WO2024057549A1 - Nœud de réseau et procédé de communication - Google Patents

Nœud de réseau et procédé de communication Download PDF

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Publication number
WO2024057549A1
WO2024057549A1 PCT/JP2022/034837 JP2022034837W WO2024057549A1 WO 2024057549 A1 WO2024057549 A1 WO 2024057549A1 JP 2022034837 W JP2022034837 W JP 2022034837W WO 2024057549 A1 WO2024057549 A1 WO 2024057549A1
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Prior art keywords
terminal
initial registration
authentication
information
network node
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PCT/JP2022/034837
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English (en)
Japanese (ja)
Inventor
淳 巳之口
政宏 澤田
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株式会社Ｎｔｔドコモ
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Priority to PCT/JP2022/034837 priority Critical patent/WO2024057549A1/fr
Publication of WO2024057549A1 publication Critical patent/WO2024057549A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/06—Authentication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/60—Context-dependent security
    • H04W12/69—Identity-dependent
    • H04W12/72—Subscriber identity
    • 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

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
  • NR Release 19 stipulates that S&F operations (Store and Forward Operations) are required for the transmission of IoT (Internet of Things) data via artificial satellites or flying objects (hereinafter referred to as satellites). It is being considered. Signaling and data exchange between the terminal and the satellite can occur even if the satellite is not simultaneously connected to the terrestrial network (i.e. the service link can remain operational even when there is no active feeder link connection). can).
  • S&F operations Store and Forward Operations
  • IoT Internet of Things
  • satellites flying objects
  • the architecture for S&F operation has not been determined.
  • a method of mounting RAN, core network, server functions, etc. on a satellite is also being proposed.
  • having basic authentication information for the network on the satellite that is, a configuration in which the ARPF (Authentication credential Repository and Processing Function) is included on the satellite, has very poor maintainability (i.e., When a terminal joins, it is necessary to send a satellite each time to safely store basic authentication information in the ARPF (or new IoT terminals cannot be introduced). Therefore, a configuration in which the ARPF is included in the terrestrial core network is assumed.
  • the registration procedure will not be completed because the terminal authentication will not be completed if the satellite and ARPF cannot communicate.
  • the terminal will request registration again. After that, the same process will be repeated between the functions on the satellite and the functions on the ground while the satellite and ARPF are able to communicate. Therefore, with the conventional specifications, there is a problem that the authentication process is not completed forever, and as a result, the registration process is not completed.
  • the present invention has been made in view of the above points, and its purpose is to complete the registration process of terminals in various types of communication via satellite.
  • a receiving unit receives a signal requesting initial registration from a terminal and an identifier of the terminal, and stores received information indicating the progress status of initial registration in association with the identifier.
  • a control unit that continues the progress of the initial registration in response to a request for the initial registration transmitted from the terminal identified by the identifier, based on information indicating the progress status identified by the identifier. be done.
  • a technology that makes it possible to complete the registration process of a terminal in various types of communications via satellite.
  • 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 diagram for explaining a transmission method for S&F operation via a satellite.
  • FIG. 2 is a sequence diagram showing an example of the flow of the first initial registration procedure in step A according to the embodiment of the present invention.
  • FIG. 3 is a sequence diagram showing an example of the flow of the first initial registration procedure in step B according to the embodiment of the present invention.
  • FIG. 6 is a sequence diagram showing an example of the flow of the second initial registration procedure in step A according to the embodiment of the present invention.
  • FIG. 6 is a sequence diagram showing an example of the flow of the second initial registration procedure in step B according to the embodiment of the present invention.
  • FIG. 7 is a sequence diagram showing an example of the flow of the third initial registration procedure in step A according to the embodiment of the present invention.
  • 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 10, a terminal 20, a core network 30, and a DN (Data Network) 40.
  • the core network 30 is a network that includes an exchange, a subscriber information management device, and the like.
  • the core network 30 includes a network node that implements a U-Plane function and a network node group that implements a C-Plane function group.
  • the U-Plane function is a function that executes user data transmission and reception processing.
  • a network node that realizes the U-Plane function is, for example, a UPF (User plane function) 380.
  • the UPF 380 is a network node that has functions such as a PDU (Protocol Data Unit) session point to the outside for interconnection with the DN 40, packet routing and forwarding, and user plane QoS (Quality of Service) handling.
  • the UPF 380 controls data transmission and reception between the DN 40 and the terminal 20.
  • UPF 380 and DN 40 may be composed of one or more network slices.
  • the C-Plane function group is a function group that executes a series of control processes for establishing communication and the like.
  • the network nodes that realize the C-Plane function group include, for example, AMF (Access and Mobility Management Function) 310, UDM (Unified Data Management) 320, NEF (Network Exposure Function) 330, and NRF (Network Repository Function).
  • AUSF Authentication Server Function
  • PCF Policy Control Function
  • SMF Session Management Function
  • AF Application Function
  • the AMF 310 is a network node that has functions such as RAN interface termination, NAS (Non-Access Stratum) termination, registration management, connection management, reachability management, and mobility management. Further, the AMF 310 includes a SEAF (SEcurity Anchor Function) 311. SEAF 311 acts as a security anchor in the serving network.
  • the NRF 340 is a network node that has a function of discovering an NF (Network Function) instance that provides a service.
  • UDM 320 is a network node that manages subscriber data and authentication data.
  • the UDM 320 includes a UDR (User Data Repository) 321 that holds the data, and a FE (Front End) 322.
  • FE 322 processes subscriber information.
  • the UDM 320 may include an ARPF (Authentication credential Repository and Processing Function).
  • ARPF is a network node with authentication credential repository and processing functionality.
  • the AUSF 350 is a network node that has a terminal authentication function.
  • the SMF 370 is a network node that has functions such as session management, IP (Internet Protocol) address assignment and management of the terminal 20, DHCP (Dynamic Host Configuration Protocol) function, ARP (Address Resolution Protocol) proxy, and roaming function.
  • the NEF 330 is a network node that has a function of notifying other NFs (Network Functions) of capabilities and events.
  • the PCF 360 is a network node that has a function of controlling network policy.
  • An AF (Application Function) 390 is a network node that has a function of controlling an application server.
  • the AMF 310 and the RAN 10 are communicably connected as an N2 link.
  • the UPF 380 and the RAN 10 are communicably connected as an N3 link.
  • the UPF 380 and the SMF 370 are communicably connected as an N4 link.
  • the UPF 380 and the DN 40 are communicably connected as an N6 link.
  • NR Release 19 considers S&F operations (Store and Forward Operations) regarding the transmission of IoT (Internet of Things) data via artificial satellites or flying objects (hereinafter referred to as satellites). ing. Signaling and data exchange between the terminal and the satellite can occur even if the satellite is not simultaneously connected to the terrestrial network (i.e. the service link can remain operational even when there is no active feeder link connection). can).
  • S&F operations Store and Forward Operations
  • IoT Internet of Things
  • satellites flying objects
  • FIG. 3 is a diagram for explaining a transmission method for S&F operation via a satellite.
  • step A if the terminal has satellite coverage available, there is no end-to-end path to reach the terrestrial network. Therefore, the exchange of signaling and data traffic only occurs in this step A between the terminal and the satellite.
  • step B a connection is established between the satellite and the terrestrial network via the feeder link.
  • the satellite can no longer reach the terminal, but can upload/download user data traffic (messages collected from or addressed to the terminal) for servicing the terminal.
  • the architecture for S&F operation has not been determined.
  • a method of mounting RAN, core network, server functions, etc. on a satellite is also being proposed.
  • having basic authentication information for the network on the satellite that is, a configuration in which ARPF is included on the satellite, has very poor maintainability (i.e., when a new IoT terminal joins, the basic In order to securely store authentication information in the ARPF, it is necessary to take down the satellite each time (or new IoT terminals cannot be introduced). Therefore, a configuration in which the ARPF is included in the terrestrial core network is assumed.
  • the registration procedure will not be completed because the terminal authentication will not be completed if the satellite and ARPF cannot communicate.
  • the terminal will request registration again. After that, the same process will be repeated between the functions on the satellite and the functions on the ground while the satellite and ARPF are able to communicate. Therefore, with the conventional specifications, there is a problem that the authentication process is not completed forever, and as a result, the registration process is not completed.
  • the AMF stores information indicating the status regarding the progress of authentication processing, and when a terminal resends a registration request, the authentication processing is performed according to the status. An example of continuing the process will be explained. Thereby, the terminal registration process can be completed.
  • the SEAF 311 may execute all or part of the processing executed by the AMF 310. Further, it is assumed that the AMF 310 is included in the satellite and the AUSF, ARPF, etc. are located on the ground.
  • FIG. 4 is a sequence diagram showing an example of the flow of the first initial registration procedure in step A according to the embodiment of the present invention.
  • FIG. 4 shows a processing procedure when the satellite covers a specific area where the terminal 20 is located (for example, area X in country A).
  • the RAN 10 transmits broadcast information to the terminal 20 (step S101).
  • the transmitted broadcast information includes information indicating that S&F operation is being performed.
  • the terminal 20 transmits a signal indicating a registration request including a SUCI (Subscription Concealed Identifier) to the AMF 310 (Step S102).
  • the terminal 20 is a terminal owned by a subscriber of PLMN (Public Land Mobile Network) #A, and is located in region X of country A.
  • SUCI is information obtained by encrypting SUPI (Subscription Permanent Identifier).
  • SUPI is an identifier for identifying the terminal 20.
  • the AMF 310 refers to the SUCI and confirms (a) whether an initial registration request has been received in the past, (b) whether an authentication vector has been obtained from the AUSF 350, and (c) whether authentication has been completed (step S103).
  • the AMF 310 confirms that "(a) No, (b) No, (c) No”.
  • AMF 310 stores the transmitted SUCI for the procedure described below.
  • FIG. 5 is a sequence diagram showing an example of the flow of the first initial registration procedure in step B according to the embodiment of the present invention.
  • FIG. 5 shows the processing procedure when the satellite moves and covers a specific area (for example, area Y in country A) including a terrestrial network.
  • the satellite can set up a feeder link with a terrestrial gateway.
  • the sanitary AMF 310 transmits a signal indicating a request for "Nausf_UEAuthentication_Authenticate” to the AUSF 350 on the ground (step S201).
  • “Nausf_UEAuthentication_Authenticate” means authentication of the terminal 20.
  • the AUSF 350 transmits a signal indicating a request for "Nudm_UEAuthentication_Get” to the UDM 320, as in the conventional case (step S202).
  • “Nudm_UEAuthentication_Get” means obtaining authentication information for the terminal 20.
  • the UDM 320 transmits a signal indicating a response of "Nudm_UEAuthentication_Get” to the AUSF 350 (step S203).
  • the AUSF 350 authenticates the terminal 20 based on the authentication information of the terminal 20, and transmits a signal indicating the authentication result (that is, a signal indicating the response of "Nausf_UEAuthentication_Authenticate") to the AMF 310 (step S204).
  • the AUSF 350 may send the 5G SE AV (RAND, AUTN, HXRES*) to the AMF 310, similar to the conventional registration process (Step 5 of Section 6.1.3.2.0 of TS 33.501). good.
  • FIG. 6 is a sequence diagram showing an example of the flow of the second initial registration procedure in step A according to the embodiment of the present invention.
  • FIG. 6 shows a processing procedure when the satellite moves further and covers a specific area where the terminal 20 is located (for example, area X in country A).
  • the RAN 10 transmits broadcast information to the terminal 20 (step S301).
  • the transmitted broadcast information includes information indicating that S&F operation is being performed.
  • the terminal 20 transmits a signal indicating a registration request including the SUCI to the AMF 310 (step S302).
  • the terminal 20 uses the same SUCI as the SUCI in step S102 of the initial registration procedure shown in FIG. 4.
  • the AMF 310 refers to the SUCI included in the registration request and the stored SUCI, and determines whether (a) an initial registration request has been received in the past, (b) an authentication vector has been obtained from the AUSF 350, and (c) authentication. It is confirmed whether the process has been completed (step S303).
  • the AMF 310 confirms that the SUCI included in the registration request and the stored SUCI are the same, it confirms "(a) Yes, (b) Yes, (c) No". .
  • the AMF 310 transmits a signal indicating a request for authentication to the terminal 20 (step S304).
  • the terminal 20 transmits a signal indicating a response to authentication "Authentication” (step S305).
  • FIG. 7 is a sequence diagram showing an example of the flow of the second initial registration procedure in step B according to the embodiment of the present invention.
  • FIG. 7 shows the processing procedure when the satellite moves further and covers a specific area (for example, area Y in country A) that includes a terrestrial network.
  • the AMF 310 transmits a signal indicating a request for "Nausf_UEAuthentication_Authenticate" to the AUSF 350 (step S401).
  • the AMF 310 may transmit the RES received from the terminal 20 to the AUSF 350, similar to the conventional registration process (Step 10 of Section 6.1.3.2.0 of TS 33.501).
  • the AUSF 350 authenticates the terminal 20 based on the authentication information of the terminal 20, and transmits a signal indicating the authentication result (that is, a signal indicating the response of "Nausf_UEAuthentication_Authenticate") to the AMF 310 (step S204). For example, the AUSF 350 may check whether the 5G AV has expired, similar to the conventional registration process (Step 11 of Section 6.1.3.2.0 of TS 33.501). AUSF 350 stores the K AUSF based on the home network operator's policy upon successful authentication. AUSF 350 compares the received RES with the stored XRES. AUSF 350 may determine that authentication is successful from the home network's perspective if RES and XRES are equal.
  • the AMF 310 stores information indicating that authentication has been completed in association with the SUCI.
  • FIG. 8 is a sequence diagram showing an example of the flow of the third initial registration procedure in step A according to the embodiment of the present invention.
  • FIG. 8 shows a processing procedure when the satellite moves further and covers a specific area (for example, area X in country A) that includes the terminal 20.
  • the RAN 10 transmits broadcast information to the terminal 20 (step S501).
  • the transmitted broadcast information includes information indicating that S&F operation is being performed.
  • the terminal 20 transmits a signal indicating a registration request including the SUCI to the AMF 310 (step S502).
  • the terminal 20 uses the same SUCI as the SUCI in step S102 of the initial registration procedure shown in FIG. 4 and step S302 of the initial registration procedure shown in FIG. 6.
  • the AMF 310 refers to the SUCI included in the registration request, the stored SUCI, and information indicating that authentication has been completed, and determines whether (a) an initial registration request has been received in the past, or (b) from the AUSF 350. It is confirmed whether the authentication vector has been obtained and (c) whether the authentication has been completed (step S503).
  • the AMF 310 confirms that the SUCI included in the registration request is the same as the stored SUCI and that the authentication is complete, and then confirms that “(a) Yes, (b) Yes, (c ) Yes.
  • the AMF 310 transmits a signal indicating the NAS security mode instruction to the terminal 20 (step S504).
  • the terminal 20 transmits a signal indicating completion of the NAS security mode (step S505). Note that the signal indicating completion of the NAS security mode is encrypted to protect its integrity. Even if the steps up to this point are intercepted and there is a terminal attempting to impersonate the terminal, the impersonation will not be successful because the terminal cannot generate a signal indicating completion of the NAS security mode.
  • the AMF 310 transmits a signal indicating permission for registration to the terminal 20 (step S506).
  • the AMF 310 may send a signal indicating registration permission, similar to the conventional registration process (step 21 of Section 4.2.2.2.2 of TS 23.502).
  • the above-mentioned SUCI may be 5G-GUTI.
  • 5G-GUTI is GUTI (Globally Unique Temporary UE Identity) of the 5G network, and is a temporary identifier of a subscriber.
  • AMF 310 provides information indicating (a) whether an initial registration request has been received in the past, (b) whether an authentication vector has been obtained from AUSF 350, and (c) whether authentication has been completed.
  • the AMF 310 checks the SUCI or 5G-GUTI.
  • the AMF 310 When the AMF 310 confirms that "(a) No, (b) No, (c) No” or "(a) Yes, (b) No, (c) No”, it inquires the AUSF 350. Further, when the AMF 310 confirms “(a) Yes, (b) Yes, (c) No”, it transmits a signal indicating a request for authentication “Authentication” to the terminal 20. Further, when the AMF 310 confirms “(a) Yes, (b) Yes, (c) Yes”, it transmits a signal indicating registration permission to the terminal 20.
  • the terminal 20 may limit the period or number of times the same SUCI is used to a predetermined period or number of times. In that case, the initial registration process ongoing between the terminal 20 and the terrestrial network is reset to the initial state shown in FIG. 4 after the certain period or the certain number of times.
  • the AMF 310 may be located on the ground.
  • the satellite temporarily stores the information received from the terminal 20. Then, the satellite may transmit the stored information to the AMF 310 when executing the functions of the AMF 310 described above in step B of each procedure described above.
  • the AUSF350 may be included in the satellite.
  • the processes shown in FIGS. 7 and 8 described above are executed in the state shown in FIG. 6, that is, in a state in which the satellite covers a specific area where the terminal 20 is located (for example, area X in country A). You can.
  • the AMF 310 stores information indicating the status regarding the progress of the authentication process, and when the terminal resends the registration request, the AMF 310 continues the authentication process based on the status. Thereby, the terminal 20 can complete the terminal registration process in various types of communications via satellite.
  • 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. 9 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. 9 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. 10 is a diagram illustrating 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. 10 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 base station, terminal, or network node of this embodiment may be configured as a base station, terminal, or network node shown in each section below. Additionally, the following communication method may be implemented.
  • a receiving unit that receives a signal requesting initial registration from the terminal and an identifier of the terminal; Store received information indicating the progress status of initial registration in association with the identifier, and respond to the initial registration request transmitted from the terminal identified by the identifier based on the stored information indicating the progress status.
  • a control unit that continues the progress of the initial registration according to the control unit; network node.
  • the control unit determines whether (a) an initial registration request has been received in the past, (b) information regarding authentication has been obtained from a network node having an authentication function of the terminal; and (c) confirming whether the authentication has been completed and continuing the initial registration process according to the confirmation result.
  • Network node according to paragraph 1.
  • the control unit (a) has received an initial registration request in the past, (b) has obtained information regarding authentication from a network node having a terminal authentication function, and ( c) further comprising a transmitting unit that transmits a signal indicating a request for authentication to the terminal when it is confirmed that authentication has not been completed; Network node according to clause 2.
  • the transmitting unit is configured such that the control unit (a) has received an initial registration request in the past, and (b) receives information regarding authentication from a network node having an authentication function of the terminal, based on information indicating the progress status of the initial registration.
  • any of the above configurations provides a technology that makes it possible to complete the registration process of a terminal in various types of communications via satellite.
  • item 1 it is possible to continue the initial registration process based on the stored progress status information in response to the initial registration request transmitted from the terminal identified by the identifier.
  • Paragraph 2 (a) whether an initial registration request has been received in the past, (b) whether information regarding authentication has been obtained from a network node that has an authentication function for the terminal, and (c) whether authentication has been completed. You can confirm and proceed with the initial registration depending on the confirmation results.
  • a signal indicating a request for authentication can be transmitted to the terminal based on information indicating the progress status of initial registration.
  • Section 4 a signal indicating permission for registration can be transmitted to the terminal based on information indicating the progress status of initial registration.
  • 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, judgement, 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. 11 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
  • software modules software modules
  • data etc.
  • the program a program that causes a computer to execute at least part of the operations described in the above embodiments is used.
  • the control unit 140 of the base station 10 shown in FIG. 9 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. 10 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. 12 shows an example of the configuration of the vehicle 2001.
  • a 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.
  • the information service unit 2012 is an output unit that outputs information (for example, outputs information to devices such as a display and a speaker based on the PDSCH (or data/information decoded from the PDSCH) received by the communication module 2013). may be called.
  • the communication module 2013 also stores various information received from external devices into a memory 2032 that can be used by the microprocessor 2031. Based on the information stored in the memory 2032, the microprocessor 2031 controls the drive unit 2002, steering unit 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.
  • the base station 10 and the terminal 20 have been described using functional block diagrams for convenience of processing description, such devices may be implemented in hardware, software, or a combination thereof.
  • the software that runs on the processor of the base station 10 according to the embodiment of the present invention and the software that runs on the processor that the terminal 20 has 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.
  • the base station transmitting information to the terminal may be read as the base station instructing the terminal to control/operate based on the information.
  • 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 body refers to a movable object, and the moving speed is arbitrary. Naturally, this also includes cases where the moving object is stopped.
  • the mobile objects include, for example, vehicles, transport vehicles, automobiles, motorcycles, bicycles, connected cars, excavators, bulldozers, wheel loaders, dump trucks, forklifts, trains, buses, carts, rickshaws, ships and other watercraft.
  • the mobile object may be a mobile object that autonomously travels based on a travel command. It may be a vehicle (e.g. car, airplane, etc.), an unmanned moving object (e.g. drone, self-driving car, etc.), or a robot (manned or unmanned). good.
  • 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” mean that resolving, selecting, choosing, establishing, comparing, etc. are considered to be “judgement” 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.
  • 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.

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  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Selon la présente invention, un nœud réseau comprend : une unité de réception qui reçoit un signal demandant un enregistrement initial à partir d'un terminal, et un identifiant du terminal ; et une unité de commande qui stocke les informations reçues indiquant l'état de progression de l'enregistrement initial en association avec l'identifiant, et continue la progression de l'enregistrement initial, sur la base des informations stockées indiquant l'état de progression, en réponse à la demande d'enregistrement initiale envoyée par le terminal identifié par l'identifiant.
PCT/JP2022/034837 2022-09-16 2022-09-16 Nœud de réseau et procédé de communication WO2024057549A1 (fr)

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Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
CHINA MOBILE: "Solution to mitigate the SUPI guessing attack and SUCI replay attack by adding new MAC tag in SUCI", 3GPP DRAFT; S3-211837, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. SA WG3, no. E-meeting; 20210517 - 20210528, 10 May 2021 (2021-05-10), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP052005420 *
NEC: "modification to the solution 6.2.10", 3GPP DRAFT; S3-212566, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. SA WG3, no. e-meeting; 20210816 - 20210827, 9 August 2021 (2021-08-09), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP052063223 *

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