WO2023195111A1 - Network node and communication method - Google Patents

Network node and communication method Download PDF

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Publication number
WO2023195111A1
WO2023195111A1 PCT/JP2022/017212 JP2022017212W WO2023195111A1 WO 2023195111 A1 WO2023195111 A1 WO 2023195111A1 JP 2022017212 W JP2022017212 W JP 2022017212W WO 2023195111 A1 WO2023195111 A1 WO 2023195111A1
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WO
WIPO (PCT)
Prior art keywords
terminal
tracking area
information
network
cell
Prior art date
Application number
PCT/JP2022/017212
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French (fr)
Japanese (ja)
Inventor
淳 巳之口
スリサクル タコルスリ
マラ レディ サマ
Original Assignee
株式会社Ｎｔｔドコモ
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 株式会社Ｎｔｔドコモ filed Critical 株式会社Ｎｔｔドコモ
Priority to PCT/JP2022/017212 priority Critical patent/WO2023195111A1/en
Publication of WO2023195111A1 publication Critical patent/WO2023195111A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/10—Access restriction or access information delivery, e.g. discovery data delivery using broadcasted information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
    • H04W60/04—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration using triggered events
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup

Definitions

  • the present invention relates to a network node and a communication method in a wireless communication system.
  • NR New Radio
  • 5G New Radio
  • EPC Evolved Packet Core
  • the network architecture includes 5GC (5G Core Network) and NG-RAN (Next Generation - Radio Access Network), which corresponds to E-UTRAN (Evolved Universal Terrestrial Radio Access Network), which is RAN (Radio Access Network) in LTE network architecture.
  • 5GC 5G Core Network
  • NG-RAN Next Generation - Radio Access Network
  • E-UTRAN Evolved Universal Terrestrial Radio Access Network
  • RAN Radio Access Network
  • the terminal 20 and the RAN 10 share information in which S-NSSAI (Single-Network Slice Selection Assistance Information) and NSAG-ID (Network Slice Access Stratum Group-IDentification) are associated with each other. - Identify the network slice using the ID.
  • S-NSSAI Single-Network Slice Selection Assistance Information
  • NSAG-ID Network Slice Access Stratum Group-IDentification
  • the RAN selects a network corresponding to the adjacent TA.
  • Information in which the NSAG-ID to which the slice belongs, the accommodated frequency, and the priority of each accommodated frequency are associated is broadcast together with a TAC (Tracking Area Code) for identifying adjacent TAs.
  • the terminal stores in advance information that associates the S-NSSAI and NSAG-ID of all TAs in the PLMN (Public Land Mobile Network).
  • SIB system information
  • the present invention has been made in view of the above points, and an object of the present invention is to appropriately perform cell reselection based on network slices.
  • receiving correspondence information that associates an identifier of a network slice with an identifier for identifying the network slice in system information regarding the tracking area is received from another network node. and a transmitting unit that transmits a registration permission response including the correspondence information to the terminal in response to a registration request from the terminal, and the correspondence information for each tracking area is transmitted to the cell in which the terminal is located.
  • the system information regarding the tracking area includes a corresponding tracking area and a tracking area adjacent to the tracking area corresponding to the serving cell of the terminal;
  • a network node is provided that includes information about a tracking area corresponding to a cell served by the terminal, and a tracking area adjacent to a tracking area corresponding to a serving cell of the terminal.
  • a technology that makes it possible to appropriately perform cell reselection based on network slices.
  • FIG. 1 is a diagram for explaining a wireless communication system according to an embodiment of the present invention.
  • 1 is a diagram showing an example of a configuration of a wireless communication system according to an embodiment of the present invention.
  • FIG. 2 is a sequence diagram showing an example of the flow of a terminal registration procedure according to an embodiment of the present invention.
  • FIG. 3 is a diagram for explaining the operation of the terminal according to the embodiment of the present invention.
  • FIG. 7 is a diagram for explaining the operation of a terminal according to a comparative example.
  • 1 is a diagram showing an example of a functional configuration of a base station according to an embodiment of the present invention.
  • 1 is a diagram illustrating an example of a functional configuration of a terminal according to an embodiment of the present invention.
  • FIG. 1 is a diagram showing an example of the hardware configuration of a base station or a terminal according to an embodiment of the present invention.
  • 1 is a diagram showing an example of the configuration of a vehicle according to an embodiment of the present invention.
  • LTE Long Term Evolution
  • NR NR-Advanced
  • SS Synchronization signal
  • PSS Primary SS
  • SSS Secondary SS
  • PBCH Physical broadcast channel
  • PRACH Physical Terms such as random access channel
  • PDCCH Physical Downlink Control Channel
  • PDSCH Physical Downlink Shared Channel
  • PUCCH Physical Uplink Control Channel
  • PUSCH Physical Uplink Shared Channel
  • the duplex method may be a TDD (Time Division Duplex) method, an FDD (Frequency Division Duplex) method, or another method (for example, Flexible Duplex, etc.). This method may also be used.
  • “configuring" wireless parameters etc. may mean pre-configuring predetermined values, or It may also be possible to set wireless parameters notified from.
  • FIG. 1 is a diagram for explaining a wireless communication system according to an embodiment of the present invention.
  • the wireless communication system according to the embodiment of the present invention includes a base station 10 and a terminal 20, as shown in FIG. Although one base station 10 and one terminal 20 are shown in FIG. 1, this is just an example, and there may be a plurality 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 radio 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 resource blocks. Good too.
  • a TTI Transmission Time Interval
  • a TTI Transmission Time Interval
  • the base station 10 transmits a synchronization signal and system information to the terminal 20.
  • the synchronization signals are, for example, NR-PSS and NR-SSS.
  • System information is transmitted, for example, on NR-PBCH, and is also referred to as broadcast information.
  • the synchronization signal and system information may be called SSB (SS/PBCH block).
  • the base station 10 transmits a control signal or data to the terminal 20 on the DL (Downlink), and receives the control signal or data from the terminal 20 on the UL (Uplink).
  • Both the base station 10 and the terminal 20 can perform beamforming to transmit and receive signals. Further, both the base station 10 and the terminal 20 can apply MIMO (Multiple Input Multiple Output) communication to DL or UL.
  • MIMO Multiple Input Multiple Output
  • both the base station 10 and the terminal 20 may communicate via a secondary cell (SCell) and a primary cell (PCell) using CA (Carrier Aggregation). Furthermore, the terminal 20 may communicate via a primary cell of the base station 10 and a primary SCG cell (PSCell) of another base station 10 using DC (Dual Connectivity).
  • SCell secondary cell
  • PCell primary cell
  • DC Direct Connectivity
  • the terminal 20 is a communication device equipped with a wireless communication function, such as a smartphone, a mobile phone, a tablet, a wearable terminal, or a communication module for M2M (Machine-to-Machine). As shown in FIG. 1, the terminal 20 receives control signals or data from the base station 10 via DL, and transmits control signals or data to the base station 10 via UL, thereby receiving various types of information provided by the wireless communication system. Use communication services. Furthermore, the terminal 20 receives various reference signals transmitted from the base station 10, and measures the channel quality based on the reception results of the reference signals. Note that the terminal 20 may be called a UE, and the base station 10 may be called a gNB.
  • FIG. 2 is a diagram illustrating an example of the configuration of a wireless communication system according to an embodiment of the present invention.
  • the wireless communication system includes a RAN (Radio Access Network) 10, a terminal 20, and a plurality of network nodes.
  • RAN Radio Access Network
  • network nodes it is assumed that one network node corresponds to each function, but one network node may realize a plurality of functions, or a plurality of network nodes 30 may realize one function.
  • the "connection" described below may be a logical connection or a physical connection.
  • the RAN 10 is a network node having a wireless access function, may include the base station 10, and is connected to the terminal 20, the AMF (Access and Mobility Management Function) 310, and the UPF (User plane function).
  • the AMF 310 is a network node having functions such as RAN interface termination, NAS (Non-Access Stratum) termination, registration management, connection management, reachability management, and mobility management.
  • the UPF is a network node that has functions such as a PDU (Protocol Data Unit) session point for the outside that interconnects with a DN (Data Network), packet routing and forwarding, and user plane QoS (Quality of Service) handling.
  • the UPF and DN constitute a network slice.
  • a plurality of network slices are constructed.
  • the AMF 310 includes the terminal 20, RAN 10, SMF (Session Management function), NSSF (Network Slice Selection Function) 320, NEF (Network Exposure Function), NRF (Network Repository Function), UDM (Unified Data Management), and AUSF (Authentication Server Function). ), PCF (Policy Control Function), and AF (Application Function).
  • AMF, SMF, NSSF320, NEF, NRF, UDM, AUSF, PCF, and AF are interconnected through respective service-based interfaces, Namf, Nsmf, Nnssf, Nnef, Nnrf, Nudm, Nausf, Npcf, and Naf. It is a network node.
  • the SMF is a network node 30 that has functions such as session management, UE IP (Internet Protocol) address assignment and management, DHCP (Dynamic Host Configuration Protocol) function, ARP (Address Resolution Protocol) proxy, and roaming function.
  • the NEF is a network node 30 that has a function of notifying other NFs (Network Functions) of capabilities and events.
  • the NSSF 320 is a network node that has functions such as selecting a network slice to which the terminal 20 connects, determining permitted NSSAI (Network Slice Selection Assistance Information), determining NSSAI to be configured, and determining an AMF set to which the UE connects. be.
  • NSSAI Network Slice Selection Assistance Information
  • the PCF is a network node that has the function of controlling network policy.
  • AF is a network node that has the function of controlling application servers.
  • An NRF is a network node that has the ability to discover NF instances that provide services.
  • a UDM is a network node that manages subscriber data and authentication data. The UDM is connected to a UDR (User Data Repository) that holds the data.
  • the terminal 20 and AMF 310 are communicably connected as an N1 link.
  • AMF 310 and RAN 10 are communicably connected as an N2 link.
  • the UPF and the RAN 10 are communicably connected as an N3 link.
  • the UPF and SMF are communicably connected as an N4 link.
  • the UPF 380 and the DN 40 are communicably connected as an N6 link.
  • S-NSSAI is an identifier for identifying a network slice.
  • NSAG-ID is an identifier for grouping and identifying network slices in the RRC layer.
  • System information (SIB) transmitted from the RAN 10 to the terminal 20 includes information regarding network slices in association with the NSAG-ID.
  • the RAN 10 broadcasts information in which the NSAG-ID, accommodated frequency, and priority of each accommodated frequency are associated to the terminal 20 as system information (SIB).
  • SIB system information
  • the accommodated frequency is a frequency that accommodates a network slice.
  • the terminal 20 converts the separately defined S-NSSAI priority to the NSAG-ID priority, and camps on a high-priority frequency that accommodates the high-priority NSAG-ID (selects the frequency). ).
  • the NSAG-ID can be used repeatedly for each TA (Tracking Area). This makes it possible to shorten the number of bits of the NSAG-ID and save SIB resources.
  • the RAN 10 and the terminal 20 share information on the correspondence between the S-NSSAI and the NSAG-ID only regarding the S-NSSAI corresponding to the TA that includes the cell where the terminal 20 is located.
  • the RAN 10 selects a network slice corresponding to the adjacent TA. Broadcasts information in which the NSAG-ID defined in the neighboring TA to which the TA belongs, the accommodated frequency, and the priority of each accommodated frequency are associated together with a TAC (Tracking Area Code) for identifying the neighboring TA.
  • TAC Track Area Code
  • the terminal 20 needs to know in advance information that associates the S-NSSAI and NSAG-ID corresponding to the adjacent TA. Therefore, the terminal 20 stores in advance information that associates the S-NSSAI and NSAG-ID defined by all TAs in a PLMN (Public Land Mobile Network).
  • PLMN Public Land Mobile Network
  • "S-NSSAI included in broadcast information regarding TA” includes "S-NSSAI corresponding to TA” and "S-NSSAI corresponding to TA adjacent to the TA". Then, the RAN 10 and the terminal 20 share information in which the S-NSSAI and the NSAG-ID correspond to each other for each TA.
  • the NSSF 320 is set with information that associates the TAC, "S-NSSAI included in broadcast information regarding TA", and NSAG-ID.
  • FIG. 3 is a sequence diagram showing an example of the flow of the terminal registration procedure according to the embodiment of the present invention.
  • the terminal 20 transmits a registration request to the AMF 310 (step S101).
  • the AMF 310 requests the NSSF 320 to transmit correspondence information (step S102).
  • the correspondence information is information that associates the TAC, "S-NSSAI included in broadcast information regarding TA", and NSAG-ID.
  • the NSSF 320 transmits the correspondence information to the AMF 310 as a response (step S103).
  • the correspondence information is information set in the NSSF 320 in the above-mentioned advance settings.
  • the AMF 310 transmits a registration permission response including the received correspondence information to the terminal 20 (step S104).
  • the terminal 20 obtains information in which the TA in which the serving cell is included and the S-NSSAI and NSAG-ID corresponding to the TA adjacent to the TA are associated for each TA. This allows the terminal 20 to recognize the NSAG-ID included in the SIB broadcast from the RAN 10.
  • the terminal 20 does not need to store in advance information that associates the S-NSSAI and NSAG-ID of all TAs in the PLMN, the memory of the terminal 20 can be saved.
  • FIG. 4 is a diagram for explaining the operation of the terminal according to the embodiment of the present invention.
  • Terminal 20 is initially located away from the boundary between TA10 and TA11, cannot find frequency g, and camps on cell 1 (selects cell 1).
  • the NSAG-IDs are TA10A, TA10B, TA11X, and TA11Y, but if the TAs are separate, the AMF 310 may assign the same value to the NSAG-IDs.
  • FIG. 5 is a diagram for explaining the operation of a terminal according to a comparative example.
  • Terminal 20 is initially located away from the boundary between TA10 and TA11, cannot find frequency g, and camps on cell 1 (selects cell 1).
  • the NSAG-IDs are TA10B and TA11X, but if the TAs are separate, the AMF 310 may assign the same value to the NSAG-IDs.
  • the terminal 20 receives, from the RAN 10, an SIB related to a network slice corresponding to a TA corresponding to a serving cell and an adjacent TA, and also receives an NSAG- Correspondence information between the ID and the network slice identifier can be received from the AMF 310. Thereby, cell reselection based on network slices can be appropriately performed.
  • Base station 10, terminal 20, and various network nodes include functionality to implement the embodiments described above. However, the base station 10, the terminal 20, and various network nodes may each have only some of the functions in the embodiment.
  • FIG. 6 is a diagram showing an example of the functional configuration of the base station 10.
  • base station 10 includes a transmitting section 110, a receiving section 120, a setting section 130, and a control section 140.
  • the functional configuration shown in FIG. 6 is only an example. As long as the operations according to the embodiments of the present invention can be carried out, the functional divisions and functional parts may have any names.
  • the network node may have the same functional configuration as the base station 10. Further, a network node having a plurality of different functions in the system architecture may be configured from a plurality of network nodes separated for each function.
  • the transmitting unit 110 includes a function of generating a signal to be transmitted to the terminal 20 or another network node, and transmitting the signal by wire or wirelessly.
  • the receiving unit 120 includes a function of receiving various signals transmitted from the terminal 20 or other network nodes, and acquiring, for example, information on a higher layer from the received signals.
  • the setting unit 130 stores preset setting information and various setting information to be sent to the terminal 20 in a storage device, and reads them from the storage device as necessary.
  • the contents of the setting information include, for example, settings related to communication using NTN.
  • control unit 140 performs processing related to communication using NTN. Further, the control unit 140 performs processing related to communication with the terminal 20. Further, the control unit 140 performs processing related to verifying the geographical position of the terminal 20.
  • a functional unit related to signal transmission in the control unit 140 may be included in the transmitting unit 110, and a functional unit related to signal reception in the control unit 140 may be included in the receiving unit 120.
  • FIG. 7 is a diagram showing an example of the functional configuration of the terminal 20.
  • the terminal 20 includes a transmitting section 210, a receiving section 220, a setting section 230, and a control section 240.
  • the functional configuration shown in FIG. 7 is only an example. As long as the operations according to the embodiments of the present invention can be carried out, the functional divisions and functional parts may have any names.
  • the USIM attached to the terminal 20 may include a transmitting section 210, a receiving section 220, a setting section 230, and a control section 240, like the terminal 20.
  • the transmitter 210 creates a transmission signal from the transmission data and wirelessly transmits the transmission signal.
  • the receiving unit 220 wirelessly receives various signals and obtains higher layer signals from the received physical layer signals. Furthermore, the receiving unit 220 has a function of receiving NR-PSS, NR-SSS, NR-PBCH, DL/UL control signals, reference signals, etc. transmitted from network nodes.
  • the setting unit 230 stores various setting information received from the network node by the receiving unit 220 in a storage device, and reads it from the storage device as necessary.
  • the setting unit 230 also stores setting information that is set in advance.
  • the network node of this embodiment may be configured as a network node shown in each section below. Additionally, the following communication method may be implemented.
  • a receiving unit that receives, for each tracking area, correspondence information that associates an identifier of a network slice with an identifier for identifying the network slice in system information regarding the tracking area from another network node; a transmitter that transmits a registration permission response including the correspondence information to the terminal in response to a registration request from the terminal;
  • the correspondence information for each tracking area includes identifiers of network slices that can be used in a tracking area corresponding to a cell in which the terminal is located and a tracking area adjacent to a tracking area corresponding to the cell in which the terminal is located.
  • the system information regarding the tracking area includes information regarding a tracking area corresponding to the cell in which the terminal is located and a tracking area adjacent to the tracking area corresponding to the cell in which the terminal is located.
  • network node The correspondence information includes a code for identifying a tracking area, an identifier for the network slice, and an identifier for identifying the network slice in the system information.
  • Network node according to paragraph 1 The system information includes an identifier for identifying the network slice in system information regarding the tracking area, a frequency that accommodates the network slice in the tracking area, and a priority of the frequency.
  • the network node according to item 1 or 2.
  • (Section 4) receiving, for each tracking area, correspondence information from other network nodes that associates an identifier of a network slice with an identifier for identifying the network slice in system information regarding the tracking area; a step of transmitting a registration permission response including the correspondence information to the terminal in response to a registration request from the terminal;
  • the correspondence information for each tracking area includes identifiers of network slices that can be used in a tracking area corresponding to a cell in which the terminal is located and a tracking area adjacent to a tracking area corresponding to the cell in which the terminal is located.
  • the system information regarding the tracking area includes information regarding a tracking area corresponding to the cell in which the terminal is located and a tracking area adjacent to the tracking area corresponding to the cell in which the terminal is located.
  • any of the above configurations provides a technique that makes it possible to appropriately perform cell reselection based on network slices.
  • the third term it is possible to realize cell reselection based on network slices based on the priority of accommodation frequency by the terminal.
  • each functional block may be realized using one physically or logically coupled device, or may be realized using two or more physically or logically separated devices directly or indirectly (e.g. , wired, wireless, etc.) and may be realized using a plurality of these devices.
  • the functional block may be realized by combining software with the one device or the plurality of devices.
  • Functions include judgment, decision, judgment, calculation, calculation, processing, derivation, investigation, exploration, confirmation, reception, transmission, output, access, resolution, selection, selection, establishment, comparison, assumption, expectation, consideration, These include, but are not limited to, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, and assigning. I can't do it.
  • a functional block (configuration unit) that performs transmission is called a transmitting unit or a transmitter. In either case, as described above, the implementation method is not particularly limited.
  • the network node, terminal 20, etc. in an embodiment of the present disclosure may function as a computer that performs processing of the wireless communication method of the present disclosure.
  • FIG. 8 is a diagram illustrating an example of the hardware configuration of the base station 10 and the terminal 20 according to an embodiment of the present disclosure.
  • the network node may have a similar hardware configuration to the base station 10.
  • the USIM may have the same hardware configuration as the terminal 20.
  • the base station 10 and terminal 20 described above are 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. Good too.
  • the word “apparatus” can be read as a circuit, a device, a unit, etc.
  • the hardware configuration of the base station 10 and the terminal 20 may be configured to include one or more of each device shown in the figure, or may be configured not to include some of the devices.
  • Each function in the base station 10 and the terminal 20 is performed by loading predetermined software (programs) onto hardware such as the processor 1001 and the storage device 1002, so that the processor 1001 performs calculations and controls communication by the communication device 1004. This is realized by controlling at least one of reading and writing 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 with a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic unit, registers, and the like.
  • CPU central processing unit
  • control unit 140, control unit 240, etc. may be implemented by the processor 1001.
  • the processor 1001 reads programs (program codes), software modules, 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 in accordance with these.
  • programs program codes
  • the control unit 140 of the base station 10 shown in FIG. 6 may be realized by a control program stored in the storage device 1002 and operated on the processor 1001.
  • the control unit 240 of the terminal 20 shown in FIG. 7 may be realized by a control program stored in the storage device 1002 and operated on the processor 1001.
  • Processor 1001 may be implemented by one or more chips. Note that the program may be transmitted from a network via a telecommunications line.
  • the storage device 1002 is a computer-readable recording medium, such as at least one of ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electrically Erasable Programmable ROM), RAM (Random Access Memory), etc. may be configured.
  • the storage device 1002 may be called a register, cache, main memory, or the like.
  • the storage device 1002 can store executable programs (program codes), software modules, and the like to implement a communication method according to an embodiment of the present disclosure.
  • the auxiliary storage device 1003 is a computer-readable recording medium, such as an optical disk such as a CD-ROM (Compact Disc ROM), a hard disk drive, a flexible disk, a magneto-optical disk (for example, a compact disk, a digital versatile disk, a Blu-ray disk, etc.). -ray disk), smart card, flash memory (eg, card, stick, key drive), floppy disk, magnetic strip, etc.
  • the above-mentioned storage medium may be, for example, a database including at least one of the storage device 1002 and the auxiliary storage device 1003, a server, or other suitable medium.
  • the communication device 1004 is hardware (transmission/reception device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as a network device, network controller, network card, communication module, etc., for example.
  • the communication device 1004 includes, for example, a high frequency switch, a duplexer, a filter, a frequency synthesizer, etc. in order to realize at least one of frequency division duplex (FDD) and time division duplex (TDD). It may be composed of.
  • FDD frequency division duplex
  • TDD time division duplex
  • the transmitting and receiving unit may be physically or logically separated into a transmitting unit and a receiving unit.
  • the input device 1005 is an input device (eg, keyboard, mouse, microphone, switch, button, sensor, etc.) that accepts input from the outside.
  • the output device 1006 is an output device (for example, a display, a speaker, an LED lamp, etc.) that performs output to the outside. Note that the input device 1005 and the output device 1006 may have an integrated configuration (for example, 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 for each device.
  • the base station 10 and the terminal 20 also include hardware such as a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), and a field programmable gate array (FPGA).
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • PLD programmable logic device
  • FPGA field programmable gate array
  • a part or all of each functional block may be realized by the hardware.
  • processor 1001 may be implemented using at least one of these hardwares.
  • FIG. 9 shows an example of the configuration of the 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, a front wheel 2007, a rear wheel 2008, an axle 2009, an electronic control unit 2010, and various sensors 2021 to 2029. , an information service section 2012 and a communication module 2013.
  • Each aspect/embodiment described in this disclosure may be applied to a communication device mounted on vehicle 2001, for example, may be applied to communication module 2013.
  • 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 referred to as a steering wheel), 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 communication port (IO port) 2033. Signals from various sensors 2021 to 2029 provided in the vehicle 2001 are input to the electronic control unit 2010.
  • the electronic control unit 2010 may also be called an ECU (Electronic Control Unit).
  • Signals from various sensors 2021 to 2029 include a current signal from a current sensor 2021 that senses the motor current, a front wheel and rear wheel rotation speed signal obtained by a rotation speed sensor 2022, and a front wheel rotation speed signal obtained by an air pressure sensor 2023. and rear wheel air pressure signals, vehicle speed signals acquired by vehicle speed sensor 2024, acceleration signals acquired by acceleration sensor 2025, accelerator pedal depression amount signals acquired by accelerator pedal sensor 2029, and brake pedal sensor 2026. These include a brake pedal depression amount signal, a shift lever operation signal acquired by the shift lever sensor 2027, a detection signal for detecting obstacles, vehicles, pedestrians, etc. acquired by the object detection sensor 2028, and the like.
  • the information service department 2012 controls various devices such as car navigation systems, audio systems, speakers, televisions, and radios that provide (output) various information such as driving information, traffic information, and entertainment information, and these devices. It is composed of one or more ECUs.
  • the information service unit 2012 provides various multimedia information and multimedia services to the occupants of the vehicle 2001 using information acquired from an external device via the communication module 2013 and the like.
  • the information service department 2012 may include an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, a touch panel, etc.) that accepts input from the outside, and an output device that performs output to the outside (for example, display, speaker, LED lamp, touch panel, etc.).
  • an input device for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, a touch panel, etc.
  • an output device that performs output to the outside (for example, display, speaker, LED lamp, touch panel, etc.).
  • the driving support system unit 2030 includes a millimeter wave radar, LiDAR (Light Detection and Ranging), a camera, a positioning locator (for example, GNSS, etc.), map information (for example, a high-definition (HD) map, an autonomous vehicle (AV) map, etc.) ), gyro systems (e.g., IMU (Inertial Measurement Unit), INS (Inertial Navigation System), etc.), AI (Artificial Intelligence) chips, and AI processors that prevent accidents and reduce the driver's driving burden.
  • the system is comprised of various devices that provide functions for the purpose and one or more ECUs that control these devices. Further, the driving support system unit 2030 transmits and receives various information via the communication module 2013, and realizes a driving support function or an automatic driving function.
  • Communication module 2013 can communicate with microprocessor 2031 and components of vehicle 2001 via a communication port.
  • the communication module 2013 communicates with the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, front wheels 2007, rear wheels 2008, axle 2009, electronic Data is transmitted and received between the microprocessor 2031, memory (ROM, RAM) 2032, and sensors 2021 to 29 in the control unit 2010.
  • 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 external devices. For example, various information is transmitted and received with an 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, or the like.
  • the communication module 2013 receives signals from the various sensors 2021 to 2029 described above that are input to the electronic control unit 2010, information obtained based on the signals, and input from the outside (user) obtained via the information service unit 2012. At least one of the information based on the information may be transmitted to an external device via wireless communication.
  • the electronic control unit 2010, various sensors 2021-2029, information service unit 2012, etc. may be called an input unit that receives 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, inter-vehicle information, etc.) transmitted from an external device, and displays it on the information service section 2012 provided in the vehicle 2001.
  • Communication module 2013 also stores various information received from external devices into memory 2032 that can be used by microprocessor 2031 . Based on the information stored in the memory 2032, the microprocessor 2031 controls the drive section 2002, steering section 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, front wheel 2007, rear wheel 2008, and axle 2009 provided in the vehicle 2001. , sensors 2021 to 2029, etc. may be controlled.
  • the operations of a plurality of functional sections may be physically performed by one component, or the operations of one functional section may be physically performed by a plurality of components.
  • the order of processing may be changed as long as there is no contradiction.
  • Software operated by the processor included in the base station 10 according to the embodiment of the present invention and software operated by the processor included in the terminal 20 according to the embodiment of the present invention are respectively random access memory (RAM), flash memory, and 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 this disclosure, and may be performed using other methods.
  • the notification of information may be physical layer signaling (e.g., DCI (Downlink Control Information), UCI (Uplink Control Information)), upper layer signaling (e.g., RRC (Radio Resource Control) signaling, MAC (Medium Access Control) signaling). , broadcast information (MIB (Master Information Block), SIB (System Information Block)), other signals, or a combination thereof.
  • RRC signaling may be called an RRC message, and may be, for example, an RRC Connection Setup message, an RRC Connection Reconfiguration message, or the like.
  • Each aspect/embodiment described in this disclosure is LTE (Long Term Evolution), LTE-A (LTE-Advanced), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), 5G (5th generation mobile communication system). system), 6th generation mobile communication system (6G), xth generation mobile communication system (xG) (xG (x is an integer or decimal number, for example)), FRA (Future Radio Access), NR (new Radio), New radio access ( NX), Future generation radio access (FX), W-CDMA (registered trademark), GSM (registered trademark), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802 Systems that utilize .16 (WiMAX (registered trademark)), IEEE 802.20, UWB (Ultra-WideBand), Bluetooth (registered trademark), and other appropriate systems, and that are extended, modified, created, and defined based on these.
  • the present invention may be
  • the base station 10 may be performed by its upper node in some cases.
  • various operations performed for communication with a terminal 20 are performed by the base station 10 and other network nodes other than the base station 10. It is clear that this can be done by at least one of the following: for example, MME or S-GW (possible, but not limited to).
  • MME Mobility Management Entity
  • S-GW Packet Control Function
  • the other network node may be a combination of multiple other network nodes (for example, MME and S-GW).
  • the information, signals, etc. described in this disclosure can be output from an upper layer (or lower layer) to a lower layer (or upper layer). It may be input/output via multiple network nodes.
  • the input/output information may be stored in a specific location (for example, memory) or may be managed using a management table. Information etc. to be input/output may be overwritten, updated, or additionally written. The output information etc. may be deleted. The input information etc. may be transmitted to other devices.
  • the determination in the present disclosure may be performed based on a value represented by 1 bit (0 or 1), a truth value (Boolean: true or false), or a comparison of numerical values (e.g. , comparison with a predetermined value).
  • Software includes instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, whether referred to as software, firmware, middleware, microcode, hardware description language, or by any other name. , should be broadly construed to mean an application, software application, software package, routine, subroutine, object, executable, thread of execution, procedure, function, etc.
  • software, instructions, information, etc. may be sent and received via a transmission medium.
  • a transmission medium For example, if the software uses wired technology (coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), etc.) and/or wireless technology (infrared, microwave, etc.) to create a website, When transmitted from a server or other remote source, these wired and/or wireless technologies are included within the definition of transmission medium.
  • wired technology coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), etc.
  • wireless technology infrared, microwave, etc.
  • data, instructions, commands, information, signals, bits, symbols, chips, etc. which may be referred to throughout the above description, may refer to voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any of these. It may also be represented by a combination of
  • At least one of the channel and the symbol may be a signal.
  • the signal may be a message.
  • a component carrier may also be called a carrier frequency, a cell, a frequency carrier, or the like.
  • system and “network” are used interchangeably.
  • radio resources may be indicated by an index.
  • Base Station BS
  • wireless base station base station
  • base station fixed station
  • NodeB eNodeB
  • gNodeB gNodeB
  • a base station can accommodate one or more (eg, three) cells. If a base station accommodates multiple cells, the overall coverage area of the base station can be partitioned into multiple smaller areas, and each smaller area is divided into multiple subsystems (e.g., small indoor base stations (RRHs)). Communication services can also be provided by Remote Radio Head).
  • RRHs small indoor base stations
  • Communication services can also be provided by Remote Radio Head).
  • the term "cell” or “sector” refers to part or all of the coverage area of a base station and/or base station subsystem that provides communication services in this coverage.
  • MS Mobile Station
  • UE User Equipment
  • a mobile station is defined by a person skilled in the art as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless It may also be referred to as a terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable terminology.
  • At least one of a base station and a mobile station may be called a transmitting device, a receiving device, a communication device, etc.
  • the base station and the mobile station may be a device mounted on a mobile body, the mobile body itself, or the like.
  • the moving object may be a vehicle (for example, a car, an airplane, etc.), an unmanned moving object (for example, a drone, a self-driving car, etc.), or a robot (manned or unmanned). ).
  • at least one of the base station and the mobile station includes devices that do 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 replaced by a user terminal.
  • communication between a base station and a user terminal is replaced with communication between a plurality of terminals 20 (for example, it may be called D2D (Device-to-Device), V2X (Vehicle-to-Everything), etc.).
  • the terminal 20 may have the functions that the base station 10 described above has.
  • words such as "up” and “down” may be replaced with words corresponding to inter-terminal communication (for example, "side”).
  • uplink channels, downlink channels, etc. may be replaced with side channels.
  • the user terminal in the present disclosure may be replaced with a base station.
  • the base station may have the functions that the user terminal described above has.
  • determining may encompass a wide variety of operations.
  • “Judgment” and “decision” include, for example, judging, calculating, computing, processing, deriving, investigating, looking up, search, and inquiry. (e.g., searching in a table, database, or other data structure), and regarding an ascertaining as a “judgment” or “decision.”
  • judgment and “decision” refer to receiving (e.g., receiving information), transmitting (e.g., sending information), input, output, and access.
  • (accessing) may include considering something as a “judgment” or “decision.”
  • judgment and “decision” refer to resolving, selecting, choosing, establishing, comparing, etc. as “judgment” and “decision”. may be included.
  • judgment and “decision” may include regarding some action as having been “judged” or “determined.”
  • judgment (decision) may be read as “assuming", “expecting", “considering”, etc.
  • connection refers to any connection or coupling, direct or indirect, between two or more elements and to each other. It may include the presence of one or more intermediate elements between two elements that are “connected” or “coupled.”
  • the bonds or connections between elements may be physical, logical, or a combination thereof. For example, "connection” may be replaced with "access.”
  • two elements may include one or more electrical wires, cables, and/or printed electrical connections, as well as in the radio frequency domain, as some non-limiting and non-inclusive examples. , electromagnetic energy having wavelengths in the microwave and optical (both visible and non-visible) ranges.
  • the reference signal can also be abbreviated as RS (Reference Signal), and may be called a pilot depending on the applied standard.
  • RS Reference Signal
  • the phrase “based on” does not mean “based solely on” unless explicitly stated otherwise. In other words, the phrase “based on” means both “based only on” and “based at least on.”
  • any reference to elements using the designations "first,” “second,” etc. does not generally limit the amount or order of those elements. These designations may be used in this disclosure as a convenient way to distinguish between two or more elements. Thus, reference to a first and second element does not imply that only two elements may be employed or that the first element must precede the second element in any way.
  • a radio frame may be composed of one or more frames in the time domain. Each frame or frames in the time domain may be called a subframe. A subframe may also be composed of one or more slots in the time domain. A subframe may have a fixed time length (eg, 1 ms) that does not depend on numerology.
  • the numerology may be a communication parameter applied to the transmission and/or reception of a certain signal or channel. Numerology includes, for example, subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame configuration, and transmitter/receiver. It may also indicate at least one of a specific filtering process performed in the frequency domain, a specific windowing process performed by the transceiver in the time domain, and the like.
  • SCS subcarrier spacing
  • TTI transmission time interval
  • transmitter/receiver transmitter/receiver. It may also indicate at least one of a specific filtering process performed in the frequency domain, a specific windowing process performed by the transceiver in the time domain, and the like.
  • a slot may be composed of one or more symbols (OFDM (Orthogonal Frequency Division Multiplexing) symbols, SC-FDMA (Single Carrier Frequency Division Multiple Access) symbols, etc.) in the time domain.
  • a slot may be a unit of time based on numerology.
  • a slot may include multiple mini-slots. Each minislot may be made up of one or more symbols in the time domain. Furthermore, a mini-slot may also be called a sub-slot. A minislot may be made up of fewer symbols than a slot.
  • PDSCH (or PUSCH) transmitted in time units larger than minislots may be referred to as PDSCH (or PUSCH) mapping type A.
  • PDSCH (or PUSCH) transmitted using minislots may be referred to as PDSCH (or PUSCH) mapping type B.
  • Radio frames, subframes, slots, minislots, and symbols all represent time units when transmitting signals. Other 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
  • multiple consecutive subframes may be called a TTI
  • one slot or one minislot may be called a TTI. It's okay.
  • at least one of the subframe and TTI may be a subframe (1ms) in existing LTE, a period shorter than 1ms (for example, 1-13 symbols), or a period longer than 1ms. It may be.
  • the unit representing the TTI may be called a slot, minislot, etc. instead of a subframe.
  • TTI refers to, for example, the minimum time unit for scheduling in wireless communication.
  • a base station performs scheduling to allocate radio resources (frequency bandwidth, transmission power, etc. that can be used by each terminal 20) to each terminal 20 on a TTI basis.
  • radio resources frequency bandwidth, transmission power, etc. that can be used by each terminal 20
  • TTI is not limited to this.
  • the TTI may be a transmission time unit of a channel-coded data packet (transport block), a code block, a codeword, etc., or may be a processing unit of scheduling, link adaptation, etc. Note that when a TTI is given, the time interval (for example, the number of symbols) to which transport blocks, code blocks, code words, etc. are actually mapped may be shorter than the TTI.
  • one slot or one minislot is called a TTI
  • one or more TTIs may be the minimum time unit for scheduling.
  • the number of slots (minislot number) that constitutes 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), normal TTI, long TTI, normal subframe, normal subframe, long subframe, slot, etc.
  • TTI that is shorter than the normal TTI may be referred to as an abbreviated TTI, short TTI, partial or fractional TTI, shortened subframe, short subframe, minislot, subslot, slot, etc.
  • long TTI for example, normal TTI, subframe, etc.
  • short TTI for example, short TTI, etc. It may also be read as a TTI having the above TTI length.
  • a resource block is a resource allocation unit in the time domain and frequency domain, and may include one or more continuous subcarriers in the frequency domain.
  • the number of subcarriers included in an RB may be the same regardless of the numerology, and may be 12, for example.
  • the number of subcarriers included in an RB may be determined based on newerology.
  • 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 include physical resource blocks (PRBs), sub-carrier groups (SCGs), resource element groups (REGs), PRB pairs, RB pairs, etc. May be called.
  • PRBs physical resource blocks
  • SCGs sub-carrier groups
  • REGs resource element groups
  • PRB pairs RB pairs, etc. May be called.
  • a resource block may be configured by one or more resource elements (REs).
  • REs resource elements
  • 1 RE may be a radio resource region of 1 subcarrier and 1 symbol.
  • a bandwidth part (which may also be called a partial bandwidth or the like) may represent a subset of consecutive common resource blocks (RBs) for a certain numerology in a certain carrier.
  • the common RB may be specified by an RB index based on a common reference point of the carrier.
  • PRBs may be defined in a BWP and numbered within that BWP.
  • the BWP may include a UL BWP (UL BWP) and a DL BWP (DL BWP).
  • UL BWP UL BWP
  • DL BWP DL BWP
  • One or more BWPs may be configured for the terminal 20 within one carrier.
  • At least one of the configured BWPs may be active, and the terminal 20 does not need to assume that it transmits or receives a given signal/channel outside the active BWP.
  • Note that "cell”, “carrier”, etc. in the present disclosure may be replaced with "BWP”.
  • radio frames, subframes, slots, minislots, symbols, etc. described above 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 symbols included in an RB, Configurations such as the number of subcarriers, 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.” Note that the term may also mean that "A and B are each different from C”. Terms such as “separate” and “coupled” may also be interpreted similarly to “different.”
  • notification of prescribed information is not limited to being done explicitly, but may also be done implicitly (for example, not notifying the prescribed information). Good too.
  • Base station (RAN) 110 Transmitting section 120 Receiving section 130 Setting section 140 Control section 20 Terminal 210 Transmitting section 220 Receiving section 230 Setting section 240 Control section 310 AMF 320 NSSF 1001 Processor 1002 Storage device 1003 Auxiliary storage device 1004 Communication device 1005 Input device 1006 Output device 2001 Vehicle 2002 Drive section 2003 Steering section 2004 Accelerator pedal 2005 Brake pedal 2006 Shift lever 2007 Front wheel 2008 Rear wheel 2009 Axle 2010 Electronic control section 2012 Information service Department 2013 Communication module 2021 Current sensor 2022 Rotational speed sensor 2023 Air pressure sensor 2024 Vehicle speed sensor 2025 Acceleration sensor 2026 Brake pedal sensor 2027 Shift lever sensor 2028 Object detection sensor 2029 Accelerator pedal sensor 2030 Driving support system unit 2031 Microprocessor 2032 Memory (ROM, RAM) 2033 Communication port (IO port)

Abstract

This network node comprises: a reception unit that receives, from another network node, correspondence information in which, for each tracking area, an identifier of a network slice and an identifier for identifying the network slice in system information relating to the tracking area have been associated with each other; and a transmission unit that transmits, in response to a registration request from a terminal, a registration permission response including the correspondence information to the terminal. The correspondence information for each tracking area includes an identifier of a network slice available for use in a tracking area corresponding to a cell where the terminal is present and in a tracking area adjacent to said tracking area corresponding to the cell where the terminal is present. The system information relating to the tracking area includes information relating to the tracking area corresponding to the cell where the terminal is present and to the tracking area adjacent to said tracking area corresponding to the cell where the terminal is present.

Description

ネットワークノード及び通信方法Network nodes and communication methods
　本発明は、無線通信システムにおけるネットワークノード及び通信方法に関する。 The present invention relates to a network node and a communication method in a wireless communication system.
　ＬＴＥ（Long Term Evolution）の後継システムであるＮＲ（New Radio）（「５Ｇ」ともいう。）においては、ＬＴＥ（Long Term Evolution）のネットワークアーキテクチャにおけるコアネットワークであるＥＰＣ（Evolved Packet Core）に対応する５ＧＣ（5G Core Network）及びＬＴＥのネットワークアーキテクチャにおけるＲＡＮ（Radio Access Network）であるＥ－ＵＴＲＡＮ（Evolved Universal Terrestrial Radio Access Network）に対応するＮＧ－ＲＡＮ（Next Generation - Radio Access Network）を含むネットワークアーキテクチャが検討されている（例えば非特許文献１及び非特許文献２）。 NR (New Radio) (also referred to as "5G"), which is the successor system of LTE (Long Term Evolution), supports EPC (Evolved Packet Core), which is the core network in the LTE (Long Term Evolution) network architecture. The network architecture includes 5GC (5G Core Network) and NG-RAN (Next Generation - Radio Access Network), which corresponds to E-UTRAN (Evolved Universal Terrestrial Radio Access Network), which is RAN (Radio Access Network) in LTE network architecture. have been studied (for example, Non-Patent Document 1 and Non-Patent Document 2).
　ＮＲでは、ネットワークスライスに基づくセルの再選択について検討されている。具体的には、端末２０とＲＡＮ１０とが、Ｓ－ＮＳＳＡＩ（Single-Network Slice Selection Assistance Information）とＮＳＡＧ－ＩＤ（Network Slice Access Stratum Group - IDentification）とを対応させた情報を共有することによって、ＮＳＡＧ－ＩＤを用いてネットワークスライスを識別する。 In NR, cell reselection based on network slices is being considered. Specifically, the terminal 20 and the RAN 10 share information in which S-NSSAI (Single-Network Slice Selection Assistance Information) and NSAG-ID (Network Slice Access Stratum Group-IDentification) are associated with each other. - Identify the network slice using the ID.
　従来の技術では、端末が、端末の在圏するセルを含むＴＡに隣接するＴＡ（以下、隣接ＴＡ）に対応するＳ－ＮＳＳＡＩを選択可能とするために、ＲＡＮは、隣接ＴＡに対応するネットワークスライスが属するＮＳＡＧ－ＩＤ、収容周波数および各収容周波数の優先度が関連付けられた情報を、隣接ＴＡを識別するためのＴＡＣ（Tracking Area Code）と共にブロードキャストする。また、端末は、事前に、ＰＬＭＮ（Public Land Mobile Network）内の全てのＴＡのＳ－ＮＳＳＡＩとＮＳＡＧ－ＩＤとを対応させた情報を記憶する。すなわち、従来は、ブロードキャストするシステム情報（ＳＩＢ）に隣接ＴＡを識別するためのＴＡＣを含める必要があるため、ＳＩＢ長が長くなり、また、端末がＰＬＭＮ内の全てのＴＡに対応するＳ－ＮＳＳＡＩとＮＳＡＧ－ＩＤとを対応させた情報を記憶するため、端末のメモリを消費するという問題がある。このように、従来の技術では、ネットワークスライスに基づくセルの再選択を適切に実行することが困難である。 In conventional technology, in order for a terminal to be able to select an S-NSSAI corresponding to a TA adjacent to a TA that includes the cell in which the terminal is located (hereinafter referred to as an adjacent TA), the RAN selects a network corresponding to the adjacent TA. Information in which the NSAG-ID to which the slice belongs, the accommodated frequency, and the priority of each accommodated frequency are associated is broadcast together with a TAC (Tracking Area Code) for identifying adjacent TAs. Further, the terminal stores in advance information that associates the S-NSSAI and NSAG-ID of all TAs in the PLMN (Public Land Mobile Network). That is, conventionally, it is necessary to include a TAC for identifying neighboring TAs in the system information (SIB) to be broadcast, which increases the SIB length. There is a problem in that the memory of the terminal is consumed in order to store information that associates the NSAG-ID with the NSAG-ID. As described above, with conventional techniques, it is difficult to appropriately perform cell reselection based on network slices.
　本発明は上記の点に鑑みてなされたものであり、ネットワークスライスに基づくセルの再選択を適切に実行することを目的とする。 The present invention has been made in view of the above points, and an object of the present invention is to appropriately perform cell reselection based on network slices.
　開示の技術によれば、トラッキングエリアごとに、ネットワークスライスの識別子と、前記ネットワークスライスを前記トラッキングエリアに関するシステム情報において識別するための識別子とを対応させる対応情報を、他のネットワークノードから受信する受信部と、端末からの登録要求に応じて、前記対応情報を含む登録許諾の応答を前記端末に送信する送信部と、を備え、トラッキングエリアごとの前記対応情報は、前記端末の在圏セルに対応するトラッキングエリアと、前記端末の在圏セルに対応するトラッキングエリアに隣接するトラッキングエリアと、で利用可能なネットワークスライスの識別子を含み、前記トラッキングエリアに関する前記システム情報は、前記端末の在圏セルに対応するトラッキングエリアと、前記端末の在圏セルに対応するトラッキングエリアに隣接するトラッキングエリアと、に関する情報を含むネットワークノードが提供される。 According to the disclosed technology, for each tracking area, receiving correspondence information that associates an identifier of a network slice with an identifier for identifying the network slice in system information regarding the tracking area is received from another network node. and a transmitting unit that transmits a registration permission response including the correspondence information to the terminal in response to a registration request from the terminal, and the correspondence information for each tracking area is transmitted to the cell in which the terminal is located. the system information regarding the tracking area includes a corresponding tracking area and a tracking area adjacent to the tracking area corresponding to the serving cell of the terminal; A network node is provided that includes information about a tracking area corresponding to a cell served by the terminal, and a tracking area adjacent to a tracking area corresponding to a serving cell of the terminal.
　開示の技術によれば、ネットワークスライスに基づくセルの再選択を適切に実行することを可能とする技術が提供される。 According to the disclosed technology, a technology is provided that makes it possible to appropriately perform cell reselection based on network slices.
本発明の実施の形態に係る無線通信システムについて説明するための図である。1 is a diagram for explaining a wireless communication system according to an embodiment of the present invention. 本発明の実施の形態に係る無線通信システムの構成の一例を示す図である。1 is a diagram showing an example of a configuration of a wireless communication system according to an embodiment of the present invention. 本発明の実施の形態に係る端末登録手順の流れの一例を示すシーケンス図である。FIG. 2 is a sequence diagram showing an example of the flow of a terminal registration procedure according to an embodiment of the present invention. 本発明の実施の形態に係る端末の動作について説明するための図である。FIG. 3 is a diagram for explaining the operation of the terminal according to the embodiment of the present invention. 比較例に係る端末の動作について説明するための図である。FIG. 7 is a diagram for explaining the operation of a terminal according to a comparative example. 本発明の実施の形態に係る基地局の機能構成の一例を示す図である。1 is a diagram showing an example of a functional configuration of a base station according to an embodiment of the present invention. 本発明の実施の形態に係る端末の機能構成の一例を示す図である。1 is a diagram illustrating an example of a functional configuration of a terminal according to an embodiment of the present invention. 本発明の実施の形態に係る基地局又は端末のハードウェア構成の一例を示す図である。FIG. 1 is a diagram showing an example of the hardware configuration of a base station or a terminal according to an embodiment of the present invention. 本発明の実施の形態に係る車両の構成の一例を示す図である。1 is a diagram showing an example of the configuration of a vehicle according to an embodiment of the present invention.
　以下、図面を参照して本発明の実施の形態を説明する。なお、以下で説明する実施の形態は一例であり、本発明が適用される実施の形態は、以下の実施の形態に限られない。 Embodiments of the present invention will be described below with reference to the drawings. Note that the embodiment described below is an example, and the embodiment to which the present invention is applied is not limited to the following embodiment.
　本発明の実施の形態の無線通信システムの動作にあたっては、適宜、既存技術が使用されてよい。当該既存技術は、例えば既存のＮＲあるいはＬＴＥであるが、既存のＮＲあるいはＬＴＥに限られない。また、本明細書で使用する用語「ＬＴＥ」は、特に断らない限り、ＬＴＥ－Ａｄｖａｎｃｅｄ、及び、ＬＴＥ－Ａｄｖａｎｃｅｄ以降の方式（例：ＮＲ）を含む広い意味を有するものとする。 Existing technology may be used as appropriate for the operation of the wireless communication system according to the embodiment of the present invention. The existing technology is, for example, existing NR or LTE, but is not limited to existing NR or LTE. Further, the term "LTE" used in this specification has a broad meaning including LTE-Advanced and a system after LTE-Advanced (eg, NR) unless otherwise specified.
　また、以下で説明する本発明の実施の形態では、既存のＬＴＥで使用されている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）等の用語を使用する。これは記載の便宜上のためであり、これらと同様の信号、機能等が他の名称で呼ばれてもよい。また、ＮＲにおける上述の用語は、ＮＲ－ＳＳ、ＮＲ－ＰＳＳ、ＮＲ－ＳＳＳ、ＮＲ－ＰＢＣＨ、ＮＲ－ＰＲＡＣＨ等に対応する。ただし、ＮＲに使用される信号であっても、必ずしも「ＮＲ－」と明記しない。 In addition, in the embodiments of the present invention described below, SS (Synchronization signal), PSS (Primary SS), SSS (Secondary SS), PBCH (Physical broadcast channel), PRACH (Physical Terms such as random access channel), PDCCH (Physical Downlink Control Channel), PDSCH (Physical Downlink Shared Channel), PUCCH (Physical Uplink Control Channel), and PUSCH (Physical Uplink Shared Channel) are used. This is for convenience of description, and signals, functions, etc. similar to these may be referred to by other names. Also, the above terms in NR correspond to NR-SS, NR-PSS, NR-SSS, NR-PBCH, NR-PRACH, etc. However, even if the signal is used for NR, it is not necessarily specified as "NR-".
　また、本発明の実施の形態において、複信（Duplex）方式は、ＴＤＤ（Time Division Duplex）方式でもよいし、ＦＤＤ（Frequency Division Duplex）方式でもよいし、又はそれ以外（例えば、Flexible Duplex等）の方式でもよい。 Further, in the embodiment of the present invention, the duplex method may be a TDD (Time Division Duplex) method, an FDD (Frequency Division Duplex) method, or another method (for example, Flexible Duplex, etc.). This method may also be used.
　また、本発明の実施の形態において、無線パラメータ等が「設定される（Configure）」とは、所定の値が予め設定（Pre-configure）されることであってもよいし、基地局又は端末から通知される無線パラメータが設定されることであってもよい。 Furthermore, in the embodiments of the present invention, "configuring" wireless parameters etc. may mean pre-configuring predetermined values, or It may also be possible to set wireless parameters notified from.
　（システム構成）
　図１は、本発明の実施の形態に係る無線通信システムについて説明するための図である。
本発明の実施の形態に係る無線通信システムは、図１に示されるように、基地局１０及び端末２０を含む。図１には、基地局１０及び端末２０が１つずつ示されているが、これは例であり、それぞれ複数であってもよい。 (System configuration)
FIG. 1 is a diagram for explaining a wireless communication system according to an embodiment of the present invention.
The wireless communication system according to the embodiment of the present invention includes a base station 10 and a terminal 20, as shown in FIG. Although one base station 10 and one terminal 20 are shown in FIG. 1, this is just an example, and there may be a plurality of each.
　基地局１０は、１つ以上のセルを提供し、端末２０と無線通信を行う通信装置である。無線信号の物理リソースは、時間領域及び周波数領域で定義され、時間領域はＯＦＤＭ（Orthogonal　Frequency　Division　Multiplexing）シンボル数で定義されてもよいし、周波数領域はサブキャリア数又はリソースブロック数で定義されてもよい。また、時間領域におけるＴＴＩ（Transmission Time Interval）がスロットであってもよいし、ＴＴＩがサブフレームであってもよい。 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 radio 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 resource blocks. Good too. Furthermore, a TTI (Transmission Time Interval) in the time domain may be a slot, or a TTI may be a subframe.
　基地局１０は、同期信号及びシステム情報を端末２０に送信する。同期信号は、例えば、ＮＲ－ＰＳＳ及びＮＲ－ＳＳＳである。システム情報は、例えば、ＮＲ－ＰＢＣＨにて送信され、ブロードキャスト情報ともいう。同期信号及びシステム情報は、ＳＳＢ（SS/PBCH block）と呼ばれてもよい。図１に示されるように、基地局１０は、ＤＬ（Downlink）で制御信号又はデータを端末２０に送信し、ＵＬ（Uplink）で制御信号又はデータを端末２０から受信する。基地局１０及び端末２０はいずれも、ビームフォーミングを行って信号の送受信を行うことが可能である。また、基地局１０及び端末２０はいずれも、ＭＩＭＯ（Multiple Input Multiple Output）による通信をＤＬ又はＵＬに適用することが可能である。また、基地局１０及び端末２０はいずれも、ＣＡ（Carrier Aggregation）によるセカンダリセル（SCell:Secondary Cell）及びプライマリセル（PCell:Primary Cell）を介して通信を行ってもよい。さらに、端末２０は、ＤＣ（Dual Connectivity）による基地局１０のプライマリセル及び他の基地局１０のプライマリセカンダリセルグループセル（PSCell:Primary SCG Cell）を介して通信を行ってもよい。 The base station 10 transmits a synchronization signal and system information to the terminal 20. The synchronization signals are, for example, NR-PSS and NR-SSS. System information is transmitted, for example, on NR-PBCH, and is also referred to as broadcast information. The synchronization signal and system information may be called SSB (SS/PBCH block). As shown in FIG. 1, the base station 10 transmits a control signal or data to the terminal 20 on the DL (Downlink), and receives the control signal or data from the terminal 20 on the UL (Uplink). Both the base station 10 and the terminal 20 can perform beamforming to transmit and receive signals. Further, both the base station 10 and the terminal 20 can apply MIMO (Multiple Input Multiple Output) communication to DL or UL. Further, both the base station 10 and the terminal 20 may communicate via a secondary cell (SCell) and a primary cell (PCell) using CA (Carrier Aggregation). Furthermore, the terminal 20 may communicate via a primary cell of the base station 10 and a primary SCG cell (PSCell) of another base station 10 using DC (Dual Connectivity).
　端末２０は、スマートフォン、携帯電話機、タブレット、ウェアラブル端末、Ｍ２Ｍ（Machine-to-Machine）用通信モジュール等の無線通信機能を備えた通信装置である。図１に示されるように、端末２０は、ＤＬで制御信号又はデータを基地局１０から受信し、ＵＬで制御信号又はデータを基地局１０に送信することで、無線通信システムにより提供される各種通信サービスを利用する。また、端末２０は、基地局１０から送信される各種の参照信号を受信し、当該参照信号の受信結果に基づいて伝搬路品質の測定を実行する。なお、端末２０をＵＥと呼び、基地局１０をｇＮＢと呼んでもよい。 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 via DL, and transmits control signals or data to the base station 10 via UL, thereby receiving various types of information provided by the wireless communication system. Use communication services. Furthermore, the terminal 20 receives various reference signals transmitted from the base station 10, and measures the channel quality based on the reception results of the reference signals. Note that the terminal 20 may be called a UE, and the base station 10 may be called a gNB.
　図２は、本発明の実施の形態に係る無線通信システムの構成の一例を示す図である。無線通信システムは、ＲＡＮ（Radio Access Network）１０、端末２０および複数のネットワークノードを備える。以下、機能ごとに１つのネットワークノードが対応するものとするが、複数の機能を１つのネットワークノードが実現してもよいし、複数のネットワークノード３０が１つの機能を実現してもよい。また、以下に記載する「接続」は、論理的な接続であってもよいし、物理的な接続であってもよい。 FIG. 2 is a diagram illustrating an example of the configuration of a wireless communication system according to an embodiment of the present invention. The wireless communication system includes a RAN (Radio Access Network) 10, a terminal 20, and a plurality of network nodes. Hereinafter, it is assumed that one network node corresponds to each function, but one network node may realize a plurality of functions, or a plurality of network nodes 30 may realize one function. Further, the "connection" described below may be a logical connection or a physical connection.
　ＲＡＮ１０は、無線アクセス機能を有するネットワークノードであり、基地局１０を含んでもよく、端末２０、ＡＭＦ（Access and Mobility Management Function）３１０及びＵＰＦ（User plane function）と接続される。ＡＭＦ３１０は、ＲＡＮインタフェースの終端、ＮＡＳ（Non-Access Stratum）の終端、登録管理、接続管理、到達性管理、モビリティ管理等の機能を有するネットワークノードである。ＵＰＦは、ＤＮ（Data Network）と相互接続する外部に対するＰＤＵ（Protocol Data Unit）セッションポイント、パケットのルーティング及びフォワーディング、ユーザプレーンのＱｏＳ（Quality of Service）ハンドリング等の機能を有するネットワークノードである。ＵＰＦ及びＤＮは、ネットワークスライスを構成する。本発明の実施の形態における無線通信ネットワークでは、複数のネットワークスライスが構築されている。 The RAN 10 is a network node having a wireless access function, may include the base station 10, and is connected to the terminal 20, the AMF (Access and Mobility Management Function) 310, and the UPF (User plane function). The AMF 310 is a network node having functions such as RAN interface termination, NAS (Non-Access Stratum) termination, registration management, connection management, reachability management, and mobility management. The UPF is a network node that has functions such as a PDU (Protocol Data Unit) session point for the outside that interconnects with a DN (Data Network), packet routing and forwarding, and user plane QoS (Quality of Service) handling. The UPF and DN constitute a network slice. In the wireless communication network according to the embodiment of the present invention, a plurality of network slices are constructed.
　ＡＭＦ３１０は、端末２０、ＲＡＮ１０、ＳＭＦ（Session Management function）、ＮＳＳＦ（Network Slice Selection Function）３２０、ＮＥＦ（Network Exposure Function）、ＮＲＦ（Network Repository Function）、ＵＤＭ（Unified Data Management）、ＡＵＳＦ（Authentication Server Function）、ＰＣＦ（Policy Control Function）、ＡＦ（Application Function）と接続される。ＡＭＦ、ＳＭＦ、ＮＳＳＦ３２０、ＮＥＦ、ＮＲＦ、ＵＤＭ、ＡＵＳＦ、ＰＣＦ、ＡＦは、各々のサービスに基づくインタフェース、Ｎａｍｆ、Ｎｓｍｆ、Ｎｎｓｓｆ、Ｎｎｅｆ、Ｎｎｒｆ、Ｎｕｄｍ、Ｎａｕｓｆ、Ｎｐｃｆ、Ｎａｆを介して相互に接続されるネットワークノードである。 The AMF 310 includes the terminal 20, RAN 10, SMF (Session Management function), NSSF (Network Slice Selection Function) 320, NEF (Network Exposure Function), NRF (Network Repository Function), UDM (Unified Data Management), and AUSF (Authentication Server Function). ), PCF (Policy Control Function), and AF (Application Function). AMF, SMF, NSSF320, NEF, NRF, UDM, AUSF, PCF, and AF are interconnected through respective service-based interfaces, Namf, Nsmf, Nnssf, Nnef, Nnrf, Nudm, Nausf, Npcf, and Naf. It is a network node.
　ＳＭＦは、セッション管理、ＵＥのＩＰ（Internet Protocol）アドレス割り当て及び管理、ＤＨＣＰ（Dynamic Host Configuration Protocol）機能、ＡＲＰ（Address Resolution Protocol）プロキシ、ローミング機能等の機能を有するネットワークノード３０である。ＮＥＦは、他のＮＦ（Network Function）に能力及びイベントを通知する機能を有するネットワークノード３０である。 The SMF is a network node 30 that has functions such as session management, UE IP (Internet Protocol) address assignment and management, DHCP (Dynamic Host Configuration Protocol) function, ARP (Address Resolution Protocol) proxy, and roaming function. The NEF is a network node 30 that has a function of notifying other NFs (Network Functions) of capabilities and events.
　ＮＳＳＦ３２０は、端末２０が接続するネットワークスライスの選択、許可されるＮＳＳＡＩ（Network Slice Selection Assistance Information）の決定、設定されるＮＳＳＡＩの決定、ＵＥが接続するＡＭＦセットの決定等の機能を有するネットワークノードである。 The NSSF 320 is a network node that has functions such as selecting a network slice to which the terminal 20 connects, determining permitted NSSAI (Network Slice Selection Assistance Information), determining NSSAI to be configured, and determining an AMF set to which the UE connects. be.
　ＰＣＦは、ネットワークのポリシ制御を行う機能を有するネットワークノードである。ＡＦは、アプリケーションサーバを制御する機能を有するネットワークノードである。ＮＲＦは、サービスを提供するＮＦインスタンスを発見する機能を有するネットワークノードである。ＵＤＭは、加入者データ及び認証データを管理するネットワークノードである。ＵＤＭは、当該データを保持するＵＤＲ（User Data Repository）と接続される。 The PCF is a network node that has the function of controlling network policy. AF is a network node that has the function of controlling application servers. An NRF is a network node that has the ability to discover NF instances that provide services. A UDM is a network node that manages subscriber data and authentication data. The UDM is connected to a UDR (User Data Repository) that holds the data.
　端末２０とＡＭＦ３１０とは、Ｎ１リンクとして通信可能に接続されている。ＡＭＦ３１０とＲＡＮ１０とは、Ｎ２リンクとして通信可能に接続されている。ＵＰＦとＲＡＮ１０とは、Ｎ３リンクとして通信可能に接続されている。ＵＰＦとＳＭＦとは、Ｎ４リンクとして通信可能に接続されている。ＵＰＦ３８０とＤＮ４０とは、Ｎ６リンクとして通信可能に接続されている。 The terminal 20 and AMF 310 are communicably connected as an N1 link. AMF 310 and RAN 10 are communicably connected as an N2 link. The UPF and the RAN 10 are communicably connected as an N3 link. The UPF and SMF are communicably connected as an N4 link. The UPF 380 and the DN 40 are communicably connected as an N6 link.
　（従来の問題点）
　次に、従来の問題点について説明する。ＮＲでは、ネットワークスライスに基づくセルの再選択について検討されている。具体的には、端末２０とＲＡＮ１０とが、Ｓ－ＮＳＳＡＩ（Single-Network Slice Selection Assistance Information）とＮＳＡＧ－ＩＤ（Network Slice Access Stratum Group - IDentification）とを対応させた情報を共有することによって、ＮＳＡＧ－ＩＤを用いてネットワークスライスを識別する。 (Conventional problems)
Next, conventional problems will be explained. In NR, cell reselection based on network slices is being considered. Specifically, the terminal 20 and the RAN 10 share information in which S-NSSAI (Single-Network Slice Selection Assistance Information) and NSAG-ID (Network Slice Access Stratum Group - IDentification) correspond to each other. - Identify the network slice using the ID.
　Ｓ－ＮＳＳＡＩは、ネットワークスライスを識別するための識別子である。また、ＮＳＡＧ－ＩＤは、ＲＲＣレイヤでネットワークスライスをグルーピングして識別するための識別子である。ＲＡＮ１０から端末２０に送信されるシステム情報（ＳＩＢ）には、ネットワークスライスに関する情報がＮＳＡＧ－ＩＤに関連付けて含まれる。 S-NSSAI is an identifier for identifying a network slice. Further, NSAG-ID is an identifier for grouping and identifying network slices in the RRC layer. System information (SIB) transmitted from the RAN 10 to the terminal 20 includes information regarding network slices in association with the NSAG-ID.
　ＲＡＮ１０は、ＮＳＡＧ－ＩＤ、収容周波数および各収容周波数の優先度が関連付けられた情報をシステム情報（ＳＩＢ）として端末２０にブロードキャストする。ここで、収容周波数は、ネットワークスライスを収容する周波数である。端末２０は、別途定義されたＳ－ＮＳＳＡＩの優先度をＮＳＡＧ－ＩＤの優先度に変換し、高い優先度のＮＳＡＧ－ＩＤを収容する、高い優先度の周波数にキャンプする（当該周波数を選択する）。 The RAN 10 broadcasts information in which the NSAG-ID, accommodated frequency, and priority of each accommodated frequency are associated to the terminal 20 as system information (SIB). Here, the accommodated frequency is a frequency that accommodates a network slice. The terminal 20 converts the separately defined S-NSSAI priority to the NSAG-ID priority, and camps on a high-priority frequency that accommodates the high-priority NSAG-ID (selects the frequency). ).
　なお、ＮＳＡＧ－ＩＤは、ＴＡ(Tracking Area)ごとに繰り返して用いることができるものとする。これにより、ＮＳＡＧ－ＩＤのビット数を短くし、ＳＩＢの資源を節約することができる。 Note that the NSAG-ID can be used repeatedly for each TA (Tracking Area). This makes it possible to shorten the number of bits of the NSAG-ID and save SIB resources.
　従来、ＲＡＮ１０および端末２０は、端末２０の在圏するセルを含むＴＡに対応するＳ－ＮＳＳＡＩに関してのみ、Ｓ－ＮＳＳＡＩとＮＳＡＧ－ＩＤとを対応させた情報を共有する。 Conventionally, the RAN 10 and the terminal 20 share information on the correspondence between the S-NSSAI and the NSAG-ID only regarding the S-NSSAI corresponding to the TA that includes the cell where the terminal 20 is located.
　また、端末２０が、端末２０の在圏するセルを含むＴＡに隣接するＴＡ（以下、隣接ＴＡ）に対応するＳ－ＮＳＳＡＩを選択可能とするために、ＲＡＮ１０は、隣接ＴＡに対応するネットワークスライスが属する、隣接ＴＡで定義されたＮＳＡＧ－ＩＤ、収容周波数および各収容周波数の優先度が関連付けられた情報を、隣接ＴＡを識別するためのＴＡＣ（Tracking Area Code）と共にブロードキャストする。 In addition, in order to enable the terminal 20 to select an S-NSSAI corresponding to a TA adjacent to the TA including the cell in which the terminal 20 is located (hereinafter referred to as an adjacent TA), the RAN 10 selects a network slice corresponding to the adjacent TA. Broadcasts information in which the NSAG-ID defined in the neighboring TA to which the TA belongs, the accommodated frequency, and the priority of each accommodated frequency are associated together with a TAC (Tracking Area Code) for identifying the neighboring TA.
　すなわち、従来は、ブロードキャストする情報に隣接ＴＡを識別するためのＴＡＣを含める必要があるため、ＳＩＢ長が長くなるという問題がある。 That is, conventionally, since it is necessary to include a TAC for identifying adjacent TAs in the information to be broadcast, there is a problem that the SIB length becomes long.
　さらに、端末２０は、隣接ＴＡに対応するＳ－ＮＳＳＡＩとＮＳＡＧ－ＩＤとを対応させた情報を事前に知る必要がある。そこで、端末２０は、事前に、ＰＬＭＮ（Public Land Mobile Network）内の全てのＴＡでおのおのに定義されたＳ－ＮＳＳＡＩとＮＳＡＧ－ＩＤとを対応させた情報を記憶する。 Further, the terminal 20 needs to know in advance information that associates the S-NSSAI and NSAG-ID corresponding to the adjacent TA. Therefore, the terminal 20 stores in advance information that associates the S-NSSAI and NSAG-ID defined by all TAs in a PLMN (Public Land Mobile Network).
　すなわち、従来は、端末２０が、ＰＬＭＮ内の全てのＴＡでおのおのに定義されたＳ－ＮＳＳＡＩとＮＳＡＧ－ＩＤとを対応させた情報を記憶するため、端末２０のメモリを消費するという問題がある。また、１つのＴＡの設定変更を各端末２０に通知する手順が煩雑となる、という問題がある。 That is, conventionally, there is a problem that the memory of the terminal 20 is consumed because the terminal 20 stores information that associates the S-NSSAI and NSAG-ID defined by each TA in the PLMN. . Another problem is that the procedure for notifying each terminal 20 of a change in the settings of one TA becomes complicated.
　（本実施の形態の概要）
　そこで、本実施の形態では、"ＴＡに関するブロードキャスト情報に含まれるＳ－ＮＳＳＡＩ"が、"ＴＡに対応するＳ－ＮＳＳＡＩ"と"当該ＴＡに隣接するＴＡに対応するＳ－ＮＳＳＡＩ"とを含むこととし、ＲＡＮ１０および端末２０は、ＴＡごとにＳ－ＮＳＳＡＩとＮＳＡＧ－ＩＤとを対応させた情報を共有する。 (Summary of this embodiment)
Therefore, in the present embodiment, "S-NSSAI included in broadcast information regarding TA" includes "S-NSSAI corresponding to TA" and "S-NSSAI corresponding to TA adjacent to the TA". Then, the RAN 10 and the terminal 20 share information in which the S-NSSAI and the NSAG-ID correspond to each other for each TA.
　事前設定として、ＮＳＳＦ３２０は、ＴＡＣと"ＴＡに関するブロードキャスト情報に含まれるＳ－ＮＳＳＡＩ"と、ＮＳＡＧ－ＩＤとを対応させた情報が設定される。 As a preliminary setting, the NSSF 320 is set with information that associates the TAC, "S-NSSAI included in broadcast information regarding TA", and NSAG-ID.
　次に、端末登録の手順における本実施の形態における従来との相違点について説明する。 Next, differences between this embodiment and the conventional method in the terminal registration procedure will be explained.
　図３は、本発明の実施の形態に係る端末登録手順の流れの一例を示すシーケンス図である。端末２０は、登録要求をＡＭＦ３１０に送信する（ステップＳ１０１）。ＡＭＦ３１０は、登録要求を受信して、登録すべきトラッキングエリアを決定する際に、対応情報の送信をＮＳＳＦ３２０に要求する（ステップＳ１０２）。ここで、対応情報は、ＴＡＣと"ＴＡに関するブロードキャスト情報に含まれるＳ－ＮＳＳＡＩ"と、ＮＳＡＧ－ＩＤとを対応させた情報である。 FIG. 3 is a sequence diagram showing an example of the flow of the terminal registration procedure according to the embodiment of the present invention. The terminal 20 transmits a registration request to the AMF 310 (step S101). Upon receiving the registration request and determining the tracking area to be registered, the AMF 310 requests the NSSF 320 to transmit correspondence information (step S102). Here, the correspondence information is information that associates the TAC, "S-NSSAI included in broadcast information regarding TA", and NSAG-ID.
　ＮＳＳＦ３２０は、対応情報を応答としてＡＭＦ３１０に送信する（ステップＳ１０３）。当該対応情報は、前述した事前設定においてＮＳＳＦ３２０に設定される情報である。 The NSSF 320 transmits the correspondence information to the AMF 310 as a response (step S103). The correspondence information is information set in the NSSF 320 in the above-mentioned advance settings.
　ＡＭＦ３１０は、受信した対応情報を含む登録許諾の応答を端末２０に送信する（ステップＳ１０４）。 The AMF 310 transmits a registration permission response including the received correspondence information to the terminal 20 (step S104).
　本手順によって、端末２０は、在圏セルが含まれるＴＡと、当該ＴＡに隣接するＴＡに対応するＳ－ＮＳＳＡＩとＮＳＡＧ－ＩＤとがＴＡごとに対応付けられた情報を得る。これによって、端末２０は、ＲＡＮ１０からブロードキャストされるＳＩＢに含まれるＮＳＡＧ－ＩＤを認識することができる。 Through this procedure, the terminal 20 obtains information in which the TA in which the serving cell is included and the S-NSSAI and NSAG-ID corresponding to the TA adjacent to the TA are associated for each TA. This allows the terminal 20 to recognize the NSAG-ID included in the SIB broadcast from the RAN 10.
　これによって、ＲＡＮ１０からブロードキャストされるＳＩＢにＴＡＣを含める必要が無いため、ＳＩＢ長を短くすることができる。また、端末２０が、事前に、ＰＬＭＮ内の全てのＴＡのＳ－ＮＳＳＡＩとＮＳＡＧ－ＩＤとを対応させた情報を記憶する必要が無いため、端末２０のメモリを節約することができる。 As a result, it is not necessary to include the TAC in the SIB broadcast from the RAN 10, so the SIB length can be shortened. Furthermore, since the terminal 20 does not need to store in advance information that associates the S-NSSAI and NSAG-ID of all TAs in the PLMN, the memory of the terminal 20 can be saved.
　次に、本実施の形態に係る無線通信システムの動作例について説明する。 Next, an example of the operation of the wireless communication system according to this embodiment will be described.
　図４は、本発明の実施の形態に係る端末の動作について説明するための図である。端末２０は、当初、ＴＡ１０とＴＡ１１の境界から離れて配置され、周波数ｇを見つけることができず、セル１にキャンプ（セル１を選択）する。 FIG. 4 is a diagram for explaining the operation of the terminal according to the embodiment of the present invention. Terminal 20 is initially located away from the boundary between TA10 and TA11, cannot find frequency g, and camps on cell 1 (selects cell 1).
　ここで、端末２０は、セル１にブロードキャストされるＳＩＢとして、例えば、収容周波数ｆおよびＮＳＡＧ－ＩＤ＝ＴＡ１０Ｂの関連付けられた情報、収容周波数ｇおよびＮＳＡＧ－ＩＤ＝ＴＡ１０Ａの関連付けられた情報、および収容周波数ｈおよびＮＳＡＧ－ＩＤ＝ＴＡ１０Ｂの関連付けられた情報をＲＡＮ１０から受信する。 Here, the terminal 20 uses, as the SIB broadcast to the cell 1, information associated with the accommodation frequency f and NSAG-ID=TA10B, information associated with the accommodation frequency g and NSAG-ID=TA10A, and information associated with the accommodation frequency f and NSAG-ID=TA10A. Information associated with frequency h and NSAG-ID=TA10B is received from the RAN10.
　また、セル１を含むＴＡ１０への登録手順（図３）において、ＡＭＦ３１０が端末２０の登録エリアとしてＴＡ１０およびＴＡ１１を割り当てると決めた場合、端末２０は、ＴＡＣ＝ＴＡ１０、ＮＳＡＧ－ＩＤ＝ＴＡ１０Ａ、Ｓ－ＮＳＳＡＩ＝１と、ＴＡＣ＝ＴＡ１０、ＮＳＡＧ－ＩＤ＝ＴＡ１０Ｂ、Ｓ－ＮＳＳＡＩ＝２と、ＴＡＣ＝ＴＡ１１、ＮＳＡＧ－ＩＤ＝ＴＡ１１Ｘ、Ｓ－ＮＳＳＡＩ＝１と、ＴＡＣ＝ＴＡ１１、ＮＳＡＧ－ＩＤ＝ＴＡ１１Ｙ、Ｓ－ＮＳＳＡＩ＝２とを含む対応情報をＡＭＦ３１０から受信する。ここでは、ＮＳＡＧ－ＩＤとして、ＴＡ１０Ａ、ＴＡ１０Ｂ、ＴＡ１１Ｘ、ＴＡ１１Ｙ、としているが、ＴＡが分かれているならば、ＡＭＦ３１０は、ＮＳＡＧ－ＩＤに同じ値を割り当てても良い。 Further, in the registration procedure to TA10 including cell 1 (FIG. 3), if the AMF 310 decides to allocate TA10 and TA11 as the registration area of the terminal 20, the terminal 20 will have TAC=TA10, NSAG-ID=TA10A, S -NSSAI=1, TAC=TA10, NSAG-ID=TA10B, S-NSSAI=2, TAC=TA11, NSAG-ID=TA11X, S-NSSAI=1, TAC=TA11, NSAG-ID=TA11Y, The corresponding information including S-NSSAI=2 is received from the AMF 310. Here, the NSAG-IDs are TA10A, TA10B, TA11X, and TA11Y, but if the TAs are separate, the AMF 310 may assign the same value to the NSAG-IDs.
　また、端末２０は、ネットワークスライスの優先度について、Ｓ－ＮＳＳＡＩ＝１の優先度６とＳ－ＮＳＳＡＩ＝２の優先度４とを含む情報を有している。すると、端末２０は、上述した対応情報に基づいて、優先度の情報をＮＳＡＧ－ＩＤ＝ＴＡ１０Ａの優先度６とＮＳＡＧ－ＩＤ＝ＴＡ１０Ｂの優先度４とを含む情報に変換する。 Furthermore, the terminal 20 has information regarding the priorities of network slices, including priority 6 with S-NSSAI=1 and priority 4 with S-NSSAI=2. Then, the terminal 20 converts the priority information into information including priority 6 for NSAG-ID=TA10A and priority 4 for NSAG-ID=TA10B, based on the above-mentioned correspondence information.
　次に、端末２０が、ＴＡ１０とＴＡ１１の境界に移動し、まだＴＡ１０に含まれている間に、周波数gを検出する。そして、端末２０は、変換された優先度の情報に基づいて、ＮＳＡＧ－ＩＤ＝ＴＡ１０Ａの収容周波数ｇに対応するセル２を再選択することによって、Ｓ－ＮＳＳＡＩ＝１のネットワークスライスによる接続を利用することができる。 Next, the terminal 20 moves to the boundary between TA10 and TA11 and detects frequency g while still being included in TA10. Then, the terminal 20 uses the connection by the network slice of S-NSSAI=1 by reselecting the cell 2 corresponding to the accommodated frequency g of NSAG-ID=TA10A based on the converted priority information. can do.
　次に、比較のために、隣接ＴＡの対応情報を受信しない無線通信システムの動作例について説明する。 Next, for comparison, an example of the operation of a wireless communication system that does not receive correspondence information of neighboring TAs will be described.
　図５は、比較例に係る端末の動作について説明するための図である。端末２０は、当初、ＴＡ１０とＴＡ１１の境界から離れて配置され、周波数ｇを見つけることができず、セル１にキャンプ（セル１を選択）する。 FIG. 5 is a diagram for explaining the operation of a terminal according to a comparative example. Terminal 20 is initially located away from the boundary between TA10 and TA11, cannot find frequency g, and camps on cell 1 (selects cell 1).
　ここで、端末２０は、セル１にブロードキャストされるＳＩＢとして、例えば、収容周波数ｆおよびＮＳＡＧ－ＩＤ＝ＴＡ１０Ｂの関連付けられた情報、および収容周波数ｈおよびＮＳＡＧ－ＩＤ＝ＴＡ１０Ｂの関連付けられた情報をＲＡＮ１０から受信する。すなわち、端末２０は、収容周波数ｇおよびＮＳＡＧ－ＩＤ＝ＴＡ１０Ａの関連付けられた情報については、ＲＡＮ１０から受信しない。 Here, the terminal 20 transmits, for example, information associated with the accommodated frequency f and NSAG-ID=TA10B, and information associated with the accommodated frequency h and NSAG-ID=TA10B to the RAN10 as the SIB broadcast to the cell 1. Receive from. That is, the terminal 20 does not receive information associated with the accommodated frequency g and NSAG-ID=TA10A from the RAN 10.
　また、セル１を含むＴＡ１０への登録手順（図３）において、ＡＭＦ３１０が端末２０の登録エリアとしてＴＡ１０およびＴＡ１１を割り当てると決めた場合、端末２０は、ＴＡＣ＝ＴＡ１０、ＮＳＡＧ－ＩＤ＝ＴＡ１０Ｂ、Ｓ－ＮＳＳＡＩ＝２と、ＴＡＣ＝ＴＡ１１、ＮＳＡＧ－ＩＤ＝ＴＡ１１Ｘ、Ｓ－ＮＳＳＡＩ＝１とを含む対応情報をＡＭＦ３１０から受信する。ここでは、ＮＳＡＧ－ＩＤとして、ＴＡ１０Ｂ、ＴＡ１１Ｘ、としているが、ＴＡが分かれているならば、ＡＭＦ３１０は、ＮＳＡＧ－ＩＤに同じ値を割り当てても良い。 Further, in the registration procedure to TA10 including cell 1 (FIG. 3), if the AMF 310 decides to allocate TA10 and TA11 as the registration area of the terminal 20, the terminal 20 will have TAC=TA10, NSAG-ID=TA10B, S - Receive correspondence information from the AMF 310 including NSSAI=2, TAC=TA11, NSAG-ID=TA11X, S-NSSAI=1. Here, the NSAG-IDs are TA10B and TA11X, but if the TAs are separate, the AMF 310 may assign the same value to the NSAG-IDs.
　また、端末２０は、ネットワークスライスの優先度について、Ｓ－ＮＳＳＡＩ＝１の優先度６とＳ－ＮＳＳＡＩ＝２の優先度４とを含む情報を有している。すると、端末２０は、上述した対応情報に基づいて、優先度の情報をＮＳＡＧ－ＩＤ＝ＴＡ１０Ｂの優先度４を含む情報に変換する。すなわち、端末２０は、優先度の情報をＮＳＡＧ－ＩＤ＝ＴＡ１０Ａの優先度６を含む情報に変換することができない。 Furthermore, the terminal 20 has information regarding the priorities of network slices, including priority 6 with S-NSSAI=1 and priority 4 with S-NSSAI=2. Then, the terminal 20 converts the priority information into information including priority 4 of NSAG-ID=TA10B based on the correspondence information described above. That is, the terminal 20 cannot convert the priority information into information including priority 6 of NSAG-ID=TA10A.
　次に、端末２０が、ＴＡ１０とＴＡ１１の境界に移動し、まだＴＡ１０に含まれている間に、周波数gを検出する。しかし、端末２０は、変換された優先度の情報に基づいて、ＮＳＡＧ－ＩＤ＝ＴＡ１０Ａの収容周波数ｇに対応するセル２を再選択しないため、Ｓ－ＮＳＳＡＩ＝１のネットワークスライスによる接続を利用することができない。 Next, the terminal 20 moves to the boundary between TA10 and TA11 and detects frequency g while still being included in TA10. However, the terminal 20 does not reselect the cell 2 corresponding to the accommodated frequency g of NSAG-ID=TA10A based on the converted priority information, so it uses the connection by the network slice of S-NSSAI=1. I can't.
　本実施形態に係る無線通信システムによれば、端末２０は、在圏セルに対応するＴＡと隣接するＴＡとに対応するネットワークスライスに関するＳＩＢをＲＡＮ１０から受信し、また、当該ＳＩＢに含まれるＮＳＡＧ－ＩＤと、ネットワークスライスの識別子と、の対応情報をＡＭＦ３１０から受信することができる。これによって、ネットワークスライスに基づくセルの再選択を適切に実行することができる。 According to the wireless communication system according to the present embodiment, the terminal 20 receives, from the RAN 10, an SIB related to a network slice corresponding to a TA corresponding to a serving cell and an adjacent TA, and also receives an NSAG- Correspondence information between the ID and the network slice identifier can be received from the AMF 310. Thereby, cell reselection based on network slices can be appropriately performed.
　（装置構成）
　次に、これまでに説明した処理及び動作を実施する基地局１０、端末２０および各種のネットワークノードの機能構成例を説明する。基地局１０、端末２０および各種のネットワークノードは、上述した実施例を実施する機能を含む。ただし、基地局１０、端末２０および各種のネットワークノードは、それぞれ、実施例の中の一部の機能のみを備えることとしてもよい。 (Device configuration)
Next, examples of functional configurations of the base station 10, terminal 20, and various network nodes that implement the processes and operations described above will be described. Base station 10, terminal 20, and various network nodes include functionality to implement the embodiments described above. However, the base station 10, the terminal 20, and various network nodes may each have only some of the functions in the embodiment.
　＜基地局１０及びネットワークノード＞
　図６は、基地局１０の機能構成の一例を示す図である。図６に示されるように、基地局１０は、送信部１１０と、受信部１２０と、設定部１３０と、制御部１４０とを有する。図６に示される機能構成は一例に過ぎない。本発明の実施の形態に係る動作を実施できるのであれば、機能区分及び機能部の名称はどのようなものでもよい。なお、ネットワークノードは、基地局１０と同様の機能構成を有してもよい。また、システムアーキテクチャ上で複数の異なる機能を有するネットワークノードは、機能ごとに分離された複数のネットワークノードから構成されてもよい。 <Base station 10 and network node>
FIG. 6 is a diagram showing an example of the functional configuration of the base station 10. As shown in FIG. 6, base station 10 includes a transmitting section 110, a receiving section 120, a setting section 130, and a control section 140. The functional configuration shown in FIG. 6 is only an example. As long as the operations according to the embodiments of the present invention can be carried out, the functional divisions and functional parts may have any names. Note that the network node may have the same functional configuration as the base station 10. Further, a network node having a plurality of different functions in the system architecture may be configured from a plurality of network nodes separated for each function.
　送信部１１０は、端末２０又は他のネットワークノードに送信する信号を生成し、当該信号を有線又は無線で送信する機能を含む。受信部１２０は、端末２０又は他のネットワークノードから送信された各種の信号を受信し、受信した信号から、例えばより上位のレイヤの情報を取得する機能を含む。 The transmitting unit 110 includes a function of generating a signal to be transmitted to the terminal 20 or another network node, and transmitting the signal by wire or wirelessly. The receiving unit 120 includes a function of receiving various signals transmitted from the terminal 20 or other network nodes, and acquiring, for example, information on a higher layer from the received signals.
　設定部１３０は、予め設定される設定情報、及び、端末２０に送信する各種の設定情報を記憶装置に格納し、必要に応じて記憶装置から読み出す。設定情報の内容は、例えば、ＮＴＮを利用する通信に係る設定等である。 The setting unit 130 stores preset setting information and various setting information to be sent to the terminal 20 in a storage device, and reads them from the storage device as necessary. The contents of the setting information include, for example, settings related to communication using NTN.
　制御部１４０は、実施例において説明したように、ＮＴＮを利用する通信に係る処理を行う。また、制御部１４０は、端末２０との通信に係る処理を行う。また、制御部１４０は、端末２０の地理的位置検証に係る処理を行う。制御部１４０における信号送信に関する機能部を送信部１１０に含め、制御部１４０における信号受信に関する機能部を受信部１２０に含めてもよい。 As explained in the embodiment, the control unit 140 performs processing related to communication using NTN. Further, the control unit 140 performs processing related to communication with the terminal 20. Further, the control unit 140 performs processing related to verifying the geographical position of the terminal 20. A functional unit related to signal transmission in the control unit 140 may be included in the transmitting unit 110, and a functional unit related to signal reception in the control unit 140 may be included in the receiving unit 120.
　＜端末２０＞
　図７は、端末２０の機能構成の一例を示す図である。図７に示されるように、端末２０は、送信部２１０と、受信部２２０と、設定部２３０と、制御部２４０とを有する。図７に示される機能構成は一例に過ぎない。本発明の実施の形態に係る動作を実施できるのであれば、機能区分及び機能部の名称はどのようなものでもよい。端末２０が装着するＵＳＩＭは、端末２０と同様に、送信部２１０と、受信部２２０と、設定部２３０と、制御部２４０とを有してもよい。 <Terminal 20>
FIG. 7 is a diagram showing an example of the functional configuration of the terminal 20. As shown in FIG. 7, the terminal 20 includes a transmitting section 210, a receiving section 220, a setting section 230, and a control section 240. The functional configuration shown in FIG. 7 is only an example. As long as the operations according to the embodiments of the present invention can be carried out, the functional divisions and functional parts may have any names. The USIM attached to the terminal 20 may include a transmitting section 210, a receiving section 220, a setting section 230, and a control section 240, like the terminal 20.
　送信部２１０は、送信データから送信信号を作成し、当該送信信号を無線で送信する。受信部２２０は、各種の信号を無線受信し、受信した物理レイヤの信号からより上位のレイヤの信号を取得する。また、受信部２２０は、ネットワークノードから送信されるＮＲ－ＰＳＳ、ＮＲ－ＳＳＳ、ＮＲ－ＰＢＣＨ、ＤＬ／ＵＬ制御信号又は参照信号等を受信する機能を有する。 The transmitter 210 creates a transmission signal from the transmission data and wirelessly transmits the transmission signal. The receiving unit 220 wirelessly receives various signals and obtains higher layer signals from the received physical layer signals. Furthermore, the receiving unit 220 has a function of receiving NR-PSS, NR-SSS, NR-PBCH, DL/UL control signals, reference signals, etc. transmitted from network nodes.
　設定部２３０は、受信部２２０によりネットワークノードから受信した各種の設定情報を記憶装置に格納し、必要に応じて記憶装置から読み出す。また、設定部２３０は、予め設定される設定情報も格納する。 The setting unit 230 stores various setting information received from the network node by the receiving unit 220 in a storage device, and reads it from the storage device as necessary. The setting unit 230 also stores setting information that is set in advance.
　本実施の形態のネットワークノードは、下記の各項に示すネットワークノードとして構成されてもよい。また、下記の通信方法が実施されてもよい。 The network node of this embodiment may be configured as a network node shown in each section below. Additionally, the following communication method may be implemented.
　＜本実施の形態に関する構成＞
（第１項）
　トラッキングエリアごとに、ネットワークスライスの識別子と、前記ネットワークスライスを前記トラッキングエリアに関するシステム情報において識別するための識別子とを対応させる対応情報を、他のネットワークノードから受信する受信部と、
　端末からの登録要求に応じて、前記対応情報を含む登録許諾の応答を前記端末に送信する送信部と、を備え、
　トラッキングエリアごとの前記対応情報は、前記端末の在圏セルに対応するトラッキングエリアと、前記端末の在圏セルに対応するトラッキングエリアに隣接するトラッキングエリアと、で利用可能なネットワークスライスの識別子を含み、
　前記トラッキングエリアに関する前記システム情報は、前記端末の在圏セルに対応するトラッキングエリアと、前記端末の在圏セルに対応するトラッキングエリアに隣接するトラッキングエリアと、に関する情報を含む、
　ネットワークノード。
（第２項）
　前記対応情報は、トラッキングエリアを識別するためのコードと、前記ネットワークスライスの識別子と、前記ネットワークスライスを前記システム情報において識別するための識別子とを含む、
　第１項に記載のネットワークノード。
（第３項）
　前記システム情報は、前記ネットワークスライスを前記トラッキングエリアに関するシステム情報において識別するための識別子と、前記トラッキングエリアで前記ネットワークスライスを収容する周波数と、前記周波数の優先度とを含む、
　第１項または第２項に記載のネットワークノード。
（第４項）
　トラッキングエリアごとに、ネットワークスライスの識別子と、前記ネットワークスライスを前記トラッキングエリアに関するシステム情報において識別するための識別子とを対応させる対応情報を、他のネットワークノードから受信するステップと、
　端末からの登録要求に応じて、前記対応情報を含む登録許諾の応答を前記端末に送信するステップと、を備え、
　トラッキングエリアごとの前記対応情報は、前記端末の在圏セルに対応するトラッキングエリアと、前記端末の在圏セルに対応するトラッキングエリアに隣接するトラッキングエリアと、で利用可能なネットワークスライスの識別子を含み、
　前記トラッキングエリアに関する前記システム情報は、前記端末の在圏セルに対応するトラッキングエリアと、前記端末の在圏セルに対応するトラッキングエリアに隣接するトラッキングエリアと、に関する情報を含む、
　ネットワークノードが実行する通信方法。 <Configuration related to this embodiment>
(Section 1)
a receiving unit that receives, for each tracking area, correspondence information that associates an identifier of a network slice with an identifier for identifying the network slice in system information regarding the tracking area from another network node;
a transmitter that transmits a registration permission response including the correspondence information to the terminal in response to a registration request from the terminal;
The correspondence information for each tracking area includes identifiers of network slices that can be used in a tracking area corresponding to a cell in which the terminal is located and a tracking area adjacent to a tracking area corresponding to the cell in which the terminal is located. ,
The system information regarding the tracking area includes information regarding a tracking area corresponding to the cell in which the terminal is located and a tracking area adjacent to the tracking area corresponding to the cell in which the terminal is located.
network node.
(Section 2)
The correspondence information includes a code for identifying a tracking area, an identifier for the network slice, and an identifier for identifying the network slice in the system information.
Network node according to paragraph 1.
(Section 3)
The system information includes an identifier for identifying the network slice in system information regarding the tracking area, a frequency that accommodates the network slice in the tracking area, and a priority of the frequency.
The network node according to item 1 or 2.
(Section 4)
receiving, for each tracking area, correspondence information from other network nodes that associates an identifier of a network slice with an identifier for identifying the network slice in system information regarding the tracking area;
a step of transmitting a registration permission response including the correspondence information to the terminal in response to a registration request from the terminal;
The correspondence information for each tracking area includes identifiers of network slices that can be used in a tracking area corresponding to a cell in which the terminal is located and a tracking area adjacent to a tracking area corresponding to the cell in which the terminal is located. ,
The system information regarding the tracking area includes information regarding a tracking area corresponding to the cell in which the terminal is located and a tracking area adjacent to the tracking area corresponding to the cell in which the terminal is located.
A communication method performed by network nodes.
　上記構成のいずれによっても、ネットワークスライスに基づくセルの再選択を適切に実行することを可能とする技術が提供される。第１項、第２項によれば、トラッキングエリアを識別するためのコードをシステム情報に含める必要が無いため、システム情報を短くすることができる。第３項によれば、端末による収容周波数の優先度に基づいてネットワークスライスに基づくセルの再選択を実現させることができる。 Any of the above configurations provides a technique that makes it possible to appropriately perform cell reselection based on network slices. According to the first and second terms, it is not necessary to include a code for identifying the tracking area in the system information, so the system information can be shortened. According to the third term, it is possible to realize cell reselection based on network slices based on the priority of accommodation frequency by the terminal.
　（ハードウェア構成）
　上記実施形態の説明に用いたブロック図（図６及び図７）は、機能単位のブロックを示している。これらの機能ブロック（構成部）は、ハードウェア及びソフトウェアの少なくとも一方の任意の組み合わせによって実現される。また、各機能ブロックの実現方法は特に限定されない。すなわち、各機能ブロックは、物理的又は論理的に結合した１つの装置を用いて実現されてもよいし、物理的又は論理的に分離した２つ以上の装置を直接的又は間接的に（例えば、有線、無線などを用いて）接続し、これら複数の装置を用いて実現されてもよい。機能ブロックは、上記１つの装置又は上記複数の装置にソフトウェアを組み合わせて実現されてもよい。 (Hardware configuration)
The block diagrams (FIGS. 6 and 7) used to explain the above embodiments show blocks in functional units. These functional blocks (components) are realized by any combination of at least one of hardware and software. Furthermore, the method for realizing each functional block is not particularly limited. That is, each functional block may be realized using one physically or logically coupled device, or may be realized using two or more physically or logically separated devices directly or indirectly (e.g. , wired, wireless, etc.) and may be realized using a plurality of these devices. The functional block may be realized by combining software with the one device or the plurality of devices.
　機能には、判断、決定、判定、計算、算出、処理、導出、調査、探索、確認、受信、送信、出力、アクセス、解決、選択、選定、確立、比較、想定、期待、見做し、報知（broadcasting）、通知（notifying）、通信（communicating）、転送（forwarding）、構成（configuring）、再構成（reconfiguring）、割り当て（allocating、mapping）、割り振り（assigning）などがあるが、これらに限られない。たとえば、送信を機能させる機能ブロック（構成部）は、送信部（transmitting　unit）や送信機（transmitter）と呼称される。いずれも、上述したとおり、実現方法は特に限定されない。 Functions include judgment, decision, judgment, calculation, calculation, processing, derivation, investigation, exploration, confirmation, reception, transmission, output, access, resolution, selection, selection, establishment, comparison, assumption, expectation, consideration, These include, but are not limited to, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, and assigning. I can't do it. For example, a functional block (configuration unit) that performs transmission is called a transmitting unit or a transmitter. In either case, as described above, the implementation method is not particularly limited.
　例えば、本開示の一実施の形態におけるネットワークノード、端末２０等は、本開示の無線通信方法の処理を行うコンピュータとして機能してもよい。図８は、本開示の一実施の形態に係る基地局１０及び端末２０のハードウェア構成の一例を示す図である。ネットワークノードは、基地局１０と同様のハードウェア構成を有してもよい。ＵＳＩＭは、端末２０と同様のハードウェア構成を有してもよい。上述の基地局１０及び端末２０は、物理的には、プロセッサ１００１、記憶装置１００２、補助記憶装置１００３、通信装置１００４、入力装置１００５、出力装置１００６、バス１００７などを含むコンピュータ装置として構成されてもよい。 For example, the network node, terminal 20, etc. in an embodiment of the present disclosure may function as a computer that performs processing of the wireless communication method of the present disclosure. FIG. 8 is a diagram illustrating an example of the hardware configuration of the base station 10 and the terminal 20 according to an embodiment of the present disclosure. The network node may have a similar hardware configuration to the base station 10. The USIM may have the same hardware configuration as the terminal 20. The base station 10 and terminal 20 described above are 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. Good too.
　なお、以下の説明では、「装置」という文言は、回路、デバイス、ユニット等に読み替えることができる。基地局１０及び端末２０のハードウェア構成は、図に示した各装置を１つ又は複数含むように構成されてもよいし、一部の装置を含まずに構成されてもよい。 Note that in the following description, the word "apparatus" can be read as a circuit, a device, a unit, etc. The hardware configuration of the base station 10 and the terminal 20 may be configured to include one or more of each device shown in the figure, or may be configured not to include some of the devices.
　基地局１０及び端末２０における各機能は、プロセッサ１００１、記憶装置１００２等のハードウェア上に所定のソフトウェア（プログラム）を読み込ませることによって、プロセッサ１００１が演算を行い、通信装置１００４による通信を制御したり、記憶装置１００２及び補助記憶装置１００３におけるデータの読み出し及び書き込みの少なくとも一方を制御したりすることによって実現される。 Each function in the base station 10 and the terminal 20 is performed by loading predetermined software (programs) onto hardware such as the processor 1001 and the storage device 1002, so that the processor 1001 performs calculations and controls communication by the communication device 1004. This is realized by controlling at least one of reading and writing data in the storage device 1002 and the auxiliary storage device 1003.
　プロセッサ１００１は、例えば、オペレーティングシステムを動作させてコンピュータ全体を制御する。プロセッサ１００１は、周辺装置とのインタフェース、制御装置、演算装置、レジスタ等を含む中央処理装置（ＣＰＵ：Central Processing Unit）で構成されてもよい。例えば、上述の制御部１４０、制御部２４０等は、プロセッサ１００１によって実現されてもよい。 The processor 1001, for example, operates an operating system to control the entire computer. The processor 1001 may be configured with a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic unit, registers, and the like. For example, the above-described control unit 140, control unit 240, etc. may be implemented by the processor 1001.
　また、プロセッサ１００１は、プログラム（プログラムコード）、ソフトウェアモジュール又はデータ等を、補助記憶装置１００３及び通信装置１００４の少なくとも一方から記憶装置１００２に読み出し、これらに従って各種の処理を実行する。プログラムとしては、上述の実施の形態において説明した動作の少なくとも一部をコンピュータに実行させるプログラムが用いられる。例えば、図６に示した基地局１０の制御部１４０は、記憶装置１００２に格納され、プロセッサ１００１で動作する制御プログラムによって実現されてもよい。また、例えば、図７に示した端末２０の制御部２４０は、記憶装置１００２に格納され、プロセッサ１００１で動作する制御プログラムによって実現されてもよい。上述の各種処理は、１つのプロセッサ１００１によって実行される旨を説明してきたが、２以上のプロセッサ１００１により同時又は逐次に実行されてもよい。プロセッサ１００１は、１以上のチップによって実装されてもよい。なお、プログラムは、電気通信回線を介してネットワークから送信されてもよい。 Furthermore, the processor 1001 reads programs (program codes), software modules, 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 in accordance with these. As the program, a program that causes a computer to execute at least part of the operations described in the above embodiments is used. For example, the control unit 140 of the base station 10 shown in FIG. 6 may be realized by a control program stored in the storage device 1002 and operated on the processor 1001. Further, for example, the control unit 240 of the terminal 20 shown in FIG. 7 may be realized by a control program stored in the storage device 1002 and operated on the processor 1001. Although the various processes described above have been described as being executed by one processor 1001, they may be executed by two or more processors 1001 simultaneously or sequentially. Processor 1001 may be implemented by one or more chips. Note that the program may be transmitted from a network via a telecommunications line.
　記憶装置１００２は、コンピュータ読み取り可能な記録媒体であり、例えば、ＲＯＭ（Read Only Memory）、ＥＰＲＯＭ（Erasable Programmable ROM）、ＥＥＰＲＯＭ（Electrically Erasable Programmable ROM）、ＲＡＭ（Random Access Memory）等の少なくとも１つによって構成されてもよい。記憶装置１００２は、レジスタ、キャッシュ、メインメモリ（主記憶装置）等と呼ばれてもよい。記憶装置１００２は、本開示の一実施の形態に係る通信方法を実施するために実行可能なプログラム（プログラムコード）、ソフトウェアモジュール等を保存することができる。 The storage device 1002 is a computer-readable recording medium, such as at least one of ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electrically Erasable Programmable ROM), RAM (Random Access Memory), etc. may be configured. The storage device 1002 may be called a register, cache, main memory, or the like. The storage device 1002 can store executable programs (program codes), software modules, and the like to implement a communication method according to an embodiment of the present disclosure.
　補助記憶装置１００３は、コンピュータ読み取り可能な記録媒体であり、例えば、ＣＤ－ＲＯＭ（Compact Disc ROM）等の光ディスク、ハードディスクドライブ、フレキシブルディスク、光磁気ディスク（例えば、コンパクトディスク、デジタル多用途ディスク、Ｂｌｕ－ｒａｙ（登録商標）ディスク）、スマートカード、フラッシュメモリ（例えば、カード、スティック、キードライブ）、フロッピー（登録商標）ディスク、磁気ストリップ等の少なくとも１つによって構成されてもよい。上述の記憶媒体は、例えば、記憶装置１００２及び補助記憶装置１００３の少なくとも一方を含むデータベース、サーバその他の適切な媒体であってもよい。 The auxiliary storage device 1003 is a computer-readable recording medium, such as an optical disk such as a CD-ROM (Compact Disc ROM), a hard disk drive, a flexible disk, a magneto-optical disk (for example, a compact disk, a digital versatile disk, a Blu-ray disk, etc.). -ray disk), smart card, flash memory (eg, card, stick, key drive), floppy disk, magnetic strip, etc. The above-mentioned storage medium may be, for example, a database including at least one of the storage device 1002 and the auxiliary storage device 1003, a server, or other suitable medium.
　通信装置１００４は、有線ネットワーク及び無線ネットワークの少なくとも一方を介してコンピュータ間の通信を行うためのハードウェア（送受信デバイス）であり、例えばネットワークデバイス、ネットワークコントローラ、ネットワークカード、通信モジュールなどともいう。通信装置１００４は、例えば周波数分割複信（ＦＤＤ：Frequency　Division　Duplex）及び時分割複信（ＴＤＤ：Time　Division　Duplex）の少なくとも一方を実現するために、高周波スイッチ、デュプレクサ、フィルタ、周波数シンセサイザなどを含んで構成されてもよい。例えば、送受信アンテナ、アンプ部、送受信部、伝送路インタフェース等は、通信装置１００４によって実現されてもよい。送受信部は、送信部と受信部とで、物理的に、または論理的に分離された実装がなされてもよい。 The communication device 1004 is hardware (transmission/reception device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as a network device, network controller, network card, communication module, etc., for example. The communication device 1004 includes, for example, a high frequency switch, a duplexer, a filter, a frequency synthesizer, etc. in order to realize at least one of frequency division duplex (FDD) and time division duplex (TDD). It may be composed of. For example, a transmitting/receiving antenna, an amplifier section, a transmitting/receiving section, a transmission line interface, etc. may be realized by the communication device 1004. The transmitting and receiving unit may be physically or logically separated into a transmitting unit and a receiving unit.
　入力装置１００５は、外部からの入力を受け付ける入力デバイス（例えば、キーボード、マウス、マイクロフォン、スイッチ、ボタン、センサ等）である。出力装置１００６は、外部への出力を実施する出力デバイス（例えば、ディスプレイ、スピーカ、LEDランプ等）である。なお、入力装置１００５及び出力装置１００６は、一体となった構成（例えば、タッチパネル）であってもよい。 The input device 1005 is an input device (eg, keyboard, mouse, microphone, switch, button, sensor, etc.) that accepts input from the outside. The output device 1006 is an output device (for example, a display, a speaker, an LED lamp, etc.) that performs output to the outside. Note that the input device 1005 and the output device 1006 may have an integrated configuration (for example, a touch panel).
　また、プロセッサ１００１及び記憶装置１００２等の各装置は、情報を通信するためのバス１００７によって接続される。バス１００７は、単一のバスを用いて構成されてもよいし、装置間ごとに異なるバスを用いて構成されてもよい。 Further, 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 for each device.
　また、基地局１０及び端末２０は、マイクロプロセッサ、デジタル信号プロセッサ（ＤＳＰ：Digital Signal Processor）、ＡＳＩＣ（Application Specific Integrated Circuit）、ＰＬＤ（Programmable Logic Device）、ＦＰＧＡ（Field Programmable Gate Array）等のハードウェアを含んで構成されてもよく、当該ハードウェアにより、各機能ブロックの一部又は全てが実現されてもよい。例えば、プロセッサ１００１は、これらのハードウェアの少なくとも１つを用いて実装されてもよい。 The base station 10 and the terminal 20 also include hardware such as a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), and a field programmable gate array (FPGA). A part or all of each functional block may be realized by the hardware. For example, processor 1001 may be implemented using at least one of these hardwares.
　図９に車両２００１の構成例を示す。図９に示すように、車両２００１は駆動部２００２、操舵部２００３、アクセルペダル２００４、ブレーキペダル２００５、シフトレバー２００６、前輪２００７、後輪２００８、車軸２００９、電子制御部２０１０、各種センサ２０２１～２０２９、情報サービス部２０１２と通信モジュール２０１３を備える。本開示において説明した各態様／実施形態は、車両２００１に搭載される通信装置に適用されてもよく、例えば、通信モジュール２０１３に適用されてもよい。 FIG. 9 shows an example of the configuration of the vehicle 2001. As shown in FIG. 9, the vehicle 2001 includes a drive unit 2002, a steering unit 2003, an accelerator pedal 2004, a brake pedal 2005, a shift lever 2006, a front wheel 2007, a rear wheel 2008, an axle 2009, an electronic control unit 2010, and various sensors 2021 to 2029. , an information service section 2012 and a communication module 2013. Each aspect/embodiment described in this disclosure may be applied to a communication device mounted on vehicle 2001, for example, may be applied to communication module 2013.
　駆動部２００２は例えば、エンジン、モータ、エンジンとモータのハイブリッドで構成される。操舵部２００３は、少なくともステアリングホイール（ハンドルとも呼ぶ）を含み、ユーザによって操作されるステアリングホイールの操作に基づいて前輪及び後輪の少なくとも一方を操舵するように構成される。 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 referred to as a steering wheel), 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.
　電子制御部２０１０は、マイクロプロセッサ２０３１、メモリ（ROM、RAM）２０３２、通信ポート（ＩＯポート）２０３３で構成される。電子制御部２０１０には、車両２００１に備えられた各種センサ２０２１～２０２９からの信号が入力される。電子制御部２０１０は、ＥＣＵ（Electronic Control Unit）と呼んでも良い。 The electronic control unit 2010 is composed of a microprocessor 2031, memory (ROM, RAM) 2032, and communication port (IO port) 2033. Signals from various sensors 2021 to 2029 provided in the vehicle 2001 are input to the electronic control unit 2010. The electronic control unit 2010 may also be called an ECU (Electronic Control Unit).
　各種センサ２０２１～２０２９からの信号としては、モータの電流をセンシングする電流センサ２０２１からの電流信号、回転数センサ２０２２によって取得された前輪や後輪の回転数信号、空気圧センサ２０２３によって取得された前輪や後輪の空気圧信号、車速センサ２０２４によって取得された車速信号、加速度センサ２０２５によって取得された加速度信号、アクセルペダルセンサ２０２９によって取得されたアクセルペダルの踏み込み量信号、ブレーキペダルセンサ２０２６によって取得されたブレーキペダルの踏み込み量信号、シフトレバーセンサ２０２７によって取得されたシフトレバーの操作信号、物体検知センサ２０２８によって取得された障害物、車両、歩行者等を検出するための検出信号等がある。 Signals from various sensors 2021 to 2029 include a current signal from a current sensor 2021 that senses the motor current, a front wheel and rear wheel rotation speed signal obtained by a rotation speed sensor 2022, and a front wheel rotation speed signal obtained by an air pressure sensor 2023. and rear wheel air pressure signals, vehicle speed signals acquired by vehicle speed sensor 2024, acceleration signals acquired by acceleration sensor 2025, accelerator pedal depression amount signals acquired by accelerator pedal sensor 2029, and brake pedal sensor 2026. These include a brake pedal depression amount signal, a shift lever operation signal acquired by the shift lever sensor 2027, a detection signal for detecting obstacles, vehicles, pedestrians, etc. acquired by the object detection sensor 2028, and the like.
　情報サービス部２０１２は、カーナビゲーションシステム、オーディオシステム、スピーカ、テレビ、ラジオといった、運転情報、交通情報、エンターテイメント情報等の各種情報を提供（出力）するための各種機器と、これらの機器を制御する１つ以上のＥＣＵとから構成される。情報サービス部２０１２は、外部装置から通信モジュール２０１３等を介して取得した情報を利用して、車両２００１の乗員に各種マルチメディア情報及びマルチメディアサービスを提供する。 The information service department 2012 controls various devices such as car navigation systems, audio systems, speakers, televisions, and radios that provide (output) various information such as driving information, traffic information, and entertainment information, and these devices. It is composed of one or more ECUs. The information service unit 2012 provides various multimedia information and multimedia services to the occupants of the vehicle 2001 using information acquired from an external device via the communication module 2013 and the like.
　情報サービス部２０１２は、外部からの入力を受け付ける入力デバイス（例えば、キーボード、マウス、マイクロフォン、スイッチ、ボタン、センサ、タッチパネルなど）を含んでもよいし、外部への出力を実施する出力デバイス（例えば、ディスプレイ、スピーカー、ＬＥＤランプ、タッチパネルなど）を含んでもよい。 The information service department 2012 may include an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, a touch panel, etc.) that accepts input from the outside, and an output device that performs output to the outside (for example, display, speaker, LED lamp, touch panel, etc.).
　運転支援システム部２０３０は、ミリ波レーダ、ＬｉＤＡＲ（Light Detection and Ranging）、カメラ、測位ロケータ（例えば、ＧＮＳＳ等）、地図情報（例えば、高精細（ＨＤ）マップ、自動運転車（ＡＶ）マップ等）、ジャイロシステム（例えば、ＩＭＵ（Inertial Measurement Unit）、ＩＮＳ（Inertial Navigation System）等）、ＡＩ（Artificial Intelligence）チップ、ＡＩプロセッサといった、事故を未然に防止したりドライバの運転負荷を軽減したりするための機能を提供するための各種機器と、これらの機器を制御する１つ以上のＥＣＵとから構成される。また、運転支援システム部２０３０は、通信モジュール２０１３を介して各種情報を送受信し、運転支援機能又は自動運転機能を実現する。 The driving support system unit 2030 includes a millimeter wave radar, LiDAR (Light Detection and Ranging), a camera, a positioning locator (for example, GNSS, etc.), map information (for example, a high-definition (HD) map, an autonomous vehicle (AV) map, etc.) ), gyro systems (e.g., IMU (Inertial Measurement Unit), INS (Inertial Navigation System), etc.), AI (Artificial Intelligence) chips, and AI processors that prevent accidents and reduce the driver's driving burden. The system is comprised of various devices that provide functions for the purpose and one or more ECUs that control these devices. Further, the driving support system unit 2030 transmits and receives various information via the communication module 2013, and realizes a driving support function or an automatic driving function.
　通信モジュール２０１３は通信ポートを介して、マイクロプロセッサ２０３１および車両２００１の構成要素と通信することができる。例えば、通信モジュール２０１３は通信ポート２０３３を介して、車両２００１に備えられた駆動部２００２、操舵部２００３、アクセルペダル２００４、ブレーキペダル２００５、シフトレバー２００６、前輪２００７、後輪２００８、車軸２００９、電子制御部２０１０内のマイクロプロセッサ２０３１及びメモリ（ＲＯＭ、ＲＡＭ）２０３２、センサ２０２１～２９との間でデータを送受信する。 Communication module 2013 can communicate with microprocessor 2031 and components of vehicle 2001 via a communication port. For example, the communication module 2013 communicates with the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, front wheels 2007, rear wheels 2008, axle 2009, electronic Data is transmitted and received between the microprocessor 2031, memory (ROM, RAM) 2032, and sensors 2021 to 29 in the control unit 2010.
　通信モジュール２０１３は、電子制御部２０１０のマイクロプロセッサ２０３１によって制御可能であり、外部装置と通信を行うことが可能な通信デバイスである。例えば、外部装置との間で無線通信を介して各種情報の送受信を行う。通信モジュール２０１３は、電子制御部２０１０の内部と外部のどちらにあってもよい。外部装置は、例えば、基地局、移動局等であってもよい。 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 external devices. For example, various information is transmitted and received with an 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, or the like.
　通信モジュール２０１３は、電子制御部２０１０に入力された上述の各種センサ２０２１－２０２９からの信号、当該信号に基づいて得られる情報、及び情報サービス部２０１２を介して得られる外部（ユーザ）からの入力に基づく情報、の少なくとも１つを、無線通信を介して外部装置へ送信してもよい。電子制御部２０１０、各種センサ２０２１－２０２９、情報サービス部２０１２などは、入力を受け付ける入力部と呼ばれてもよい。例えば、通信モジュール２０１３によって送信されるＰＵＳＣＨは、上記入力に基づく情報を含んでもよい。 The communication module 2013 receives signals from the various sensors 2021 to 2029 described above that are input to the electronic control unit 2010, information obtained based on the signals, and input from the outside (user) obtained via the information service unit 2012. At least one of the information based on the information may be transmitted to an external device via wireless communication. The electronic control unit 2010, various sensors 2021-2029, information service unit 2012, etc. may be called an input unit that receives input. For example, the PUSCH transmitted by the communication module 2013 may include information based on the above input.
　通信モジュール２０１３は、外部装置から送信されてきた種々の情報（交通情報、信号情報、車間情報等）を受信し、車両２００１に備えられた情報サービス部２０１２へ表示する。また、通信モジュール２０１３は、外部装置から受信した種々の情報をマイクロプロセッサ２０３１によって利用可能なメモリ２０３２へ記憶する。メモリ２０３２に記憶された情報に基づいて、マイクロプロセッサ２０３１が車両２００１に備えられた駆動部２００２、操舵部２００３、アクセルペダル２００４、ブレーキペダル２００５、シフトレバー２００６、前輪２００７、後輪２００８、車軸２００９、センサ２０２１～２０２９等の制御を行ってもよい。 The communication module 2013 receives various information (traffic information, signal information, inter-vehicle information, etc.) transmitted from an external device, and displays it on the information service section 2012 provided in the vehicle 2001. Communication module 2013 also stores various information received from external devices into memory 2032 that can be used by microprocessor 2031 . Based on the information stored in the memory 2032, the microprocessor 2031 controls the drive section 2002, steering section 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, front wheel 2007, rear wheel 2008, and axle 2009 provided in the vehicle 2001. , sensors 2021 to 2029, etc. may be controlled.
　（実施形態の補足）
　以上、本発明の実施の形態を説明してきたが、開示される発明はそのような実施形態に限定されず、当業者は様々な変形例、修正例、代替例、置換例等を理解するであろう。発明の理解を促すため具体的な数値例を用いて説明がなされたが、特に断りのない限り、それらの数値は単なる一例に過ぎず適切な如何なる値が使用されてもよい。上記の説明における項目の区分けは本発明に本質的ではなく、２以上の項目に記載された事項が必要に応じて組み合わせて使用されてよいし、ある項目に記載された事項が、別の項目に記載された事項に（矛盾しない限り）適用されてよい。機能ブロック図における機能部又は処理部の境界は必ずしも物理的な部品の境界に対応するとは限らない。複数の機能部の動作が物理的には１つの部品で行われてもよいし、あるいは１つの機能部の動作が物理的には複数の部品により行われてもよい。実施の形態で述べた処理手順については、矛盾の無い限り処理の順序を入れ替えてもよい。処理説明の便宜上、基地局１０及び端末２０は機能的なブロック図を用いて説明されたが、そのような装置はハードウェアで、ソフトウェアで又はそれらの組み合わせで実現されてもよい。本発明の実施の形態に従って基地局１０が有するプロセッサにより動作するソフトウェア及び本発明の実施の形態に従って端末２０が有するプロセッサにより動作するソフトウェアはそれぞれ、ランダムアクセスメモリ（ＲＡＭ）、フラッシュメモリ、読み取り専用メモリ（ＲＯＭ）、ＥＰＲＯＭ、ＥＥＰＲＯＭ、レジスタ、ハードディスク（ＨＤＤ）、リムーバブルディスク、ＣＤ－ＲＯＭ、データベース、サーバその他の適切な如何なる記憶媒体に保存されてもよい。 (Supplementary information on the embodiment)
Although the embodiments of the present invention have been described above, the disclosed invention is not limited to such embodiments, and those skilled in the art will understand various modifications, modifications, alternatives, replacements, etc. Probably. Although the invention has been explained using specific numerical examples to facilitate understanding of the invention, unless otherwise specified, these numerical values are merely examples, and any appropriate values may be used. The classification of items in the above explanation is not essential to the present invention, and matters described in two or more items may be used in combination as necessary, and matters described in one item may be used in another item. may be applied to the matters described in (unless inconsistent). The boundaries of functional units or processing units in the functional block diagram do not necessarily correspond to the boundaries of physical components. The operations of a plurality of functional sections may be physically performed by one component, or the operations of one functional section may be physically performed by a plurality of components. Regarding the processing procedures described in the embodiments, the order of processing may be changed as long as there is no contradiction. Although the base station 10 and the terminal 20 have been described using functional block diagrams for convenience of process description, such devices may be implemented in hardware, software, or a combination thereof. Software operated by the processor included in the base station 10 according to the embodiment of the present invention and software operated by the processor included in the terminal 20 according to the embodiment of the present invention are respectively random access memory (RAM), flash memory, and read-only memory. (ROM), EPROM, EEPROM, register, hard disk (HDD), removable disk, CD-ROM, database, server, or any other suitable storage medium.
　また、情報の通知は、本開示で説明した態様／実施形態に限られず、他の方法を用いて行われてもよい。例えば、情報の通知は、物理レイヤシグナリング（例えば、ＤＣＩ（Downlink Control Information）、ＵＣＩ（Uplink Control Information））、上位レイヤシグナリング（例えば、ＲＲＣ（Radio Resource Control）シグナリング、ＭＡＣ（Medium Access Control）シグナリング）、報知情報（ＭＩＢ（Master Information Block）、ＳＩＢ（System Information Block））、その他の信号又はこれらの組み合わせによって実施されてもよい。また、ＲＲＣシグナリングは、ＲＲＣメッセージと呼ばれてもよく、例えば、ＲＲＣ接続セットアップ（RRC Connection Setup）メッセージ、ＲＲＣ接続再構成（RRC Connection Reconfiguration）メッセージ等であってもよい。 Furthermore, the notification of information is not limited to the aspects/embodiments described in this disclosure, and may be performed using other methods. For example, the notification of information may be physical layer signaling (e.g., DCI (Downlink Control Information), UCI (Uplink Control Information)), upper layer signaling (e.g., RRC (Radio Resource Control) signaling, MAC (Medium Access Control) signaling). , broadcast information (MIB (Master Information Block), SIB (System Information Block)), other signals, or a combination thereof. Further, RRC signaling may be called an RRC message, and may be, for example, an RRC Connection Setup message, an RRC Connection Reconfiguration message, or the like.
　本開示において説明した各態様／実施形態は、ＬＴＥ（Long　Term　Evolution）、ＬＴＥ－Ａ（LTE-Advanced）、ＳＵＰＥＲ　３Ｇ、ＩＭＴ－Ａｄｖａｎｃｅｄ、４Ｇ（4th　generation　mobile　communication　system）、５Ｇ（5th　generation　mobile　communication　system）、6th　generation　mobile　communication　system（６Ｇ）、xth　generation　mobile　communication　system（ｘＧ）（ｘＧ（ｘは、例えば整数、小数））、ＦＲＡ（Future　Radio　Access）、ＮＲ（new　Radio）、New　radio　access（ＮＸ）、Future　generation　radio　access（ＦＸ）、Ｗ－ＣＤＭＡ（登録商標）、ＧＳＭ（登録商標）、ＣＤＭＡ２０００、ＵＭＢ（Ultra　Mobile　Broadband）、ＩＥＥＥ　８０２．１１（Ｗｉ－Ｆｉ（登録商標））、ＩＥＥＥ　８０２．１６（ＷｉＭＡＸ（登録商標））、ＩＥＥＥ　８０２．２０、ＵＷＢ（Ultra-WideBand）、Ｂｌｕｅｔｏｏｔｈ（登録商標）、その他の適切なシステムを利用するシステム及びこれらに基づいて拡張、修正、作成、規定された次世代システムの少なくとも一つに適用されてもよい。また、複数のシステムが組み合わされて（例えば、ＬＴＥ及びＬＴＥ－Ａの少なくとも一方と５Ｇとの組み合わせ等）適用されてもよい。 Each aspect/embodiment described in this disclosure is LTE (Long Term Evolution), LTE-A (LTE-Advanced), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), 5G (5th generation mobile communication system). system), 6th generation mobile communication system (6G), xth generation mobile communication system (xG) (xG (x is an integer or decimal number, for example)), FRA (Future Radio Access), NR (new Radio), New radio access ( NX), Future generation radio access (FX), W-CDMA (registered trademark), GSM (registered trademark), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802 Systems that utilize .16 (WiMAX (registered trademark)), IEEE 802.20, UWB (Ultra-WideBand), Bluetooth (registered trademark), and other appropriate systems, and that are extended, modified, created, and defined based on these. The present invention may be applied to at least one of the next generation systems. Furthermore, a combination of a plurality of systems may be applied (for example, a combination of at least one of LTE and LTE-A and 5G).
　本明細書で説明した各態様／実施形態の処理手順、シーケンス、フローチャート等は、矛盾の無い限り、順序を入れ替えてもよい。例えば、本開示において説明した方法については、例示的な順序を用いて様々なステップの要素を提示しており、提示した特定の順序に限定されない。 The order of the processing procedures, sequences, flowcharts, etc. of each aspect/embodiment described in this specification may be changed as long as there is no contradiction. For example, the methods described in this disclosure use an example order to present elements of the various steps and are not limited to the particular order presented.
　本明細書において基地局１０によって行われるとした特定動作は、場合によってはその上位ノード（upper node）によって行われることもある。基地局１０を有する１つ又は複数のネットワークノード（network nodes）からなるネットワークにおいて、端末２０との通信のために行われる様々な動作は、基地局１０及び基地局１０以外の他のネットワークノード（例えば、ＭＭＥ又はＳ－ＧＷ等が考えられるが、これらに限られない）の少なくとも１つによって行われ得ることは明らかである。上記において基地局１０以外の他のネットワークノードが１つである場合を例示したが、他のネットワークノードは、複数の他のネットワークノードの組み合わせ（例えば、ＭＭＥ及びＳ－ＧＷ）であってもよい。 In this specification, specific operations performed by the base station 10 may be performed by its upper node in some cases. In a network consisting of one or more network nodes including a base station 10, various operations performed for communication with a terminal 20 are performed by the base station 10 and other network nodes other than the base station 10. It is clear that this can be done by at least one of the following: for example, MME or S-GW (possible, but not limited to). Although the case where there is one network node other than the base station 10 is illustrated above, the other network node may be a combination of multiple other network nodes (for example, MME and S-GW). .
　本開示において説明した情報又は信号等は、上位レイヤ（又は下位レイヤ）から下位レイヤ（又は上位レイヤ）へ出力され得る。複数のネットワークノードを介して入出力されてもよい。 The information, signals, etc. described in this disclosure can be output from an upper layer (or lower layer) to a lower layer (or upper layer). It may be input/output via multiple network nodes.
　入出力された情報等は特定の場所（例えば、メモリ）に保存されてもよいし、管理テーブルを用いて管理してもよい。入出力される情報等は、上書き、更新、又は追記され得る。出力された情報等は削除されてもよい。入力された情報等は他の装置へ送信されてもよい。 The input/output information may be stored in a specific location (for example, memory) or may be managed using a management table. Information etc. to be input/output may be overwritten, updated, or additionally written. The output information etc. may be deleted. The input information etc. may be transmitted to other devices.
　本開示における判定は、１ビットで表される値（０か１か）によって行われてもよいし、真偽値（Boolean：true又はfalse）によって行われてもよいし、数値の比較（例えば、所定の値との比較）によって行われてもよい。 The determination in the present disclosure may be performed based on a value represented by 1 bit (0 or 1), a truth value (Boolean: true or false), or a comparison of numerical values (e.g. , comparison with a predetermined value).
　ソフトウェアは、ソフトウェア、ファームウェア、ミドルウェア、マイクロコード、ハードウェア記述言語と呼ばれるか、他の名称で呼ばれるかを問わず、命令、命令セット、コード、コードセグメント、プログラムコード、プログラム、サブプログラム、ソフトウェアモジュール、アプリケーション、ソフトウェアアプリケーション、ソフトウェアパッケージ、ルーチン、サブルーチン、オブジェクト、実行可能ファイル、実行スレッド、手順、機能などを意味するよう広く解釈されるべきである。 Software includes instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, whether referred to as software, firmware, middleware, microcode, hardware description language, or by any other name. , should be broadly construed to mean an application, software application, software package, routine, subroutine, object, executable, thread of execution, procedure, function, etc.
　また、ソフトウェア、命令、情報などは、伝送媒体を介して送受信されてもよい。例えば、ソフトウェアが、有線技術（同軸ケーブル、光ファイバケーブル、ツイストペア、デジタル加入者回線（ＤＳＬ：Digital　Subscriber　Line）など）及び無線技術（赤外線、マイクロ波など）の少なくとも一方を使用してウェブサイト、サーバ、又は他のリモートソースから送信される場合、これらの有線技術及び無線技術の少なくとも一方は、伝送媒体の定義内に含まれる。 Additionally, software, instructions, information, etc. may be sent and received via a transmission medium. For example, if the software uses wired technology (coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), etc.) and/or wireless technology (infrared, microwave, etc.) to create a website, When transmitted from a server or other remote source, these wired and/or wireless technologies are included within the definition of transmission medium.
　本開示において説明した情報、信号などは、様々な異なる技術のいずれかを使用して表されてもよい。例えば、上記の説明全体に渡って言及され得るデータ、命令、コマンド、情報、信号、ビット、シンボル、チップなどは、電圧、電流、電磁波、磁界若しくは磁性粒子、光場若しくは光子、又はこれらの任意の組み合わせによって表されてもよい。 The information, signals, etc. described in this disclosure may be represented using any of a variety of different technologies. For example, data, instructions, commands, information, signals, bits, symbols, chips, etc., which may be referred to throughout the above description, may refer to voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any of these. It may also be represented by a combination of
　なお、本開示において説明した用語及び本開示の理解に必要な用語については、同一の又は類似する意味を有する用語と置き換えてもよい。例えば、チャネル及びシンボルの少なくとも一方は信号（シグナリング）であってもよい。また、信号はメッセージであってもよい。また、コンポーネントキャリア（ＣＣ：Component　Carrier）は、キャリア周波数、セル、周波数キャリアなどと呼ばれてもよい。 Note that terms explained in this disclosure and terms necessary for understanding this disclosure may be replaced with terms having the same or similar meanings. For example, at least one of the channel and the symbol may be a signal. Also, the signal may be a message. Further, a component carrier (CC) may also be called a carrier frequency, a cell, a frequency carrier, or the like.
　本開示において使用する「システム」及び「ネットワーク」という用語は、互換的に使用される。 As used in this disclosure, the terms "system" and "network" are used interchangeably.
　また、本開示において説明した情報、パラメータなどは、絶対値を用いて表されてもよいし、所定の値からの相対値を用いて表されてもよいし、対応する別の情報を用いて表されてもよい。例えば、無線リソースはインデックスによって指示されるものであってもよい。 In addition, the information, parameters, etc. described in this disclosure may be expressed using absolute values, relative values from a predetermined value, or using other corresponding information. may be expressed. For example, radio resources may be indicated by an index.
　上述したパラメータに使用する名称はいかなる点においても限定的な名称ではない。さらに、これらのパラメータを使用する数式等は、本開示で明示的に開示したものと異なる場合もある。様々なチャネル（例えば、ＰＵＣＣＨ、ＰＤＣＣＨなど）及び情報要素は、あらゆる好適な名称によって識別できるので、これらの様々なチャネル及び情報要素に割り当てている様々な名称は、いかなる点においても限定的な名称ではない。 The names used for the parameters mentioned above are not restrictive in any respect. Furthermore, the mathematical formulas etc. using these parameters may differ from those explicitly disclosed in this disclosure. Since the various channels (e.g. PUCCH, PDCCH, etc.) and information elements may be identified by any suitable designation, the various names assigned to these various channels and information elements are in no way exclusive designations. isn't it.
　本開示においては、「基地局（ＢＳ：Base　Station）」、「無線基地局」、「基地局」、「固定局（fixed　station）」、「ＮｏｄｅＢ」、「ｅＮｏｄｅＢ（ｅＮＢ）」、「ｇＮｏｄｅＢ（ｇＮＢ）」、「アクセスポイント（access　point）」、「送信ポイント（transmission　point）」、「受信ポイント（reception　point）」、「送受信ポイント（transmission/reception　point）」、「セル」、「セクタ」、「セルグループ」、「キャリア」、「コンポーネントキャリア」などの用語は、互換的に使用され得る。基地局は、マクロセル、スモールセル、フェムトセル、ピコセルなどの用語で呼ばれる場合もある。 In this disclosure, "Base Station (BS)," "wireless base station," "base station," "fixed station," "NodeB," "eNodeB (eNB)," and "gNodeB ( gNB)”, “access point”, “transmission point”, “reception point”, “transmission/reception point”, “cell”, “sector”, Terms such as "cell group," "carrier," "component carrier," and the like may be used interchangeably. A base station is sometimes referred to by terms such as macrocell, small cell, femtocell, and picocell.
　基地局は、１つ又は複数（例えば、３つ）のセルを収容することができる。基地局が複数のセルを収容する場合、基地局のカバレッジエリア全体は複数のより小さいエリアに区分でき、各々のより小さいエリアは、基地局サブシステム（例えば、屋内用の小型基地局（ＲＲＨ：Ｒｅｍｏｔｅ　Ｒａｄｉｏ　Ｈｅａｄ））によって通信サービスを提供することもできる。「セル」又は「セクタ」という用語は、このカバレッジにおいて通信サービスを行う基地局及び基地局サブシステムの少なくとも一方のカバレッジエリアの一部又は全体を指す。 A base station can accommodate one or more (eg, three) cells. If a base station accommodates multiple cells, the overall coverage area of the base station can be partitioned into multiple smaller areas, and each smaller area is divided into multiple subsystems (e.g., small indoor base stations (RRHs)). Communication services can also be provided by Remote Radio Head). The term "cell" or "sector" refers to part or all of the coverage area of a base station and/or base station subsystem that provides communication services in this coverage.
　本開示においては、「移動局（ＭＳ：Mobile　Station）」、「ユーザ端末（user　terminal）」、「ユーザ装置（ＵＥ：User　Equipment）」、「端末」などの用語は、互換的に使用され得る。 In this disclosure, terms such as "Mobile Station (MS)," "user terminal," "User Equipment (UE)," and "terminal" may be used interchangeably. .
　移動局は、当業者によって、加入者局、モバイルユニット、加入者ユニット、ワイヤレスユニット、リモートユニット、モバイルデバイス、ワイヤレスデバイス、ワイヤレス通信デバイス、リモートデバイス、モバイル加入者局、アクセス端末、モバイル端末、ワイヤレス端末、リモート端末、ハンドセット、ユーザエージェント、モバイルクライアント、クライアント、又はいくつかの他の適切な用語で呼ばれる場合もある。 A mobile station is defined by a person skilled in the art as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless It may also be referred to as a terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable terminology.
　基地局及び移動局の少なくとも一方は、送信装置、受信装置、通信装置などと呼ばれてもよい。なお、基地局及び移動局の少なくとも一方は、移動体に搭載されたデバイス、移動体自体などであってもよい。当該移動体は、乗り物（例えば、車、飛行機など）であってもよいし、無人で動く移動体（例えば、ドローン、自動運転車など）であってもよいし、ロボット（有人型又は無人型）であってもよい。なお、基地局及び移動局の少なくとも一方は、必ずしも通信動作時に移動しない装置も含む。例えば、基地局及び移動局の少なくとも一方は、センサなどのＩｏＴ（Internet　of　Things）機器であってもよい。 At least one of a base station and a mobile station may be called a transmitting device, a receiving device, a communication device, etc. Note that at least one of the base station and the mobile station may be a device mounted on a mobile body, the mobile body itself, or the like. The moving object may be a vehicle (for example, a car, an airplane, etc.), an unmanned moving object (for example, a drone, a self-driving car, etc.), or a robot (manned or unmanned). ). Note that at least one of the base station and the mobile station includes devices that do not necessarily move during communication operations. For example, at least one of the base station and the mobile station may be an IoT (Internet of Things) device such as a sensor.
　また、本開示における基地局は、ユーザ端末で読み替えてもよい。例えば、基地局及びユーザ端末間の通信を、複数の端末２０間の通信（例えば、Ｄ２Ｄ（Device-to-Device）、Ｖ２Ｘ（Vehicle-to-Everything）などと呼ばれてもよい）に置き換えた構成について、本開示の各態様／実施形態を適用してもよい。この場合、上述の基地局１０が有する機能を端末２０が有する構成としてもよい。また、「上り」及び「下り」などの文言は、端末間通信に対応する文言（例えば、「サイド（side）」）で読み替えられてもよい。例えば、上りチャネル、下りチャネルなどは、サイドチャネルで読み替えられてもよい。 Additionally, the base station in the present disclosure may be replaced by a user terminal. For example, communication between a base station and a user terminal is replaced with communication between a plurality of terminals 20 (for example, it may be called D2D (Device-to-Device), V2X (Vehicle-to-Everything), etc.). Regarding the configuration, each aspect/embodiment of the present disclosure may be applied. In this case, the terminal 20 may have the functions that the base station 10 described above has. Further, words such as "up" and "down" may be replaced with words corresponding to inter-terminal communication (for example, "side"). For example, uplink channels, downlink channels, etc. may be replaced with side channels.
　同様に、本開示におけるユーザ端末は、基地局で読み替えてもよい。この場合、上述のユーザ端末が有する機能を基地局が有する構成としてもよい。 Similarly, the user terminal in the present disclosure may be replaced with a base station. In this case, the base station may have the functions that the user terminal described above has.
　本開示で使用する「判断(determining)」、「決定(determining)」という用語は、多種多様な動作を包含する場合がある。「判断」、「決定」は、例えば、判定(judging)、計算(calculating)、算出(computing)、処理(processing)、導出(deriving)、調査(investigating)、探索(looking　up、search、inquiry)（例えば、テーブル、データベース又は別のデータ構造での探索）、確認(ascertaining)した事を「判断」「決定」したとみなす事などを含み得る。また、「判断」、「決定」は、受信(receiving)（例えば、情報を受信すること）、送信(transmitting)(例えば、情報を送信すること)、入力(input)、出力(output)、アクセス(accessing)（例えば、メモリ中のデータにアクセスすること）した事を「判断」「決定」したとみなす事などを含み得る。また、「判断」、「決定」は、解決(resolving)、選択(selecting)、選定(choosing)、確立(establishing)、比較(comparing)などした事を「判断」「決定」したとみなす事を含み得る。つまり、「判断」「決定」は、何らかの動作を「判断」「決定」したとみなす事を含み得る。また、「判断（決定）」は、「想定する（assuming）」、「期待する（expecting）」、「みなす（considering）」などで読み替えられてもよい。 As used in this disclosure, the terms "determining" and "determining" may encompass a wide variety of operations. "Judgment" and "decision" include, for example, judging, calculating, computing, processing, deriving, investigating, looking up, search, and inquiry. (e.g., searching in a table, database, or other data structure), and regarding an ascertaining as a "judgment" or "decision." In addition, "judgment" and "decision" refer to receiving (e.g., receiving information), transmitting (e.g., sending information), input, output, and access. (accessing) (e.g., accessing data in memory) may include considering something as a "judgment" or "decision." In addition, "judgment" and "decision" refer to resolving, selecting, choosing, establishing, comparing, etc. as "judgment" and "decision". may be included. In other words, "judgment" and "decision" may include regarding some action as having been "judged" or "determined." Further, "judgment (decision)" may be read as "assuming", "expecting", "considering", etc.
　「接続された(connected)」、「結合された(coupled)」という用語、又はこれらのあらゆる変形は、２又はそれ以上の要素間の直接的又は間接的なあらゆる接続又は結合を意味し、互いに「接続」又は「結合」された２つの要素間に１又はそれ以上の中間要素が存在することを含むことができる。要素間の結合又は接続は、物理的なものであっても、論理的なものであっても、或いはこれらの組み合わせであってもよい。例えば、「接続」は「アクセス」で読み替えられてもよい。本開示で使用する場合、２つの要素は、１又はそれ以上の電線、ケーブル及びプリント電気接続の少なくとも一つを用いて、並びにいくつかの非限定的かつ非包括的な例として、無線周波数領域、マイクロ波領域及び光（可視及び不可視の両方）領域の波長を有する電磁エネルギーなどを用いて、互いに「接続」又は「結合」されると考えることができる。 The terms "connected", "coupled", or any variations thereof, refer to any connection or coupling, direct or indirect, between two or more elements and to each other. It may include the presence of one or more intermediate elements between two elements that are "connected" or "coupled." The bonds or connections between elements may be physical, logical, or a combination thereof. For example, "connection" may be replaced with "access." As used in this disclosure, two elements may include one or more electrical wires, cables, and/or printed electrical connections, as well as in the radio frequency domain, as some non-limiting and non-inclusive examples. , electromagnetic energy having wavelengths in the microwave and optical (both visible and non-visible) ranges.
　参照信号は、ＲＳ（Reference　Signal）と略称することもでき、適用される標準によってパイロット（Pilot）と呼ばれてもよい。 The reference signal can also be abbreviated as RS (Reference Signal), and may be called a pilot depending on the applied standard.
　本開示において使用する「に基づいて」という記載は、別段に明記されていない限り、「のみに基づいて」を意味しない。言い換えれば、「に基づいて」という記載は、「のみに基づいて」と「に少なくとも基づいて」の両方を意味する。 As used in this disclosure, the phrase "based on" does not mean "based solely on" unless explicitly stated otherwise. In other words, the phrase "based on" means both "based only on" and "based at least on."
　本開示において使用する「第１の」、「第２の」などの呼称を使用した要素へのいかなる参照も、それらの要素の量又は順序を全般的に限定しない。これらの呼称は、２つ以上の要素間を区別する便利な方法として本開示において使用され得る。したがって、第１及び第２の要素への参照は、２つの要素のみが採用され得ること、又は何らかの形で第１の要素が第２の要素に先行しなければならないことを意味しない。 As used in this disclosure, any reference to elements using the designations "first," "second," etc. does not generally limit the amount or order of those elements. These designations may be used in this disclosure as a convenient way to distinguish between two or more elements. Thus, reference to a first and second element does not imply that only two elements may be employed or that the first element must precede the second element in any way.
　上記の各装置の構成における「手段」を、「部」、「回路」、「デバイス」等に置き換えてもよい。 "Means" in the configurations of each of the above devices may be replaced with "unit", "circuit", "device", etc.
　本開示において、「含む（include）」、「含んでいる（including）」及びそれらの変形が使用されている場合、これらの用語は、用語「備える（comprising）」と同様に、包括的であることが意図される。さらに、本開示において使用されている用語「又は（or）」は、排他的論理和ではないことが意図される。 Where "include", "including" and variations thereof are used in this disclosure, these terms, like the term "comprising," are inclusive. It is intended that Furthermore, the term "or" as used in this disclosure is not intended to be exclusive or.
　無線フレームは時間領域において１つ又は複数のフレームによって構成されてもよい。時間領域において１つ又は複数の各フレームはサブフレームと呼ばれてもよい。サブフレームは更に時間領域において１つ又は複数のスロットによって構成されてもよい。サブフレームは、ニューメロロジ（numerology）に依存しない固定の時間長（例えば、１ｍｓ）であってもよい。 A radio frame may be composed of one or more frames in the time domain. Each frame or frames in the time domain may be called a subframe. A subframe may also be composed of one or more slots in the time domain. A subframe may have a fixed time length (eg, 1 ms) that does not depend on numerology.
　ニューメロロジは、ある信号又はチャネルの送信及び受信の少なくとも一方に適用される通信パラメータであってもよい。ニューメロロジは、例えば、サブキャリア間隔（ＳＣＳ：SubCarrier　Spacing）、帯域幅、シンボル長、サイクリックプレフィックス長、送信時間間隔（ＴＴＩ：Transmission　Time　Interval）、ＴＴＩあたりのシンボル数、無線フレーム構成、送受信機が周波数領域において行う特定のフィルタリング処理、送受信機が時間領域において行う特定のウィンドウイング処理などの少なくとも１つを示してもよい。 The numerology may be a communication parameter applied to the transmission and/or reception of a certain signal or channel. Numerology includes, for example, subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame configuration, and transmitter/receiver. It may also indicate at least one of a specific filtering process performed in the frequency domain, a specific windowing process performed by the transceiver in the time domain, and the like.
　スロットは、時間領域において１つ又は複数のシンボル（ＯＦＤＭ（Orthogonal　Frequency　Division　Multiplexing）シンボル、ＳＣ-ＦＤＭＡ（Single　Carrier　Frequency　Division　Multiple　Access）シンボル等）で構成されてもよい。スロットは、ニューメロロジに基づく時間単位であってもよい。 A slot may be composed of one or more symbols (OFDM (Orthogonal Frequency Division Multiplexing) symbols, SC-FDMA (Single Carrier Frequency Division Multiple Access) symbols, etc.) in the time domain. A slot may be a unit of time based on numerology.
　スロットは、複数のミニスロットを含んでもよい。各ミニスロットは、時間領域において１つ又は複数のシンボルによって構成されてもよい。また、ミニスロットは、サブスロットと呼ばれてもよい。ミニスロットは、スロットよりも少ない数のシンボルによって構成されてもよい。ミニスロットより大きい時間単位で送信されるＰＤＳＣＨ（又はＰＵＳＣＨ）は、ＰＤＳＣＨ（又はＰＵＳＣＨ）マッピングタイプＡと呼ばれてもよい。ミニスロットを用いて送信されるＰＤＳＣＨ（又はＰＵＳＣＨ）は、ＰＤＳＣＨ（又はＰＵＳＣＨ）マッピングタイプＢと呼ばれてもよい。 A slot may include multiple mini-slots. Each minislot may be made up of one or more symbols in the time domain. Furthermore, a mini-slot may also be called a sub-slot. A minislot may be made up of fewer symbols than a slot. PDSCH (or PUSCH) transmitted in time units larger than minislots may be referred to as PDSCH (or PUSCH) mapping type A. PDSCH (or PUSCH) transmitted using minislots may be referred to as PDSCH (or PUSCH) mapping type B.
　無線フレーム、サブフレーム、スロット、ミニスロット及びシンボルは、いずれも信号を伝送する際の時間単位を表す。無線フレーム、サブフレーム、スロット、ミニスロット及びシンボルは、それぞれに対応する別の呼称が用いられてもよい。 Radio frames, subframes, slots, minislots, and symbols all represent time units when transmitting signals. Other names may be used for the radio frame, subframe, slot, minislot, and symbol.
　例えば、１サブフレームは送信時間間隔（ＴＴＩ：Transmission　Time　Interval）と呼ばれてもよいし、複数の連続したサブフレームがＴＴＩと呼ばれてよいし、１スロット又は１ミニスロットがＴＴＩと呼ばれてもよい。つまり、サブフレーム及びＴＴＩの少なくとも一方は、既存のＬＴＥにおけるサブフレーム（１ｍｓ）であってもよいし、１ｍｓより短い期間（例えば、１－１３シンボル）であってもよいし、１ｍｓより長い期間であってもよい。なお、ＴＴＩを表す単位は、サブフレームではなくスロット、ミニスロットなどと呼ばれてもよい。 For example, one subframe may be called a transmission time interval (TTI), multiple consecutive subframes may be called a TTI, and one slot or one minislot may be called a TTI. It's okay. In other words, at least one of the subframe and TTI may be a subframe (1ms) in existing LTE, a period shorter than 1ms (for example, 1-13 symbols), or a period longer than 1ms. It may be. Note that the unit representing the TTI may be called a slot, minislot, etc. instead of a subframe.
　ここで、ＴＴＩは、例えば、無線通信におけるスケジューリングの最小時間単位のことをいう。例えば、ＬＴＥシステムでは、基地局が各端末２０に対して、無線リソース（各端末２０において使用することが可能な周波数帯域幅、送信電力など）を、ＴＴＩ単位で割り当てるスケジューリングを行う。なお、ＴＴＩの定義はこれに限られない。 Here, TTI refers to, for example, the minimum time unit for scheduling in wireless communication. For example, in the LTE system, a base station performs scheduling to allocate radio resources (frequency bandwidth, transmission power, etc. that can be used by each terminal 20) to each terminal 20 on a TTI basis. Note that the definition of TTI is not limited to this.
　ＴＴＩは、チャネル符号化されたデータパケット（トランスポートブロック）、コードブロック、コードワードなどの送信時間単位であってもよいし、スケジューリング、リンクアダプテーションなどの処理単位となってもよい。なお、ＴＴＩが与えられたとき、実際にトランスポートブロック、コードブロック、コードワードなどがマッピングされる時間区間（例えば、シンボル数）は、当該ＴＴＩよりも短くてもよい。 The TTI may be a transmission time unit of a channel-coded data packet (transport block), a code block, a codeword, etc., or may be a processing unit of scheduling, link adaptation, etc. Note that when a TTI is given, the time interval (for example, the number of symbols) to which transport blocks, code blocks, code words, etc. are actually mapped may be shorter than the TTI.
　なお、１スロット又は１ミニスロットがＴＴＩと呼ばれる場合、１以上のＴＴＩ（すなわち、１以上のスロット又は１以上のミニスロット）が、スケジューリングの最小時間単位となってもよい。また、当該スケジューリングの最小時間単位を構成するスロット数（ミニスロット数）は制御されてもよい。 Note that when one slot or one minislot is called a TTI, one or more TTIs (that is, one or more slots or one or more minislots) may be the minimum time unit for scheduling. Further, the number of slots (minislot number) that constitutes the minimum time unit of the scheduling may be controlled.
　１ｍｓの時間長を有するＴＴＩは、通常ＴＴＩ（ＬＴＥ　Ｒｅｌ．８－１２におけるＴＴＩ）、ノーマルＴＴＩ、ロングＴＴＩ、通常サブフレーム、ノーマルサブフレーム、ロングサブフレーム、スロットなどと呼ばれてもよい。通常ＴＴＩより短いＴＴＩは、短縮ＴＴＩ、ショートＴＴＩ、部分ＴＴＩ（partial又はfractional　TTI）、短縮サブフレーム、ショートサブフレーム、ミニスロット、サブスロット、スロットなどと呼ばれてもよい。 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. A TTI that is shorter than the normal TTI may be referred to as an abbreviated TTI, short TTI, partial or fractional TTI, shortened subframe, short subframe, minislot, subslot, slot, etc.
　なお、ロングＴＴＩ（例えば、通常ＴＴＩ、サブフレームなど）は、１ｍｓを超える時間長を有するＴＴＩで読み替えてもよいし、ショートＴＴＩ（例えば、短縮ＴＴＩなど）は、ロングＴＴＩのＴＴＩ長未満かつ１ｍｓ以上のＴＴＩ長を有するＴＴＩで読み替えてもよい。 Note that long TTI (for example, normal TTI, subframe, etc.) may be read as TTI with a time length exceeding 1 ms, and short TTI (for example, short TTI, etc.) It may also be read as a TTI having the above TTI length.
　リソースブロック（ＲＢ）は、時間領域及び周波数領域のリソース割当単位であり、周波数領域において、１つ又は複数個の連続した副搬送波（subcarrier）を含んでもよい。ＲＢに含まれるサブキャリアの数は、ニューメロロジに関わらず同じであってもよく、例えば１２であってもよい。ＲＢに含まれるサブキャリアの数は、ニューメロロジに基づいて決定されてもよい。 A resource block (RB) is a resource allocation unit in the time domain and frequency domain, and may include one or more continuous subcarriers in the frequency domain. The number of subcarriers included in an RB may be the same regardless of the numerology, and may be 12, for example. The number of subcarriers included in an RB may be determined based on newerology.
　また、ＲＢの時間領域は、１つ又は複数個のシンボルを含んでもよく、１スロット、１ミニスロット、１サブフレーム、又は１ＴＴＩの長さであってもよい。１ＴＴＩ、１サブフレームなどは、それぞれ１つ又は複数のリソースブロックで構成されてもよい。 Additionally, 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.
　なお、１つ又は複数のＲＢは、物理リソースブロック（ＰＲＢ：Physical　RB）、サブキャリアグループ（ＳＣＧ：Sub-Carrier　Group）、リソースエレメントグループ（ＲＥＧ：Resource　Element　Group）、ＰＲＢペア、ＲＢペアなどと呼ばれてもよい。 Note that one or more RBs include physical resource blocks (PRBs), sub-carrier groups (SCGs), resource element groups (REGs), PRB pairs, RB pairs, etc. May be called.
　また、リソースブロックは、１つ又は複数のリソースエレメント（ＲＥ：Resource　Element）によって構成されてもよい。例えば、１ＲＥは、１サブキャリア及び１シンボルの無線リソース領域であってもよい。 Additionally, a resource block may be configured by one or more resource elements (REs). For example, 1 RE may be a radio resource region of 1 subcarrier and 1 symbol.
　帯域幅部分（ＢＷＰ：Bandwidth　Part）（部分帯域幅などと呼ばれてもよい）は、あるキャリアにおいて、あるニューメロロジ用の連続する共通ＲＢ（common　resource　blocks）のサブセットのことを表してもよい。ここで、共通ＲＢは、当該キャリアの共通参照ポイントを基準としたＲＢのインデックスによって特定されてもよい。ＰＲＢは、あるＢＷＰで定義され、当該ＢＷＰ内で番号付けされてもよい。 A bandwidth part (BWP) (which may also be called a partial bandwidth or the like) may represent a subset of consecutive common resource blocks (RBs) for a certain numerology in a certain carrier. Here, the common RB may be specified by an RB index based on a common reference point of the carrier. PRBs may be defined in a BWP and numbered within that BWP.
　ＢＷＰには、ＵＬ用のＢＷＰ（ＵＬ　ＢＷＰ）と、ＤＬ用のＢＷＰ（ＤＬ　ＢＷＰ）とが含まれてもよい。端末２０に対して、１キャリア内に１つ又は複数のＢＷＰが設定されてもよい。 The BWP may include a UL BWP (UL BWP) and a DL BWP (DL BWP). One or more BWPs may be configured for the terminal 20 within one carrier.
　設定されたＢＷＰの少なくとも１つがアクティブであってもよく、端末２０は、アクティブなＢＷＰの外で所定の信号／チャネルを送受信することを想定しなくてもよい。なお、本開示における「セル」、「キャリア」などは、「ＢＷＰ」で読み替えられてもよい。 At least one of the configured BWPs may be active, and the terminal 20 does not need to assume that it transmits or receives a given signal/channel outside the active BWP. Note that "cell", "carrier", etc. in the present disclosure may be replaced with "BWP".
　上述した無線フレーム、サブフレーム、スロット、ミニスロット及びシンボルなどの構造は例示に過ぎない。例えば、無線フレームに含まれるサブフレームの数、サブフレーム又は無線フレームあたりのスロットの数、スロット内に含まれるミニスロットの数、スロット又はミニスロットに含まれるシンボル及びＲＢの数、ＲＢに含まれるサブキャリアの数、並びにＴＴＩ内のシンボル数、シンボル長、サイクリックプレフィックス（ＣＰ：Cyclic　Prefix）長などの構成は、様々に変更することができる。 The structures of radio frames, subframes, slots, minislots, symbols, etc. described above are merely examples. For 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 a slot, the number of symbols and RBs included in a slot or minislot, the number of symbols included in an RB, Configurations such as the number of subcarriers, the number of symbols in a TTI, the symbol length, and the cyclic prefix (CP) length can be changed in various ways.
　本開示において、例えば、英語でのa,　an及びtheのように、翻訳により冠詞が追加された場合、本開示は、これらの冠詞の後に続く名詞が複数形であることを含んでもよい。 In this disclosure, when articles are added by translation, such as a, an, and the in English, the present disclosure may include that the nouns following these articles are plural.
　本開示において、「ＡとＢが異なる」という用語は、「ＡとＢが互いに異なる」ことを意味してもよい。なお、当該用語は、「ＡとＢがそれぞれＣと異なる」ことを意味してもよい。「離れる」、「結合される」などの用語も、「異なる」と同様に解釈されてもよい。 In the present disclosure, the term "A and B are different" may mean "A and B are different from each other." Note that the term may also mean that "A and B are each different from C". Terms such as "separate" and "coupled" may also be interpreted similarly to "different."
　本開示において説明した各態様／実施形態は単独で用いられてもよいし、組み合わせて用いられてもよいし、実行に伴って切り替えて用いられてもよい。また、所定の情報の通知（例えば、「Ｘであること」の通知）は、明示的に行うものに限られず、暗黙的（例えば、当該所定の情報の通知を行わない）ことによって行われてもよい。 Each aspect/embodiment described in this disclosure may be used alone, in combination, or may be switched and used in accordance with execution. In addition, notification of prescribed information (for example, notification of "X") is not limited to being done explicitly, but may also be done implicitly (for example, not notifying the prescribed information). Good too.
　以上、本開示について詳細に説明したが、当業者にとっては、本開示が本開示中に説明した実施形態に限定されるものではないということは明らかである。本開示は、請求の範囲の記載により定まる本開示の趣旨及び範囲を逸脱することなく修正及び変更態様として実施することができる。したがって、本開示の記載は、例示説明を目的とするものであり、本開示に対して何ら制限的な意味を有するものではない。 Although the present disclosure has been described in detail above, it is clear for those skilled in the art that the present disclosure is not limited to the embodiments described in the present disclosure. The present disclosure can be implemented as modifications and variations without departing from the spirit and scope of the present disclosure as determined by the claims. Therefore, the description of the present disclosure is for the purpose of illustrative explanation and is not intended to have any limiting meaning on the present disclosure.
１０　　　　基地局（ＲＡＮ）
１１０　　　送信部
１２０　　　受信部
１３０　　　設定部
１４０　　　制御部
２０　　　　端末
２１０　　　送信部
２２０　　　受信部
２３０　　　設定部
２４０　　　制御部
３１０　　　ＡＭＦ
３２０　　　ＮＳＳＦ
１００１　　プロセッサ
１００２　　記憶装置
１００３　　補助記憶装置
１００４　　通信装置
１００５　　入力装置
１００６　　出力装置
２００１　　車両
２００２　　駆動部
２００３　　操舵部
２００４　　アクセルペダル
２００５　　ブレーキペダル
２００６　　シフトレバー
２００７　　前輪
２００８　　後輪
２００９　　車軸
２０１０　　電子制御部
２０１２　　情報サービス部
２０１３　　通信モジュール
２０２１　　電流センサ
２０２２　　回転数センサ
２０２３　　空気圧センサ
２０２４　　車速センサ
２０２５　　加速度センサ
２０２６　　ブレーキペダルセンサ
２０２７　　シフトレバーセンサ
２０２８　　物体検出センサ
２０２９　　アクセルペダルセンサ
２０３０　　運転支援システム部
２０３１　　マイクロプロセッサ
２０３２　　メモリ（ＲＯＭ，ＲＡＭ）
２０３３　　通信ポート（ＩＯポート） 10 Base station (RAN)
110 Transmitting section 120 Receiving section 130 Setting section 140 Control section 20 Terminal 210 Transmitting section 220 Receiving section 230 Setting section 240 Control section 310 AMF
320 NSSF
1001 Processor 1002 Storage device 1003 Auxiliary storage device 1004 Communication device 1005 Input device 1006 Output device 2001 Vehicle 2002 Drive section 2003 Steering section 2004 Accelerator pedal 2005 Brake pedal 2006 Shift lever 2007 Front wheel 2008 Rear wheel 2009 Axle 2010 Electronic control section 2012 Information service Department 2013 Communication module 2021 Current sensor 2022 Rotational speed sensor 2023 Air pressure sensor 2024 Vehicle speed sensor 2025 Acceleration sensor 2026 Brake pedal sensor 2027 Shift lever sensor 2028 Object detection sensor 2029 Accelerator pedal sensor 2030 Driving support system unit 2031 Microprocessor 2032 Memory (ROM, RAM)
2033 Communication port (IO port)

Claims (4)

  1. 　トラッキングエリアごとに、ネットワークスライスの識別子と、前記ネットワークスライスを前記トラッキングエリアに関するシステム情報において識別するための識別子とを対応させる対応情報を、他のネットワークノードから受信する受信部と、
    　端末からの登録要求に応じて、前記対応情報を含む登録許諾の応答を前記端末に送信する送信部と、を備え、
    　トラッキングエリアごとの前記対応情報は、前記端末の在圏セルに対応するトラッキングエリアと、前記端末の在圏セルに対応するトラッキングエリアに隣接するトラッキングエリアと、で利用可能なネットワークスライスの識別子を含み、
    　前記トラッキングエリアに関する前記システム情報は、前記端末の在圏セルに対応するトラッキングエリアと、前記端末の在圏セルに対応するトラッキングエリアに隣接するトラッキングエリアと、に関する情報を含む、
    　ネットワークノード。     a receiving unit that receives, for each tracking area, correspondence information that associates an identifier of a network slice with an identifier for identifying the network slice in system information regarding the tracking area from another network node;
    a transmitter that transmits a registration permission response including the correspondence information to the terminal in response to a registration request from the terminal;
    The correspondence information for each tracking area includes identifiers of network slices that can be used in a tracking area corresponding to a cell in which the terminal is located and a tracking area adjacent to a tracking area corresponding to the cell in which the terminal is located. ,
    The system information regarding the tracking area includes information regarding a tracking area corresponding to the cell in which the terminal is located and a tracking area adjacent to the tracking area corresponding to the cell in which the terminal is located.
    network node.
  2. 　前記対応情報は、トラッキングエリアを識別するためのコードと、前記ネットワークスライスの識別子と、前記ネットワークスライスを前記システム情報において識別するための識別子とを含む、
    　請求項１に記載のネットワークノード。     The correspondence information includes a code for identifying a tracking area, an identifier for the network slice, and an identifier for identifying the network slice in the system information.
    A network node according to claim 1.
  3. 　前記システム情報は、前記ネットワークスライスを前記トラッキングエリアに関するシステム情報において識別するための識別子と、前記トラッキングエリアで前記ネットワークスライスを収容する周波数と、前記周波数の優先度とを含む、
    　請求項１に記載のネットワークノード。     The system information includes an identifier for identifying the network slice in system information regarding the tracking area, a frequency that accommodates the network slice in the tracking area, and a priority of the frequency.
    A network node according to claim 1.
  4. 　トラッキングエリアごとに、ネットワークスライスの識別子と、前記ネットワークスライスを前記トラッキングエリアに関するシステム情報において識別するための識別子とを対応させる対応情報を、他のネットワークノードから受信するステップと、
    　端末からの登録要求に応じて、前記対応情報を含む登録許諾の応答を前記端末に送信するステップと、を備え、
    　トラッキングエリアごとの前記対応情報は、前記端末の在圏セルに対応するトラッキングエリアと、前記端末の在圏セルに対応するトラッキングエリアに隣接するトラッキングエリアと、で利用可能なネットワークスライスの識別子を含み、
    　前記トラッキングエリアに関する前記システム情報は、前記端末の在圏セルに対応するトラッキングエリアと、前記端末の在圏セルに対応するトラッキングエリアに隣接するトラッキングエリアと、に関する情報を含む、
    　ネットワークノードが実行する通信方法。     receiving, for each tracking area, correspondence information from other network nodes that associates an identifier of a network slice with an identifier for identifying the network slice in system information regarding the tracking area;
    a step of transmitting a registration permission response including the correspondence information to the terminal in response to a registration request from the terminal;
    The correspondence information for each tracking area includes identifiers of network slices that can be used in a tracking area corresponding to a cell in which the terminal is located and a tracking area adjacent to a tracking area corresponding to the cell in which the terminal is located. ,
    The system information regarding the tracking area includes information regarding a tracking area corresponding to the cell in which the terminal is located and a tracking area adjacent to the tracking area corresponding to the cell in which the terminal is located.
    A communication method performed by network nodes.
PCT/JP2022/017212 2022-04-06 2022-04-06 Network node and communication method WO2023195111A1 (en)

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