WO2025017840A1 - 端末及び通信方法 - Google Patents

端末及び通信方法 Download PDF

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Publication number
WO2025017840A1
WO2025017840A1 PCT/JP2023/026302 JP2023026302W WO2025017840A1 WO 2025017840 A1 WO2025017840 A1 WO 2025017840A1 JP 2023026302 W JP2023026302 W JP 2023026302W WO 2025017840 A1 WO2025017840 A1 WO 2025017840A1
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WIPO (PCT)
Prior art keywords
mno
base station
terminal
transmission
information
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PCT/JP2023/026302
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English (en)
French (fr)
Japanese (ja)
Inventor
尚哉 芝池
守 奥村
真由子 岡野
翔平 吉岡
聡 永田
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NTT Docomo Inc
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NTT Docomo Inc
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Filing date
Publication date
Application filed by NTT Docomo Inc filed Critical NTT Docomo Inc
Priority to JP2025533772A priority Critical patent/JPWO2025017840A1/ja
Priority to PCT/JP2023/026302 priority patent/WO2025017840A1/ja
Priority to CN202380097952.7A priority patent/CN121176150A/zh
Publication of WO2025017840A1 publication Critical patent/WO2025017840A1/ja
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/14—Spectrum sharing arrangements between different networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H04W72/1268—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices
    • H04W88/10—Access point devices adapted for operation in multiple networks, e.g. multi-mode access points

Definitions

  • the present invention relates to a terminal and a communication method in a wireless communication system.
  • 3GPP registered trademark
  • 3rd Generation Partnership Project 3rd Generation Partnership Project
  • 5G Fifth Generation Partnership Project
  • NR New Radio
  • 5G various wireless technologies and network architectures are being studied to meet the requirements of achieving a throughput of 10 Gbps or more while keeping latency in wireless sections to 1 ms or less (for example, Non-Patent Document 1 and Non-Patent Document 2).
  • requirements are being considered for the next generation, 6G.
  • such requirements include ultra broadband communication, mission critical communication, ultra massive connection, universal coverage, intelligent connection, ubiquitous sensing, etc.
  • the new concepts that are being pursued are extensible (i.e., to be able to be used more effectively in the future), customizable (i.e., to be easier to operate), and sustainable (i.e., to reduce costs and have a more robust structure).
  • TRPs transmission reception points
  • the present invention has been made in consideration of the above points, and aims to share a frequency band among multiple TRPs (Transmission reception points) in a wireless communication system.
  • a terminal has a receiver that receives multiple TA (Timing Advance) commands corresponding to multiple MNOs (Mobile network operators) that share a frequency band, a transmitter that transmits the TA commands corresponding to MNOs other than the connected MNO to a base station of the connected MNO, and a controller that performs transmission in the frequency band based on the scheduling received from the base station.
  • TA Triming Advance
  • MNOs Mobile network operators
  • the disclosed technology allows frequency bands to be shared among multiple TRPs (Transmission reception points) in a wireless communication system.
  • FIG. 1 is a diagram illustrating an example of a configuration of a wireless communication system according to an embodiment of the present invention.
  • FIG. 10 is a diagram for explaining an example of sharing according to an embodiment of the present invention.
  • FIG. 1 is a diagram for explaining an example (1) of frequency band sharing in an embodiment of the present invention.
  • FIG. 13 is a diagram for explaining an example (2) of frequency band sharing in an embodiment of the present invention.
  • FIG. 11 is a diagram for explaining an example (3) of frequency band sharing in an embodiment of the present invention.
  • FIG. 2 is a diagram for explaining an example of sharing by frequency division multiplexing in an embodiment of the present invention.
  • 1 is a diagram for explaining an example of sharing by time division multiplexing in an embodiment of the present invention.
  • FIG. 2 is a diagram for explaining an example (1) of a site arrangement according to an embodiment of the present invention.
  • FIG. 11 is a diagram for explaining an example (2) of a site arrangement according to an embodiment of the present invention.
  • FIG. 1 is a diagram for explaining an example (1) of communication in an embodiment of the present invention.
  • FIG. 11 is a diagram for explaining an example (2) of communication in an embodiment of the present invention.
  • FIG. 11 is a diagram for explaining an example (3) of communication in an embodiment of the present invention.
  • FIG. 11 is a diagram for explaining an example (4) of communication in an embodiment of the present invention.
  • FIG. 2 is a diagram illustrating an example of a functional configuration of a base station 10 according to an embodiment of the present invention.
  • FIG. 2 is a diagram illustrating an example of a functional configuration of a terminal 20 according to an embodiment of the present invention.
  • 2 is a diagram illustrating an example of a hardware configuration of a base station 10 or a terminal 20 according to an embodiment of the present invention.
  • FIG. 2 is a diagram showing an example of the configuration of a vehicle 2001 according to an embodiment of the present invention.
  • LTE Long Term Evolution
  • NR NR
  • SS Synchronization signal
  • PSS Primary SS
  • SSS Secondary SS
  • PBCH Physical broadcast channel
  • PRACH Physical random access channel
  • PDCCH Physical Downlink Control Channel
  • PDSCH Physical Downlink Shared Channel
  • PUCCH Physical Uplink Control Channel
  • PUSCH Physical Uplink Shared Channel
  • NR corresponds to NR-SS, NR-PSS, NR-SSS, NR-PBCH, NR-PRACH, etc.
  • NR- even if a signal is used in NR, it is not necessarily specified as "NR-".
  • the duplex method may be a TDD (Time Division Duplex) method, an FDD (Frequency Division Duplex) method, or another method (e.g., Flexible Duplex, etc.).
  • TDD Time Division Duplex
  • FDD Frequency Division Duplex
  • another method e.g., Flexible Duplex, etc.
  • radio parameters and the like when radio parameters and the like are “configured,” it may mean that predetermined values are pre-configured, or that radio parameters notified from the base station 10 or the terminal 20 are configured.
  • FIG. 1 is a diagram showing an example of the configuration of a wireless communication system in an embodiment of the present invention.
  • the wireless communication system in the embodiment of the present invention includes a base station 10 and a terminal 20.
  • FIG. 1 shows one base station 10 and one terminal 20, this is an example, and there may be multiple of each.
  • the base station 10 is a communication device that provides one or more cells and performs wireless communication with the terminal 20.
  • the physical resources of a wireless signal are defined in the time domain and the frequency domain, and the time domain may be defined by the number of OFDM (Orthogonal Frequency Division Multiplexing) symbols, and the frequency domain may be defined by the number of subcarriers or the number of resource blocks.
  • the base station 10 transmits a synchronization signal and system information to the terminal 20.
  • the synchronization signal is, for example, NR-PSS and NR-SSS.
  • the system information is, for example, transmitted by NR-PBCH and is also called broadcast information.
  • the synchronization signal and system information may be called SSB (SS/PBCH block). As shown in FIG.
  • the base station 10 transmits a control signal or data to the terminal 20 in DL (Downlink) and receives a control signal or data from the terminal 20 in UL (Uplink). Both the base station 10 and the terminal 20 are capable of transmitting and receiving signals by performing beamforming. In addition, both the base station 10 and the terminal 20 can apply MIMO (Multiple Input Multiple Output) communication to DL or UL. In addition, both the base station 10 and the terminal 20 may communicate via a secondary cell (SCell: Secondary Cell) and a primary cell (PCell: Primary Cell) using CA (Carrier Aggregation). Furthermore, the terminal 20 may communicate via a primary cell of the base station 10 and a primary secondary cell group cell (PSCell: Primary SCG Cell) of another base station 10 using DC (Dual Connectivity).
  • SCell Secondary Cell
  • PCell Primary Cell
  • CA Carrier Aggregation
  • the terminal 20 may communicate via a primary cell of the base station 10 and a primary secondary cell group cell (PSCell: Primary SCG Cell) of another base station 10
  • the terminal 20 is a communication device equipped with a wireless communication function, such as a smartphone, a mobile phone, a tablet, a wearable terminal, or a communication module for M2M (Machine-to-Machine). As shown in FIG. 1, the terminal 20 receives control signals or data from the base station 10 in DL and transmits control signals or data to the base station 10 in UL, thereby utilizing various communication services provided by the wireless communication system. The terminal 20 also receives various reference signals transmitted from the base station 10, and performs measurement of the propagation path quality based on the reception results of the reference signals.
  • M2M Machine-to-Machine
  • requirements are being considered for the next generation, 6G.
  • such requirements include ultra broadband communication, mission critical communication, ultra massive connection, universal coverage, intelligent connection, ubiquitous sensing, etc.
  • the new concepts that are being pursued are extensible (i.e., to be able to be used more effectively in the future), customizable (i.e., to be easier to operate), and sustainable (i.e., to reduce costs and have a more robust structure).
  • FIG. 2 is a diagram for explaining an example of sharing in an embodiment of the present invention.
  • sharing as shown in FIG. 2 is being considered between multiple MNOs (Mobile network operators) even in licensed band operations.
  • MNOs Mobile network operators
  • core network sharing has been considered for LTE, such as the GWCN (Gateway Core Network) and MOCN (Multi-Operator Core Network) shown in Figure 2.
  • GWCN Globalstar Core Network
  • MOCN Multi-Operator Core Network
  • a shared core network cells are shared and different operators are assigned different PLMN (Public Land Mobile Network) IDs.
  • PLMN Public Land Mobile Network
  • RAN sharing has been considered for LTE, such as MORAN (Multi-Operators Radio Access Network) shown in Figure 2.
  • MORAN Multi-Operators Radio Access Network
  • base station hardware is shared and different operators are assigned different cells.
  • site sharing as shown in Figure 2, has been considered for LTE. Sites are shared and different operators are assigned different base stations.
  • NR-U NR unlicensed
  • NR-U and Wi-Fi registered trademark
  • LTE License-Assisted Access LTE-LAA
  • NR-U of operator A and NR-U of operator B may coexist.
  • 2.4 GHz, 5-7 GHz, or 57-71 GHz may be used as unlicensed frequencies.
  • “operator” refers to, for example, a telecommunications carrier that uses a RAT. Different RATs may be used by different operators or by the same operator. In the following description, “operator” may refer to a "telecommunications carrier,” as well as a RAT used by a telecommunications carrier, or communication equipment (e.g., a base station) used with that RAT.
  • FIG. 3 is a diagram for explaining an example (1) of frequency band sharing in an embodiment of the present invention.
  • FIG. 3 shows an example of sharing frequencies between multiple operators (e.g., operators A, B, and C) using a shared frequency band.
  • operators A, B, and C do not use frequencies individually assigned to each operator as shown on the left side of FIG. 3, but use a common frequency between the operators as shown on the right side of FIG. 3.
  • each operator may be able to use a wider band of frequencies than when frequencies are individually assigned.
  • 2.3 GHz or 3.5 GHz may be used as the shared frequency band.
  • LAA Licensed Assisted Access
  • time synchronization when information can be shared, for example between operators using the same RAT, it is possible to introduce time synchronization between operators (hereinafter sometimes simply referred to as "synchronization").
  • synchronization can improve the utilization efficiency of the shared frequency band compared to unlicensed frequencies.
  • FIG. 4 is a diagram for explaining an example (2) of frequency band sharing in an embodiment of the present invention.
  • time synchronization may be introduced between multiple operators (for example, operators A and B).
  • multiple operators may cooperate to share a shared frequency band.
  • a terminal 20A communicates with a base station 10A of an operator A
  • a terminal 20B communicates with a base station 10B of an operator B.
  • an operator that can use the resource preferentially (hereinafter referred to as a "priority operator") is set for each resource (e.g., slot) in the shared frequency band.
  • resources in the shared frequency band may be assigned semi-statically to each operator.
  • the priority operator can use the assigned resource preferentially.
  • Such resources are hereinafter referred to as “priority resources” for convenience.
  • the resource may be used by another operator other than the priority operator (hereinafter referred to as a "non-priority operator").
  • a non-priority operator For example, in the example shown in FIG. 2, Operator A may use unused resources from the priority resources assigned to Operator B in addition to the priority resources assigned to Operator A. Conversely, Operator B may use unused resources from the priority resources assigned to Operator A in addition to the priority resources assigned to Operator B.
  • opportunistic use For convenience, such use of unused resources by non-priority operators may be referred to as "opportunistic use.”
  • a transmission signal of a priority operator and a transmission signal of a non-priority operator may be spatially multiplexed (SDM: Spatial Division Multiplexing).
  • SDM Spatial Division Multiplexing
  • a priority resource e.g., a time resource
  • a non-priority operator may use a beam (in other words, an unused beam) different from the beam (in other words, a spatial resource) used by the priority operator.
  • Spatial multiplexing can orthogonalize interference between multiple operators, improving the frequency utilization efficiency of the shared frequency band.
  • frequency utilization efficiency can be improved by introducing time synchronization between operators and by non-wired operators opportunistically using unused resources of preferred operators.
  • [Sharing of base stations between operators] 5 is a diagram for explaining an example (3) of frequency band sharing in an embodiment of the present invention.
  • a base station for example, also called gNB
  • gNB may be shared between multiple operators (for example, operators A, B, and C).
  • operators for example, operators A, B, and C.
  • a terminal 20A operated by operator A, a terminal 20B operated by operator B, and a terminal 20C operated by operator C communicate with a base station shared by operators A, B, and C.
  • the processing related to the time synchronization (or coordination) between the operators described above can be completed within that base station, reducing the amount of communication between base stations, thereby reducing the complexity of the system.
  • the shared frequency band may be a frequency used in times of disaster (such as a frequency for public safety).
  • the cost of installation can be reduced compared to when each operator installs a base station individually.
  • FIG. 6 is a diagram for explaining an example of sharing by frequency division multiplexing in an embodiment of the present invention. As shown in FIG. 6, MNO#A and MNO#B may achieve spectrum sharing by frequency division multiplexing in a certain band.
  • FIG. 7 is a diagram for explaining an example of sharing by time division multiplexing in an embodiment of the present invention. As shown in FIG. 7, MNO#A and MNO#B may achieve spectrum sharing by time division multiplexing in a certain band.
  • FIG. 8 is a diagram for explaining an example (1) of a site layout in an embodiment of the present invention.
  • a site layout in which the sites are located at the same position as shown in FIG. 8 is called an intra-site.
  • FIG. 9 is a diagram for explaining an example (2) of a site arrangement in an embodiment of the present invention.
  • a site arrangement in which the sites are located at different positions and have some overlapping coverage, as shown in FIG. 9, is called an inter-site.
  • Figure 10 is a diagram for explaining an example (1) of communication in an embodiment of the present invention.
  • TA Transmission Advance
  • Figure 10 shows an example in which, when a UE transmits an intended transmission to MNO#A, an unintended transmission is made to MNO#B.
  • the TA required differs for each MNO, so the UL for one MNO's resources may cause interference with the resources of another MNO.
  • a guard time may be defined within available resources of a frequency band shared by multiple MNOs.
  • the unit of guard time may be at least one of 1)-5) shown below.
  • the position of the guard time may be at least one of 1)-3) shown below.
  • the determination and/or setting of the guard time may be performed based on at least one of 1)-4) below.
  • Notification by MAC-CE When a guard time is notified by a MAC-CE, application of the notified guard time may start at least after transmission of an ACK corresponding to a PDSCH carrying the MAC-CE. 4) Notification by DCI. In the case where a guard time is notified by a DCI, application of the notified guard time may be started at least after transmission of an ACK corresponding to the DCI, may be started at least after transmission of an ACK corresponding to a PDSCH scheduled by the DCI, or may be started at least after transmission of a PUSCH scheduled by the DCI.
  • At least one of 1) or 2) below may be performed.
  • No DL transmission and no UL transmission is allowed.
  • the UE may not expect any reception and may not expect any transmission.
  • the UE may ignore any scheduling notification or configuration that schedules DL or UL during the guard time.
  • No UL transmission is allowed.
  • the UE may not expect any transmission.
  • the UE may not expect any UL symbols, UL slots or UL transmissions to be configured during the guard time.
  • the UE may ignore any UL scheduling notification or configuration that schedules UL during the guard time.
  • Operation 1) above prevents UL transmissions intended for one MNO from interfering with resources of other MNOs without the need for signaling.
  • Operation 2 Reporting of information related to TA for multiple MNOs may be defined.
  • the UE may report the information to the network, i.e., the base station of the MNO to which it is connected.
  • the multiple MNOs may share a frequency band, and a UE scheduled for DL or UL by the base station of the MNO to which it is connected may transmit and receive in the shared frequency band.
  • Information related to TAs for multiple MNOs may be at least one of 1)-3) below, or a combination of multiple items.
  • the bit width indicating the TA may be 12 bits or 6 bits, and may be configurable by RRC signaling, MAC-CE, or DCI.
  • Information identifying an operator or network which may be, for example, a PLMN-ID.
  • It may be a pair of a TA and a PLMN-ID, where the TA may be a TA with a base station corresponding to the PLMN-ID.
  • the report may be sent in one or more of the following ways: 1)-4), or in a combination of multiple ways:
  • the conditions for executing a report may be at least one of 1)-3) below, or a combination of multiple conditions.
  • the event may be when a TA related to a certain PLMN-ID is updated, or when a TA related to a PLMN-ID other than the connected MNO is updated.
  • reporting may not be performed.
  • the UE may report the TA or may report information indicating that no other TAs are configured. This report allows the network and/or gNB to know that there are no other MNOs sharing the frequency band.
  • the above operation 2) enables the network and/or gNB to obtain the TA required for the UE transmitting to another MNO, and allows the network and/or gNB to avoid UL scheduling that interferes with the resources of the other MNO.
  • a determination may be made as to whether or not to perform UL transmissions on a particular resource based on information related to TAs for multiple MNOs.
  • the multiple MNOs may be spectrum sharing.
  • the specific resource in question may be at least one of 1) and 2) below.
  • the unit for specifying the specific resource may be at least one of 1)-5) below.
  • TA A is a TA corresponding to a serving PLMN-ID (i.e., a PLMN-ID corresponding to a serving MNO and/or cell)
  • TA B is a TA corresponding to another PLMN-ID (i.e., a PLMN-ID corresponding to another MNO).
  • FIG. 12 is a diagram for explaining a communication example (3) in an embodiment of the present invention.
  • the UE does not need to perform UL transmission in the first X symbols of the available resources.
  • FIG. 12 there are three consecutive slots of MNO#B resources, followed by three consecutive slots of MNO#A resources.
  • the start of the available resources corresponds to the start of MNO#A resources in the first slot in FIG. 12.
  • TA A is a TA corresponding to the serving PLMN-ID (i.e., a PLMN-ID corresponding to the serving MNO and/or cell) and TA B is a TA corresponding to another PLMN-ID (i.e., a PLMN-ID corresponding to another MNO).
  • the entire UL transmission may be dropped, or only a portion of the UL transmission may be dropped.
  • the amount of the specific resource may be determined based on at least one of the following: 1)-4).
  • Notification by MAC-CE When a guard time is notified by a MAC-CE, application of the notified guard time may start at least after transmission of an ACK corresponding to a PDSCH carrying the MAC-CE. 4) Notification by DCI. In the case where a guard time is notified by a DCI, application of the notified guard time may be started at least after transmission of an ACK corresponding to the DCI, may be started at least after transmission of an ACK corresponding to a PDSCH scheduled by the DCI, or may be started at least after transmission of a PUSCH scheduled by the DCI.
  • the above operation 3) allows the UE to avoid interference with resources of other MNOs.
  • Operation 4 When DL reception and/or UL transmission is performed that overlaps fully or partially with a particular resource, the UE may perform the reception and/or transmission in a particular manner. Note that the overlap may be a time domain overlap.
  • the specific resource may be the guard time described in operation 1) above, or the specific resource described in operation 3) above.
  • the specific method may be at least one of the following methods 1) to 4).
  • Method 1 The UE drops all relevant receptions and/or transmissions.
  • Method 2 The UE pauses or postpones all such reception and/or transmission.
  • Method 3 The UE performs the reception and/or transmission on resources that are not included in the specific resources, and drops the reception and/or transmission on resources that are included in the specific resources.
  • Method 4 The UE performs the reception and/or transmission on resources not included in the specific resources, and suspends or postpones the reception and/or transmission on resources included in the specific resources.
  • FIG. 13 is a diagram for explaining an example of communication (4) in an embodiment of the present invention.
  • the reception and/or transmission that has been suspended or postponed in the above method 2) or the above method 4) may be resumed as shown in FIG. 13 when the resources for the connecting MNO become available again.
  • reception and/or transmission that has been suspended or postponed in the above method 2) or the above method 4) may be resumed at the time when the gNB and/or the network configures and/or notifies the resources for the reception and/or the transmission.
  • the resources for the reception and/or the transmission that are configured and/or notified to the gNB and/or the network may not be included in the specific resources.
  • reception and/or transmission that has been suspended or postponed in the above method 2) or the above method 4) may be resumed when DL resources and/or UL resources for the connecting MNO become available again.
  • the above operation 4) reduces interference between multiple MNOs sharing the spectrum while enabling more efficient resource allocation by the gNB scheduler.
  • the UE may receive TA commands from multiple MNOs with which it shares spectrum.
  • the signaling used for TA allocation may be at least one of 1)-4) shown below.
  • the source of the signaling used for TA allocation may be at least one of source 1) and source 2) shown below.
  • Source 1 One of multiple MNOs.
  • the UE may receive multiple MNO TA commands from an MNO corresponding to one PLMN-ID.
  • Source 2) Each of multiple MNOs. May be all MNOs.
  • the UE may receive a TA command from each MNO corresponding to each PLMN-ID.
  • one Msg2 PDSCH and/or TA command MAC-CE may carry multiple TA commands.
  • the PLMN-ID corresponding to each TA command may be explicitly carried, or the PLMN-ID corresponding to each TA command may be implicitly determined.
  • a table showing the mapping between PLMN-ID and TA value may be configured by RRC signaling, or may be notified by MAC-CE or DCI.
  • either method 1) or 2) below may be applied based on the MNO or PLMN-ID.
  • Legacy signaling may be used to notify the connecting MNO of the TA command.
  • the TA command MAC-CE may be used.
  • TA commands for MNOs other than the connected MNO may be notified via RRC connection.
  • the Msg2 PDSCH and/or TA command MAC-CE corresponding to a PLMN-ID may carry only the TA value for that PLMN-ID.
  • the UE can obtain information to achieve interference mitigation.
  • the above-described embodiments allow the network and/or gNB to obtain the TA required for the UE to transmit to other MNOs, and the network and/or gNB can avoid UL scheduling that interferes with the resources of other MNOs. Also, the UE can avoid interfering with the resources of other MNOs.
  • multiple MNOs Mobile network operators
  • multiple MNOs can share frequency bands.
  • the base station 10 and the terminal 20 include functions for implementing the above-mentioned embodiments. However, the base station 10 and the terminal 20 may each include only a part of the functions in the embodiments.
  • Fig. 14 is a diagram showing an example of the functional configuration of the base station 10 in the embodiment of the present invention.
  • the base station 10 has a transmitting unit 110, a receiving unit 120, a setting unit 130, and a control unit 140.
  • the functional configuration shown in Fig. 14 is merely an example.
  • the names of the functional divisions and functional units may be any as long as they can execute the operations related to the embodiment of the present invention.
  • the transmitting unit 110 has a function of generating a signal to be transmitted to the terminal 20 side and transmitting the signal wirelessly.
  • the transmitting unit 110 also transmits inter-network node messages to other network nodes.
  • the receiving unit 120 has a function of receiving various signals transmitted from the terminal 20 and acquiring, for example, information of a higher layer from the received signals.
  • the transmitting unit 110 also has a function of transmitting NR-PSS, NR-SSS, NR-PBCH, DL/UL control signals, etc. to the terminal 20.
  • the receiving unit 120 also receives inter-network node messages from other network nodes.
  • the setting unit 130 stores preset setting information and various setting information to be transmitted to the terminal 20.
  • the content of the setting information is, for example, information related to the spectrum sharing setting.
  • the control unit 140 controls the spectrum sharing settings as described in the embodiment.
  • the control unit 140 also executes scheduling.
  • the functional unit related to signal transmission in the control unit 140 may be included in the transmitting unit 110, and the functional unit related to signal reception in the control unit 140 may be included in the receiving unit 120.
  • Fig. 15 is a diagram showing an example of a functional configuration of the terminal 20 in the embodiment of the present invention.
  • the terminal 20 has a transmitting unit 210, a receiving unit 220, a setting unit 230, and a control unit 240.
  • the functional configuration shown in Fig. 15 is merely an example.
  • the names of the functional divisions and functional units may be any as long as they can execute the operations related to the embodiment of the present invention.
  • the transmitter 210 creates a transmission signal from the transmission data and transmits the transmission signal wirelessly.
  • the receiver 220 wirelessly receives various signals and acquires higher layer signals from the received physical layer signals.
  • the receiver 220 also has a function of receiving NR-PSS, NR-SSS, NR-PBCH, DL/UL/SL control signals, etc. transmitted from the base station 10.
  • the transmitter 210 transmits PSCCH (Physical Sidelink Control Channel), PSSCH (Physical Sidelink Shared Channel), PSDCH (Physical Sidelink Discovery Channel), PSBCH (Physical Sidelink Broadcast Channel), etc. to another terminal 20 as D2D communication, and the receiver 220 receives PSCCH, PSSCH, PSDCH, PSBCH, etc. from the other terminal 20.
  • PSCCH Physical Sidelink Control Channel
  • PSSCH Physical Sidelink Shared Channel
  • PSDCH Physical Sidelink Discovery Channel
  • PSBCH Physical Sidelink Broadcast Channel
  • the setting unit 230 stores various setting information received from the base station 10 by the receiving unit 220.
  • the setting unit 230 also stores setting information that is set in advance.
  • the content of the setting information is, for example, information related to the spectrum sharing setting.
  • the control unit 240 performs control related to the spectrum sharing settings as described in the embodiment.
  • the functional unit related to signal transmission in the control unit 240 may be included in the transmitting unit 210, and the functional unit related to signal reception in the control unit 240 may be included in the receiving unit 220.
  • each functional block may be realized using one device that is physically or logically coupled, or may be realized using two or more devices that are physically or logically separated and directly or indirectly connected (for example, using wires, wirelessly, etc.).
  • the functional block may be realized by combining the one device or the multiple devices with software.
  • Functions include, but are not limited to, judgement, determination, judgment, calculation, computation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, resolution, selection, selection, establishment, comparison, assumption, expectation, regarding, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, and assignment.
  • a functional block (component) that performs the transmission function is called a transmitting unit or transmitter.
  • the base station 10, terminal 20, etc. in one embodiment of the present disclosure may function as a computer that performs processing of the wireless communication method of the present disclosure.
  • FIG. 16 is a diagram showing an example of the hardware configuration of the base station 10 and terminal 20 in one embodiment of the present disclosure.
  • the above-mentioned base station 10 and terminal 20 may be physically configured as a computer device including a processor 1001, a storage device 1002, an auxiliary storage device 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, etc.
  • the term "apparatus" can be interpreted as a circuit, device, unit, etc.
  • the hardware configuration of the base station 10 and the terminal 20 may be configured to include one or more of the devices shown in the figure, or may be configured to exclude some of the devices.
  • the functions of the base station 10 and the terminal 20 are realized by loading specific software (programs) onto hardware such as the processor 1001 and the storage device 1002, causing the processor 1001 to perform calculations, control communications by the communication device 1004, and control at least one of the reading and writing of data in the storage device 1002 and the auxiliary storage device 1003.
  • the processor 1001 for example, operates an operating system to control the entire computer.
  • the processor 1001 may be configured as a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic unit, registers, etc.
  • CPU central processing unit
  • control unit 140, control unit 240, etc. may be realized by the processor 1001.
  • the processor 1001 reads out a program (program code), software module, data, etc. from at least one of the auxiliary storage device 1003 and the communication device 1004 to the storage device 1002, and executes various processes according to the program.
  • the program is a program that causes a computer to execute at least a part of the operations described in the above-mentioned embodiment.
  • the control unit 140 of the base station 10 shown in FIG. 14 may be stored in the storage device 1002 and realized by a control program that runs on the processor 1001.
  • the control unit 240 of the terminal 20 shown in FIG. 15 may be stored in the storage device 1002 and realized by a control program that runs on the processor 1001.
  • the processor 1001 may be implemented by one or more chips.
  • the program may be transmitted from a network via a telecommunication line.
  • the storage device 1002 is a computer-readable recording medium and may be composed of, for example, at least one of a ROM (Read Only Memory), an EPROM (Erasable Programmable ROM), an EEPROM (Electrically Erasable Programmable ROM), a RAM (Random Access Memory), etc.
  • the storage device 1002 may also be called a register, a cache, a main memory, etc.
  • the storage device 1002 can store executable programs (program codes), software modules, etc. for implementing a communication method relating to one embodiment of the present disclosure.
  • the auxiliary storage device 1003 is a computer-readable recording medium, and may be, for example, at least one of an optical disk such as a CD-ROM (Compact Disc ROM), a hard disk drive, a flexible disk, a magneto-optical disk (e.g., a compact disk, a digital versatile disk, a Blu-ray (registered trademark) disk), a smart card, a flash memory (e.g., a card, a stick, a key drive), a floppy (registered trademark) disk, a magnetic strip, etc.
  • the above-mentioned storage medium may be, for example, a database, a server, or other suitable medium that includes at least one of the storage device 1002 and the auxiliary storage device 1003.
  • the communication device 1004 is hardware (transmitting/receiving device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as, for example, a network device, a network controller, a network card, a communication module, etc.
  • the communication device 1004 may be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc., to realize at least one of, for example, Frequency Division Duplex (FDD) and Time Division Duplex (TDD).
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • the transmitting/receiving antenna, an amplifier unit, a transmitting/receiving unit, a transmission path interface, etc. may be realized by the communication device 1004.
  • the transmitting/receiving unit may be implemented as a transmitting unit or a receiving unit that is physically or logically separated.
  • the input device 1005 is an input device (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that accepts input from the outside.
  • the output device 1006 is an output device (e.g., a display, a speaker, an LED lamp, etc.) that outputs to the outside. Note that the input device 1005 and the output device 1006 may be integrated into one device (e.g., a touch panel).
  • each device such as the processor 1001 and the storage device 1002 is connected by a bus 1007 for communicating information.
  • the bus 1007 may be configured using a single bus, or may be configured using different buses between each device.
  • the base station 10 and the terminal 20 may be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), or a field programmable gate array (FPGA), and some or all of the functional blocks may be realized by the hardware.
  • the processor 1001 may be implemented using at least one of these pieces of hardware.
  • FIG. 17 shows an example configuration of a vehicle 2001.
  • the vehicle 2001 includes a drive unit 2002, a steering unit 2003, an accelerator pedal 2004, a brake pedal 2005, a shift lever 2006, front wheels 2007, rear wheels 2008, an axle 2009, an electronic control unit 2010, various sensors 2021-2029, an information service unit 2012, and a communication module 2013.
  • a communication device mounted on the vehicle 2001 and may be applied to the communication module 2013, for example.
  • the drive unit 2002 is composed of, for example, an engine, a motor, or a hybrid of an engine and a motor.
  • the steering unit 2003 includes at least a steering wheel (also called a handlebar), and is configured to steer at least one of the front wheels and the rear wheels based on the operation of the steering wheel operated by the user.
  • the electronic control unit 2010 is composed of a microprocessor 2031, memory (ROM, RAM) 2032, and a communication port (IO port) 2033. Signals are input to the electronic control unit 2010 from various sensors 2021 to 2029 provided in the vehicle 2001.
  • the electronic control unit 2010 may also be called an ECU (Electronic Control Unit).
  • Signals from the various sensors 2021-2029 include a current signal from a current sensor 2021 that senses the motor current, a front or rear wheel rotation speed signal acquired by a rotation speed sensor 2022, a front or rear wheel air pressure signal acquired by an air pressure sensor 2023, a vehicle speed signal acquired by a vehicle speed sensor 2024, an acceleration signal acquired by an acceleration sensor 2025, an accelerator pedal depression amount signal acquired by an accelerator pedal sensor 2029, a brake pedal depression amount signal acquired by a brake pedal sensor 2026, a shift lever operation signal acquired by a shift lever sensor 2027, and a detection signal for detecting obstacles, vehicles, pedestrians, etc. acquired by an object detection sensor 2028.
  • the information service unit 2012 is composed of various devices, such as a car navigation system, an audio system, speakers, a television, and a radio, for providing (outputting) various information such as driving information, traffic information, and entertainment information, and one or more ECUs for controlling these devices.
  • the information service unit 2012 uses information acquired from an external device via the communication module 2013 or the like to provide various multimedia information and multimedia services to the occupants of the vehicle 2001.
  • the information service unit 2012 may include input devices (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, a touch panel, etc.) that accept input from the outside, and may also include output devices (e.g., a display, a speaker, an LED lamp, a touch panel, etc.) that perform output to the outside.
  • input devices e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, a touch panel, etc.
  • output devices e.g., a display, a speaker, an LED lamp, a touch panel, etc.
  • the driving assistance system unit 2030 is composed of various devices that provide functions for preventing accidents and reducing the driving burden on the driver, such as a millimeter wave radar, LiDAR (Light Detection and Ranging), a camera, a positioning locator (e.g., GNSS, etc.), map information (e.g., high definition (HD) maps, autonomous vehicle (AV) maps, etc.), a gyro system (e.g., IMU (Inertial Measurement Unit), INS (Inertial Navigation System), etc.), AI (Artificial Intelligence) chip, and AI processor, as well as one or more ECUs that control these devices.
  • the driving assistance system unit 2030 transmits and receives various information via the communication module 2013 to realize driving assistance functions or autonomous driving functions.
  • the communication module 2013 can communicate with the microprocessor 2031 and components of the vehicle 2001 via the communication port.
  • the communication module 2013 transmits and receives data via the communication port 2033 between the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, front wheels 2007, rear wheels 2008, axle 2009, microprocessor 2031 and memory (ROM, RAM) 2032 in the electronic control unit 2010, and sensors 2021 to 29, which are provided on the vehicle 2001.
  • the communication module 2013 is a communication device that can be controlled by the microprocessor 2031 of the electronic control unit 2010 and can communicate with an external device. For example, it transmits and receives various information to and from the external device via wireless communication.
  • the communication module 2013 may be located either inside or outside the electronic control unit 2010.
  • the external device may be, for example, a base station, a mobile station, etc.
  • the communication module 2013 may transmit at least one of the signals from the various sensors 2021-2028 described above input to the electronic control unit 2010, information obtained based on the signals, and information based on input from the outside (user) obtained via the information service unit 2012 to an external device via wireless communication.
  • the electronic control unit 2010, the various sensors 2021-2028, the information service unit 2012, etc. may be referred to as input units that accept input.
  • the PUSCH transmitted by the communication module 2013 may include information based on the above input.
  • the communication module 2013 receives various information (traffic information, signal information, vehicle distance information, etc.) transmitted from an external device, and displays it on the information service unit 2012 provided in the vehicle 2001.
  • the information service unit 2012 may be called an output unit that outputs information (for example, outputs information to a device such as a display or speaker based on the PDSCH (or data/information decoded from the PDSCH) received by the communication module 2013).
  • the communication module 2013 also stores various information received from an external device in a memory 2032 that can be used by the microprocessor 2031.
  • the microprocessor 2031 may control the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, front wheels 2007, rear wheels 2008, axles 2009, sensors 2021 to 2029, etc. provided in the vehicle 2001.
  • a terminal having a receiver that receives a plurality of TA (Timing Advance) commands corresponding to a plurality of MNOs (Mobile network operators) that share a frequency band, a transmitter that transmits the TA commands corresponding to MNOs other than a connected MNO to a base station of the connected MNO, and a controller that performs transmission in the frequency band based on scheduling received from the base station.
  • TA Triming Advance
  • MNOs Mobile network operators
  • the above configuration enables the network and/or gNB to obtain the TA required by the UE to transmit to other MNOs, and the network and/or gNB can avoid UL scheduling that interferes with the resources of other MNOs. Also, the UE can avoid interference with the resources of other MNOs. In other words, in a wireless communication system, multiple MNOs (Mobile network operators) can share a frequency band.
  • MNOs Mobile network operators
  • the receiver may receive the multiple TA commands from a base station corresponding to one MNO.
  • This configuration enables the network and/or gNB to obtain a TA requested by the UE to transmit to another MNO, and the network and/or gNB can avoid UL scheduling that interferes with the resources of the other MNO. Also, the UE can avoid interference with the resources of the other MNO.
  • the transmitter may transmit the TA command corresponding to an MNO other than the connected MNO to a base station of the connected MNO when any of the multiple TA commands is updated.
  • This configuration enables the network and/or gNB to obtain a TA requested by the UE to transmit to the other MNO, and the network and/or gNB can avoid UL scheduling that interferes with the resources of the other MNO. In addition, the UE can avoid interference with the resources of the other MNO.
  • the control unit may not perform transmission on a specific resource based on the multiple TA commands. This configuration allows the UE to avoid interference with resources of other MNOs.
  • the control unit may not perform transmission at the end of available resources or at the beginning of available resources based on the multiple TA commands. This configuration allows the UE to avoid interference with resources of other MNOs.
  • a communication method in which a terminal executes the steps of receiving multiple TA (Timing Advance) commands corresponding to multiple MNOs (Mobile network operators) that share a frequency band, transmitting the TA commands corresponding to MNOs other than the connected MNO to a base station of the connected MNO, and executing transmission in the frequency band based on the scheduling received from the base station.
  • TA Triming Advance
  • MNOs Mobile network operators
  • the above configuration enables the network and/or gNB to obtain the TA required by the UE to transmit to other MNOs, and the network and/or gNB can avoid UL scheduling that interferes with the resources of other MNOs. Also, the UE can avoid interference with the resources of other MNOs. In other words, in a wireless communication system, multiple MNOs (Mobile network operators) can share a frequency band.
  • MNOs Mobile network operators
  • the operations of multiple functional units may be physically performed by one part, or the operations of one functional unit may be physically performed by multiple parts.
  • the order of the processing procedures described in the embodiment may be changed as long as there is no contradiction.
  • the base station 10 and the terminal 20 have been described using functional block diagrams, but such devices may be realized by hardware, software, or a combination thereof.
  • the software operated by the processor possessed by the base station 10 in accordance with an embodiment of the present invention and the software operated by the processor possessed by the terminal 20 in accordance with an embodiment of the present invention may each be stored in random access memory (RAM), flash memory, read only memory (ROM), EPROM, EEPROM, register, hard disk (HDD), removable disk, CD-ROM, database, server or any other suitable storage medium.
  • the notification of information is not limited to the aspects/embodiments described in the present disclosure and may be performed using other methods.
  • the notification of information may be performed by physical layer signaling (e.g., Downlink Control Information (DCI), Uplink Control Information (UCI)), higher layer signaling (e.g., Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling), broadcast information (Master Information Block (MIB), System Information Block (SIB)), other signals, or a combination of these.
  • RRC signaling may be referred to as an RRC message, and may be, for example, an RRC Connection Setup message, an RRC Connection Reconfiguration message, etc.
  • Each aspect/embodiment described in this disclosure may be applied to at least one of systems utilizing LTE (Long Term Evolution), LTE-Advanced (LTE-A), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), 5G (5th generation mobile communication system), FRA (Future Radio Access), NR (new Radio), W-CDMA (registered trademark), GSM (registered trademark), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, UWB (Ultra-Wide Band), Bluetooth (registered trademark), or other suitable systems, and next generation systems enhanced based on these. Additionally, multiple systems may be combined (for example, a combination of at least one of LTE and LTE-A with 5G, etc.).
  • certain operations that are described as being performed by the base station 10 may in some cases be performed by its upper node.
  • various operations performed for communication with a terminal 20 may be performed by at least one of the base station 10 and other network nodes other than the base station 10 (such as, but not limited to, an MME or S-GW).
  • the base station 10 may be a combination of multiple other network nodes (such as an MME and an S-GW).
  • the information or signals described in this disclosure may be output from a higher layer (or a lower layer) to a lower layer (or a higher layer). They may be input and output via multiple network nodes.
  • the input and output information may be stored in a specific location (e.g., memory) or may be managed using a management table.
  • the input and output information may be overwritten, updated, or added to.
  • the output information may be deleted.
  • the input information may be sent to another device.
  • the determination in this disclosure may be based on a value represented by one bit (0 or 1), a Boolean (true or false) value, or a comparison of numerical values (e.g., a comparison with a predetermined value).
  • Software shall be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures, functions, etc., whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise.
  • Software, instructions, information, etc. may also be transmitted and received via a transmission medium.
  • a transmission medium For example, if the software is transmitted from a website, server, or other remote source using at least one of wired technologies (such as coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL)), and/or wireless technologies (such as infrared, microwave), then at least one of these wired and wireless technologies is included within the definition of a transmission medium.
  • wired technologies such as coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL)
  • wireless technologies such as infrared, microwave
  • the information, signals, etc. described in this disclosure may be represented using any of a variety of different technologies.
  • the data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any combination thereof.
  • At least one of the channel and the symbol may be a signal (signaling).
  • the signal may be a message.
  • a component carrier (CC) may be called a carrier frequency, a cell, a frequency carrier, etc.
  • system and “network” are used interchangeably.
  • radio resources may be indicated by an index.
  • the names used for the above-mentioned parameters are not limiting in any respect. Furthermore, the formulas etc. using these parameters may differ from those explicitly disclosed in this disclosure.
  • the various channels (e.g., PUCCH, PDCCH, etc.) and information elements may be identified by any suitable names, and therefore the various names assigned to these various channels and information elements are not limiting in any respect.
  • base station BS
  • wireless base station base station
  • base station device fixed station
  • NodeB nodeB
  • eNodeB eNodeB
  • gNodeB gNodeB
  • access point e.g., "transmission point”
  • gNodeB gNodeB
  • a base station may also be referred to by terms such as macrocell, small cell, femtocell, and picocell.
  • a base station can accommodate one or more (e.g., three) cells.
  • a base station accommodates multiple cells, the entire coverage area of the base station can be divided into multiple smaller areas, and each smaller area can also provide communication services by a base station subsystem (e.g., a small indoor base station (RRH: Remote Radio Head)).
  • RRH Remote Radio Head
  • the term "cell” or “sector” refers to a part or the entire coverage area of at least one of the base station and base station subsystems that provide communication services in this coverage.
  • a base station transmitting information to a terminal may be interpreted as the base station instructing the terminal to control or operate based on the information.
  • MS Mobile Station
  • UE User Equipment
  • a mobile station may also be referred to by those skilled in the art as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable terminology.
  • At least one of the base station and the mobile station may be called a transmitting device, a receiving device, a communication device, etc.
  • At least one of the base station and the mobile station may be a device mounted on a moving object, the moving object itself, etc.
  • the moving object is a movable object, and the moving speed is arbitrary. It also includes the case where the moving object is stopped.
  • the moving object includes, but is not limited to, for example, a vehicle, a transport vehicle, an automobile, a motorcycle, a bicycle, a connected car, an excavator, a bulldozer, a wheel loader, a dump truck, a forklift, a train, a bus, a handcar, a rickshaw, a ship and other watercraft, an airplane, a rocket, an artificial satellite, a drone (registered trademark), a multicopter, a quadcopter, a balloon, and objects mounted thereon.
  • the moving object may also be a moving object that travels autonomously based on an operation command.
  • At least one of the base station and the mobile station may be a device that does not necessarily move during communication operations.
  • at least one of the base station and the mobile station may be an IoT (Internet of Things) device such as a sensor.
  • IoT Internet of Things
  • the base station in the present disclosure may be read as a user terminal.
  • each aspect/embodiment of the present disclosure may be applied to a configuration in which communication between a base station and a user terminal is replaced with communication between multiple terminals 20 (which may be called, for example, D2D (Device-to-Device) or V2X (Vehicle-to-Everything)).
  • the terminal 20 may be configured to have the functions of the base station 10 described above.
  • terms such as "uplink” and "downlink” may be read as terms corresponding to terminal-to-terminal communication (for example, "side").
  • the uplink channel, downlink channel, etc. may be read as a side channel.
  • the user terminal in this disclosure may be interpreted as a base station.
  • the base station may be configured to have the functions of the user terminal described above.
  • determining may encompass a wide variety of actions.
  • Determining and “determining” may include, for example, judging, calculating, computing, processing, deriving, investigating, looking up, search, inquiry (e.g., searching in a table, database, or other data structure), and considering ascertaining as “judging” or “determining.”
  • determining and “determining” may include receiving (e.g., receiving information), transmitting (e.g., sending information), input, output, accessing (e.g., accessing data in memory), and considering ascertaining as “judging” or “determining.”
  • judgment” and “decision” can include considering resolving, selecting, choosing, establishing, comparing, etc., to have been “judged” or “decided.” In other words, “judgment” and “decision” can include considering some action to have been “judged” or “decided.” Additionally, “judgment (decision)” can be interpreted as “assuming,” “ex
  • connection refers to any direct or indirect connection or coupling between two or more elements, and may include the presence of one or more intermediate elements between two elements that are “connected” or “coupled” to each other.
  • the coupling or connection between elements may be physical, logical, or a combination thereof.
  • “connected” may be read as "access.”
  • two elements may be considered to be “connected” or “coupled” to each other using at least one of one or more wires, cables, and printed electrical connections, as well as electromagnetic energy having wavelengths in the radio frequency range, microwave range, and optical (both visible and invisible) range, as some non-limiting and non-exhaustive examples.
  • the reference signal may also be abbreviated as RS (Reference Signal) or may be called a pilot depending on the applicable standard.
  • the phrase “based on” does not mean “based only on,” unless expressly stated otherwise. In other words, the phrase “based on” means both “based only on” and “based at least on.”
  • any reference to an element using a designation such as "first,” “second,” etc., used in this disclosure does not generally limit the quantity or order of those elements. These designations may be used in this disclosure as a convenient method of distinguishing between two or more elements. Thus, a reference to a first and a second element does not imply that only two elements may be employed or that the first element must precede the second element in some way.
  • a radio frame may be composed of one or more frames in the time domain. Each of the one or more frames in the time domain may be called a subframe. A subframe may further be composed of one or more slots in the time domain. A subframe may have a fixed time length (e.g., 1 ms) that is independent of numerology.
  • Numerology may be a communication parameter that applies to at least one of the transmission and reception of a signal or channel. Numerology may indicate, for example, at least one of the following: Subcarrier Spacing (SCS), bandwidth, symbol length, cyclic prefix length, Transmission Time Interval (TTI), number of symbols per TTI, radio frame structure, a particular filtering operation performed by the transceiver in the frequency domain, a particular windowing operation performed by the transceiver in the time domain, etc.
  • SCS Subcarrier Spacing
  • TTI Transmission Time Interval
  • radio frame structure a particular filtering operation performed by the transceiver in the frequency domain, a particular windowing operation performed by the transceiver in the time domain, etc.
  • a slot may consist of one or more symbols in the time domain (such as Orthogonal Frequency Division Multiplexing (OFDM) symbols, Single Carrier Frequency Division Multiple Access (SC-FDMA) symbols, etc.).
  • OFDM Orthogonal Frequency Division Multiplexing
  • SC-FDMA Single Carrier Frequency Division Multiple Access
  • a slot may be a time unit based on numerology.
  • a slot may include multiple minislots. Each minislot may consist of one or multiple symbols in the time domain. A minislot may also be called a subslot. A minislot may consist of fewer symbols than a slot.
  • a PDSCH (or PUSCH) transmitted in a time unit larger than a minislot may be called PDSCH (or PUSCH) mapping type A.
  • a PDSCH (or PUSCH) transmitted using a minislot may be called PDSCH (or PUSCH) mapping type B.
  • Radio frame, subframe, slot, minislot, and symbol all represent time units for transmitting signals. Radio frame, subframe, slot, minislot, and symbol may each be referred to by a different name that corresponds to the radio frame, subframe, slot, minislot, and symbol.
  • one subframe may be called a Transmission Time Interval (TTI)
  • TTI Transmission Time Interval
  • multiple consecutive subframes may be called a TTI
  • one slot or one minislot may be called a TTI.
  • at least one of the subframe and the TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (e.g., 1-13 symbols), or a period longer than 1 ms.
  • the unit representing the TTI may be called a slot, minislot, etc., instead of a subframe.
  • TTI refers to, for example, the smallest time unit for scheduling in wireless communication.
  • a base station performs scheduling to allocate wireless resources (such as frequency bandwidth and transmission power that can be used by each terminal 20) to each terminal 20 in TTI units.
  • wireless resources such as frequency bandwidth and transmission power that can be used by each terminal 20
  • TTI is not limited to this.
  • the TTI may be a transmission time unit for a channel-coded data packet (transport block), a code block, a code word, etc., or may be a processing unit for scheduling, link adaptation, etc.
  • the time interval e.g., the number of symbols
  • the time interval in which a transport block, a code block, a code word, etc. is actually mapped may be shorter than the TTI.
  • one or more TTIs may be the minimum time unit of scheduling.
  • the number of slots (minislots) that constitute the minimum time unit of scheduling may be controlled.
  • a TTI having a time length of 1 ms may be called a normal TTI (TTI in LTE Rel. 8-12), normal TTI, long TTI, normal subframe, normal subframe, long subframe, slot, etc.
  • TTI shorter than a normal TTI may be called a shortened TTI, short TTI, partial TTI (partial or fractional TTI), shortened subframe, short subframe, minislot, subslot, slot, etc.
  • a long TTI (e.g., a normal TTI, a subframe, etc.) may be interpreted as a TTI having a time length of more than 1 ms
  • a short TTI e.g., a shortened TTI, etc.
  • TTI length shorter than the TTI length of a long TTI and equal to or greater than 1 ms.
  • a resource block is a resource allocation unit in the time domain and frequency domain, and may include one or more consecutive subcarriers in the frequency domain.
  • the number of subcarriers included in an RB may be the same regardless of the numerology, and may be, for example, 12.
  • the number of subcarriers included in an RB may be determined based on the numerology.
  • the time domain of an RB may include one or more symbols and may be one slot, one minislot, one subframe, or one TTI in length.
  • One TTI, one subframe, etc. may each be composed of one or more resource blocks.
  • one or more RBs may be referred to as a physical resource block (PRB), a sub-carrier group (SCG), a resource element group (REG), a PRB pair, an RB pair, etc.
  • PRB physical resource block
  • SCG sub-carrier group
  • REG resource element group
  • PRB pair an RB pair, etc.
  • a resource block may be composed of one or more resource elements (REs).
  • REs resource elements
  • one RE may be a radio resource area of one subcarrier and one symbol.
  • a bandwidth part which may also be referred to as a partial bandwidth, may represent a subset of contiguous common resource blocks (RBs) for a given numerology on a given carrier, where the common RBs may be identified by an index of the RB relative to a common reference point of the carrier.
  • PRBs may be defined in a BWP and numbered within the BWP.
  • the BWP may include a BWP for UL (UL BWP) and a BWP for DL (DL BWP).
  • UL BWP UL BWP
  • DL BWP DL BWP
  • One or more BWPs may be configured for a UE within one carrier.
  • At least one of the configured BWPs may be active, and the UE may not expect to transmit or receive a given signal/channel outside the active BWP.
  • BWP bitmap
  • radio frames, subframes, slots, minislots, and symbols are merely examples.
  • the number of subframes included in a radio frame, the number of slots per subframe or radio frame, the number of minislots included in a slot, the number of symbols and RBs included in a slot or minislot, the number of subcarriers included in an RB, as well as the number of symbols in a TTI, the symbol length, and the cyclic prefix (CP) length can be changed in various ways.
  • a and B are different may mean “A and B are different from each other.”
  • the term may also mean “A and B are each different from C.”
  • Terms such as “separate” and “combined” may also be interpreted in the same way as “different.”
  • notification of specific information is not limited to being done explicitly, but may be done implicitly (e.g., not notifying the specific information).
  • Base station 110 Transmitter 120 Receiver 130 Setting unit 140 Control unit 20 Terminal 210 Transmitter 220 Receiver 230 Setting unit 240 Control unit 1001 Processor 1002 Storage device 1003 Auxiliary storage device 1004 Communication device 1005 Input device 1006 Output device

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PCT/JP2023/026302 2023-07-18 2023-07-18 端末及び通信方法 Pending WO2025017840A1 (ja)

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CN202380097952.7A CN121176150A (zh) 2023-07-18 2023-07-18 终端及通信方法

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018525872A (ja) * 2015-07-02 2018-09-06 クアルコム，インコーポレイテッド ニュートラルホストネットワークにおけるリダイレクション
JP2019537341A (ja) * 2016-10-19 2019-12-19 クアルコム，インコーポレイテッド データ送信のための新しい無線フレーム構造のための技法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018525872A (ja) * 2015-07-02 2018-09-06 クアルコム，インコーポレイテッド ニュートラルホストネットワークにおけるリダイレクション
JP2019537341A (ja) * 2016-10-19 2019-12-19 クアルコム，インコーポレイテッド データ送信のための新しい無線フレーム構造のための技法

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
3GPP TS 38.300 V17.5.0, June 2023 (2023-06-01)
3GPP TS 38.401 V17.5.0

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CN121176150A (zh) 2025-12-19

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