base station, a user terminal, and the like may function as a computer that performs processing of the wireless communication method of the present disclosure.
  • FIG. 14 is a diagram illustrating an example of a hardware configuration of a radio base station and a user terminal according to an embodiment.
  • the wireless base station 10 and the user terminal 20 described above may be physically configured as a computer device including a processor 1001, a memory 1002, a storage 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, and the like. Good.
  • the term “apparatus” can be read as a circuit, a device, a unit, or the like.
  • the hardware configurations of the radio base station 10 and the user terminal 20 may be configured to include one or a plurality of each device illustrated in the figure, or may be configured not to include some devices.
  • processor 1001 may be implemented by one or more chips.
  • Each function in the radio base station 10 and the user terminal 20 is calculated by causing the processor 1001 to perform calculations by reading predetermined software (programs) on hardware such as the processor 1001 and the memory 1002, for example, via the communication device 1004. This is realized by controlling communication or controlling at least one of reading and writing of data in the memory 1002 and the storage 1003.
  • the processor 1001 controls the entire computer by operating an operating system, for example.
  • the processor 1001 may be configured by a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic device, a register, and the like.
  • CPU central processing unit
  • the baseband signal processing unit 104 (204) and the call processing unit 105 described above may be realized by the processor 1001.
  • the processor 1001 reads a program (program code), a software module, data, and the like from at least one of the storage 1003 and the communication device 1004 to the memory 1002, and executes various processes according to these.
  • a program program code
  • the control unit 401 of the user terminal 20 may be realized by a control program stored in the memory 1002 and operating in the processor 1001, and may be realized similarly for other functional blocks.
  • the memory 1002 is a computer-readable recording medium such as a ROM (Read Only Memory), an EPROM (Erasable Programmable ROM), an EEPROM (Electrically EPROM), a RAM (Random Access Memory), or any other suitable storage medium. It may be configured by one.
  • the memory 1002 may be called a register, a cache, a main memory (main storage device), or the like.
  • the memory 1002 can store a program (program code), a software module, and the like that can be executed to implement the wireless communication method according to an embodiment of the present disclosure.
  • the storage 1003 is a computer-readable recording medium such as a flexible disk, a floppy (registered trademark) disk, a magneto-optical disk (for example, a compact disk (CD-ROM (Compact Disc ROM)), a digital versatile disk, Blu-ray® disk), removable disk, hard disk drive, smart card, flash memory device (eg, card, stick, key drive), magnetic stripe, database, server, or other suitable storage medium It may be constituted by.
  • the storage 1003 may be referred to as an auxiliary storage device.
  • the communication device 1004 is hardware (transmission / reception device) for performing communication between computers via at least one of a wired network and a wireless network, and is also referred to as a network device, a network controller, a network card, a communication module, or the like.
  • the communication device 1004 includes, for example, a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc. in order to realize at least one of frequency division duplex (FDD) and time division duplex (TDD). It may be constituted by.
  • FDD frequency division duplex
  • TDD time division duplex
  • the transmission / reception antenna 101 (201), the amplifier unit 102 (202), the transmission / reception unit 103 (203), the transmission path interface 106, and the like described above may be realized by the communication device 1004.
  • the input device 1005 is an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that accepts an input from the outside.
  • the output device 1006 is an output device (for example, a display, a speaker, an LED (Light Emitting Diode) lamp, etc.) that performs output to the outside.
  • the input device 1005 and the output device 1006 may have an integrated configuration (for example, a touch panel).
  • the devices such as the processor 1001 and the memory 1002 are connected by a bus 1007 for communicating information.
  • the bus 1007 may be configured using a single bus, or may be configured using a different bus for each device.
  • the radio base station 10 and the user terminal 20 include a microprocessor, a digital signal processor (DSP), an ASIC (Application Specific Integrated Circuit), a PLD (Programmable Logic Device), an FPGA (Field Programmable Gate Array), and the like. It may be configured including hardware, and a part or all of each functional block may be realized using the hardware. For example, the processor 1001 may be implemented using at least one of these hardware.
  • DSP digital signal processor
  • ASIC Application Specific Integrated Circuit
  • PLD Programmable Logic Device
  • FPGA Field Programmable Gate Array
  • the terms described in the present disclosure and the terms necessary for understanding the present disclosure may be replaced with terms having the same or similar meaning.
  • the signal may be a message.
  • the reference signal may be abbreviated as RS (Reference Signal), and may be referred to as a pilot, a pilot signal, or the like depending on an applied standard.
  • a component carrier CC: Component Carrier
  • CC Component Carrier
  • the radio frame may be configured by one or a plurality of periods (frames) in the time domain.
  • Each of the one or more periods (frames) constituting the radio frame may be referred to as a subframe.
  • a subframe may be composed of one or more slots in the time domain.
  • the subframe may have a fixed length of time (eg, 1 ms) that does not depend on numerology.
  • the neurology may be a communication parameter applied to at least one of transmission and reception of a certain signal or channel.
  • SCS SubCarrier Spacing
  • bandwidth For example, subcarrier spacing (SCS: SubCarrier Spacing), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI: Transmission Time Interval), number of symbols per TTI, radio frame configuration, transceiver in frequency domain
  • TTI Transmission Time Interval
  • number of symbols per TTI radio frame configuration
  • transceiver in frequency domain It may indicate at least one of a specific filtering process to be performed and a specific windowing process to be performed by the transceiver in the time domain.
  • a slot may be configured with one or a plurality of symbols (OFDM (Orthogonal Frequency Division Multiplexing) symbol, SC-FDMA (Single Carrier Frequency Division Multiple Access) symbol, etc.) in the time domain. Further, the slot may be a time unit based on the numerology.
  • OFDM Orthogonal Frequency Division Multiplexing
  • SC-FDMA Single Carrier Frequency Division Multiple Access
  • the slot may include a plurality of mini slots. Each minislot may be configured with one or more symbols in the time domain. The minislot may also be called a subslot. A mini-slot may be composed of fewer symbols than slots.
  • PDSCH (or PUSCH) transmitted in units of time larger than a minislot may be referred to as PDSCH (PUSCH) mapping type A.
  • PDSCH (or PUSCH) transmitted using a minislot may be referred to as a PDSCH (PUSCH) mapping type B.
  • Radio frame, subframe, slot, minislot, and symbol all represent time units when transmitting signals. Different names may be used for the radio frame, subframe, slot, minislot, and symbol.
  • one subframe may be called a transmission time interval (TTI)
  • TTI transmission time interval
  • 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 the TTI may be a subframe (1 ms) in the existing LTE, a period shorter than 1 ms (for example, 1-13 symbols), or a period longer than 1 ms. It may be.
  • a unit representing TTI may be called a slot, a minislot, or the like instead of a subframe.
  • TTI means, for example, a minimum time unit for scheduling in wireless communication.
  • a radio base station performs scheduling for assigning radio resources (frequency bandwidth, transmission power, etc. that can be used in each user terminal) to each user terminal in units of TTI.
  • the definition of TTI is not limited to this.
  • the TTI may be a transmission time unit such as a channel-encoded data packet (transport block), a code block, or a code word, or may be a processing unit such as scheduling or link adaptation.
  • a time interval for example, the number of symbols
  • a transport block, a code block, a code word, etc. may be shorter than the TTI.
  • one or more TTIs may be the minimum scheduling unit. Further, the number of slots (the number of mini-slots) constituting the minimum time unit of the scheduling may be controlled.
  • a TTI having a time length of 1 ms may be called a normal TTI (TTI in LTE Rel. 8-12), a normal TTI, a long TTI, a normal subframe, a normal subframe, or a long subframe.
  • a TTI shorter than a normal TTI may be called a shortened TTI, a short TTI, a partial TTI (partial or fractional TTI), a shortened subframe, a short subframe, a minislot, or a subslot.
  • a long TTI (eg, normal TTI, subframe, etc.) may be read as a TTI having a time length exceeding 1 ms, and a short TTI (eg, shortened TTI) is less than the TTI length of the long TTI and 1 ms. It may be replaced with a TTI having the above TTI length.
  • a resource block (RB) is a resource allocation unit in the time domain and the frequency domain, and may include one or a plurality of continuous subcarriers (subcarriers) in the frequency domain.
  • the RB may include one or a plurality of symbols in the time domain, and may have a length of 1 slot, 1 mini slot, 1 subframe, or 1 TTI.
  • One TTI and one subframe may each be composed of one or a plurality of resource blocks.
  • One or more RBs include physical resource blocks (PRB), sub-carrier groups (SCG), resource element groups (REG), PRB pairs, RB pairs, etc. May be called.
  • PRB physical resource blocks
  • SCG sub-carrier groups
  • REG resource element groups
  • PRB pairs RB pairs, etc. May be called.
  • the resource block may be configured by one or a plurality of resource elements (RE: Resource Element).
  • RE Resource Element
  • 1RE may be a radio resource region of 1 subcarrier and 1 symbol.
  • the structure of the above-described radio frame, subframe, slot, minislot, symbol, etc. is merely an example.
  • the number of subframes included in a radio frame, the number of slots per subframe or radio frame, the number of minislots included in the slot, the number of symbols and RBs included in the slot or minislot, and the RB The number of subcarriers, the number of symbols in the TTI, the symbol length, the cyclic prefix (CP) length, and the like can be variously changed.
  • information, parameters, and the like described in the present disclosure may be expressed using absolute values, may be expressed using relative values from predetermined values, or may be expressed using other corresponding information. May be represented.
  • the radio resource may be indicated by a predetermined index.
  • the names used for parameters and the like in this disclosure are not limited names in any way.
  • various channels PUCCH (Physical Uplink Control Channel), PDCCH (Physical Downlink Control Channel), etc.
  • information elements can be identified by any suitable name, so the various channels and information elements assigned to them.
  • the name is not limited in any way.
  • the information, signals, etc. described in this disclosure may be represented using any of a variety of different technologies.
  • data, commands, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description are voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any of these May be represented by a combination of
  • information, signals, and the like can be output from the upper layer to at least one of the lower layer and the lower layer to the upper layer.
  • Information, signals, and the like may be input / output via a plurality of network nodes.
  • the input / output information, signals, etc. may be stored in a specific location (for example, a memory) or may be managed using a management table. Input / output information, signals, and the like can be overwritten, updated, or added. The output information, signals, etc. may be deleted. Input information, signals, and the like may be transmitted to other devices.
  • information notification includes physical layer signaling (eg, downlink control information (DCI), uplink control information (UCI)), upper layer signaling (eg, RRC (Radio Resource Control) signaling), It may be implemented by broadcast information (Master Information Block (MIB), System Information Block (SIB), etc.), MAC (Medium Access Control) signaling), other signals, or a combination thereof.
  • DCI downlink control information
  • UCI uplink control information
  • RRC Radio Resource Control
  • MIB Master Information Block
  • SIB System Information Block
  • MAC Medium Access Control
  • the physical layer signaling may be referred to as L1 / L2 (Layer 1 / Layer 2) control information (L1 / L2 control signal), L1 control information (L1 control signal), or the like.
  • the RRC signaling may be referred to as an RRC message, and may be, for example, an RRC connection setup (RRCConnectionSetup) message, an RRC connection reconfiguration (RRCConnectionReconfiguration) message, or the like.
  • the MAC signaling may be notified using, for example, a MAC control element (MAC CE (Control Element)).
  • notification of predetermined information is not limited to explicit notification, but implicitly (for example, by not performing notification of the predetermined information or other information) May be performed).
  • the determination may be performed by a value represented by 1 bit (0 or 1), or may be performed by a boolean value represented by true or false.
  • the comparison may be performed by numerical comparison (for example, comparison with a predetermined value).
  • software, instructions, information, etc. may be transmitted / received via a transmission medium.
  • the software uses websites using at least one of wired technology (coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), etc.) and wireless technology (infrared, microwave, etc.) When transmitted from a server or other remote source, at least one of these wired and wireless technologies is included within the definition of a transmission medium.
  • system and “network” as used in this disclosure may be used interchangeably.
  • base station BS
  • radio base station fixed station
  • NodeB NodeB
  • eNodeB eNodeB
  • gNodeB gNodeB
  • a base station may also be called terms such as a macro cell, a small cell, a femto cell, and a pico cell.
  • the base station can accommodate one or a plurality of (for example, three) cells (also called sectors). If the base station accommodates multiple cells, the entire coverage area of the base station can be partitioned into multiple smaller areas, each smaller area being a base station subsystem (eg, an indoor small base station (RRH: Remote Radio Head)) can also provide communication services.
  • a base station subsystem eg, an indoor small base station (RRH: Remote Radio Head)
  • RRH Remote Radio Head
  • the terms “cell” or “sector” refer to part or all of the coverage area of at least one of a base station and a base station subsystem that provides communication services in this coverage.
  • MS mobile station
  • UE user equipment
  • Mobile station subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal , Handset, user agent, mobile client, client or some other suitable term.
  • At least one of the base station and the mobile station may be referred to as a transmission device, a reception device, or the like.
  • the base station and the mobile station may be a device mounted on the mobile body, the mobile body itself, or the like.
  • the moving body may be a vehicle (for example, a car, an airplane, etc.), an unattended moving body (for example, a drone, an autonomous driving vehicle, etc.), or a robot (manned or unmanned).
  • at least one of the base station and the mobile station includes a device that does not necessarily move during a communication operation.
  • the radio base station in the present disclosure may be replaced with a user terminal.
  • communication between a radio base station and a user terminal is replaced with communication between a plurality of user terminals (for example, D2D (Device-to-Device), V2X (Vehicle-to-Everything), etc. may be called))
  • a plurality of user terminals for example, D2D (Device-to-Device), V2X (Vehicle-to-Everything), etc.
  • the user terminal 20 may have a function that the wireless base station 10 has.
  • words such as “up” and “down” may be read as words corresponding to communication between terminals (for example, “side”).
  • an uplink channel, a downlink channel, etc. may be read as a side channel.
  • the user terminal in the present disclosure may be replaced with a radio base station.
  • the wireless base station 10 may have a function that the user terminal 20 has.
  • the operation performed by the base station may be performed by the upper node in some cases.
  • various operations performed for communication with a terminal may include a base station and one or more network nodes other than the base station (for example, It is obvious that this can be done by MME (Mobility Management Entity), S-GW (Serving-Gateway), etc., but not limited thereto) or a combination thereof.
  • MME Mobility Management Entity
  • S-GW Serving-Gateway
  • each aspect / embodiment described in the present disclosure may be used alone, in combination, or may be switched according to execution.
  • the order of processing procedures, sequences, flowcharts, and the like of each aspect / embodiment described in the present disclosure may be changed as long as there is no contradiction.
  • the methods described in this disclosure present elements of the various steps in an exemplary order and are not limited to the specific order presented.
  • Each aspect / embodiment described in this disclosure includes LTE (Long Term Evolution), LTE-A (LTE-Advanced), LTE-B (LTE-Beyond), SUPER 3G, IMT-Advanced, 4G (4th generation mobile) communication system), 5G (5th generation mobile communication system), FRA (Future Radio Access), New-RAT (Radio Access Technology), NR (New Radio), NX (New radio access), FX (Future generation radio access), GSM (registered trademark) (Global System for Mobile communications), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802 .20, UWB (Ultra-WideBand), Bluetooth (registered trademark) ), A system using other appropriate wireless communication methods, a next-generation system extended based on these, and the like.
  • a plurality of systems may be combined and applied (for example, a combination of LTE or LTE
  • the phrase“ based on ”does not mean“ based only on, ”unless expressly specified otherwise.
  • the phrase “based on” means both “based only on” and “based at least on.”
  • any reference to elements using designations such as “first”, “second”, etc. as used in this disclosure does not generally limit the amount or order of those elements. These designations can be used in this disclosure as a convenient way to distinguish between two or more elements. Thus, reference to the first and second elements does not mean that only two elements can be employed or that the first element must precede the second element in some way.
  • determining may encompass a wide variety of actions. For example, “determination (decision)” includes determination, calculation, calculation, processing, derivation, investigating, looking up (eg, table, (Searching in a database or another data structure), ascertaining, etc. may be considered to be “determining”.
  • determination (decision) includes receiving (for example, receiving information), transmitting (for example, transmitting information), input (input), output (output), access ( accessing) (e.g., accessing data in memory), etc. may be considered to be “determining”.
  • determination is considered to be “determination (resolving)”, “selecting”, “choosing”, “establishing”, “comparing”, etc. Also good. That is, “determination (determination)” may be regarded as “determination (determination)” of some operation.
  • the “maximum transmission power” described in this disclosure may mean the maximum value of the transmission power, the nominal maximum transmission power (the nominal UE maximum transmit power), or the rated maximum transmission power (the rated UE maximum transmit power).
  • connection is any direct or indirect connection or coupling between two or more elements. And may include the presence of one or more intermediate elements between two elements “connected” or “coupled” to each other.
  • the coupling or connection between the elements may be physical, logical, or a combination thereof. For example, “connection” may be read as “access”.
  • radio frequency domain microwave It can be considered to be “connected” or “coupled” to each other using electromagnetic energy having a wavelength in the region, light (both visible and invisible) region, and the like.

Landscapes

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

Abstract

Selon la présente invention, cet équipement utilisateur comprend : une unité de réception servant à recevoir des informations concernant des ressources à régler dans une largeur de bande prédéterminée ; et une unité de commande servant à commander la réception de données spécifiques provenant d'une première station de base radio et/ou la transmission à la première station de base radio par l'utilisation des ressources définies. Par conséquent, des interférences entre de multiples cellules fournissant différents services peuvent être supprimées.
PCT/JP2018/015626 2018-04-13 2018-04-13 Équipement utilisateur et station de base radio WO2019198249A1 (fr)

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Publication number Priority date Publication date Assignee Title
WO2021095181A1 (fr) * 2019-11-13 2021-05-20 株式会社Ｎｔｔドコモ Terminal et procédé de communication sans fil
CN114616920A (zh) * 2019-11-08 2022-06-10 株式会社Ntt都科摩 终端和通信方法
WO2022154067A1 (fr) * 2021-01-14 2022-07-21 株式会社デンソー Terminal, station de base et procédé de communication sans fil

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WO2012096049A1 (fr) * 2011-01-14 2012-07-19 住友電気工業株式会社 Dispositif de station de base, dispositif terminal, et système et procédé de communication sans fil
WO2017131065A1 (fr) * 2016-01-29 2017-08-03 株式会社Ｎｔｔドコモ Terminal d'utilisateur, station de base sans fil, et procédé de communication sans fil

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WO2012096049A1 (fr) * 2011-01-14 2012-07-19 住友電気工業株式会社 Dispositif de station de base, dispositif terminal, et système et procédé de communication sans fil
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114616920A (zh) * 2019-11-08 2022-06-10 株式会社Ntt都科摩 终端和通信方法
WO2021095181A1 (fr) * 2019-11-13 2021-05-20 株式会社Ｎｔｔドコモ Terminal et procédé de communication sans fil
WO2022154067A1 (fr) * 2021-01-14 2022-07-21 株式会社デンソー Terminal, station de base et procédé de communication sans fil

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