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WO2024116337A1 - Terminal, station de base, procédé de communication et système de communication sans fil - Google Patents

Terminal, station de base, procédé de communication et système de communication sans fil Download PDF

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Publication number
WO2024116337A1
WO2024116337A1 PCT/JP2022/044217 JP2022044217W WO2024116337A1 WO 2024116337 A1 WO2024116337 A1 WO 2024116337A1 JP 2022044217 W JP2022044217 W JP 2022044217W WO 2024116337 A1 WO2024116337 A1 WO 2024116337A1
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WO
WIPO (PCT)
Prior art keywords
terminal
information
network
integrity protection
confidentiality
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2022/044217
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English (en)
Japanese (ja)
Inventor
淳 巳之口
政宏 澤田
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NTT Docomo Inc
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NTT Docomo Inc
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Filing date
Publication date
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Priority to PCT/JP2022/044217 priority Critical patent/WO2024116337A1/fr
Publication of WO2024116337A1 publication Critical patent/WO2024116337A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/03—Protecting confidentiality, e.g. by encryption
    • H04W12/033—Protecting confidentiality, e.g. by encryption of the user plane, e.g. user's traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/04—Key management, e.g. using generic bootstrapping architecture [GBA]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/10—Integrity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/04—Terminal devices adapted for relaying to or from another terminal or user
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/18—Interfaces between hierarchically similar devices between terminal devices

Definitions

  • the present invention relates to a terminal, a base station, a communication method, and a wireless communication system.
  • NR New Radio
  • LTE Long Term Evolution
  • 5G Core Network which corresponds to EPC (Evolved Packet Core)
  • EPC Evolved Packet Core
  • NG-RAN Next Generation-Radio Access Network
  • E-UTRAN Evolved Universal Terrestrial Radio Access Network
  • RAN Radio Access Network
  • CU separation is specified to separate the U-Plane function, which performs the sending and receiving processing of user data, from the C-Plane function, which performs a series of control processes for establishing communications, etc.
  • HMIs Human Machine Interfaces
  • Even for personally owned devices there may be cases where an HMI suitable for conveying special sensations is used.
  • the present invention has been made in consideration of the above points, and aims to achieve confidentiality and integrity protection between the network and the terminal that processes the U-Plane when the terminal is separated into its CU.
  • a terminal includes a control unit that executes control processing including establishing communication between a network and the terminal, a transmission unit that transmits information indicating the security capabilities of other terminals that execute user data transmission and reception processing to the network, and a reception unit that receives from the network first information used for confidentiality and integrity protection of the other terminals based on the information indicating the security capabilities of the other terminals.
  • the transmission unit transmits the first information and second information used for confidentiality and integrity protection of the other terminals to the other terminals.
  • the disclosed technology makes it possible to achieve confidentiality and integrity protection between the network and the terminal that processes the U-Plane when the terminal is separated into its CU.
  • FIG. 1 is a diagram for explaining a wireless communication system according to an embodiment of the present invention.
  • FIG. 2 is a diagram illustrating an example of the configuration of a core network according to the present embodiment.
  • FIG. 11 is a sequence diagram showing an example of a procedure for establishing cooperation according to the embodiment; 10 is a sequence diagram showing an example of a procedure for updating terminal wireless capabilities and terminal security capabilities according to the present embodiment.
  • FIG. 11 is a diagram illustrating an example of a configuration of a core network according to a modified example of the present embodiment.
  • FIG. 2 is a diagram illustrating an example of a functional configuration of a base station according to the present embodiment.
  • FIG. 2 is a diagram illustrating an example of a functional configuration of a terminal according to the present embodiment.
  • FIG. 2 is a diagram illustrating an example of a hardware configuration of a base station or a terminal according to the present embodiment.
  • 1 is a diagram showing an example of a configuration of a vehicle according to an embodiment of the present invention
  • LTE Long Term Evolution
  • LTE-Advanced LTE-Advanced
  • systems beyond LTE-Advanced e.g., NR
  • SS Synchronization signal
  • PSS Primary SS
  • SSS Secondary SS
  • PBCH Physical broadcast channel
  • PRACH Physical random access channel
  • PDCCH Physical Downlink Control Channel
  • PDSCH Physical Downlink Shared Channel
  • PUCCH Physical Uplink Control Channel
  • PUSCH Physical Uplink Shared Channel
  • the duplex method may be a TDD (Time Division Duplex) method, an FDD (Frequency Division Duplex) method, or another method (e.g., Flexible Duplex, etc.).
  • TDD Time Division Duplex
  • FDD Frequency Division Duplex
  • another method e.g., Flexible Duplex, etc.
  • wireless parameters and the like when wireless parameters and the like are “configured,” this may mean that predetermined values are pre-configured, or that wireless parameters notified from a base station or a terminal are configured.
  • FIG. 1 is a diagram for explaining the wireless communication system according to this embodiment.
  • the wireless communication system includes a base station 10 and a terminal 20.
  • FIG. 1 shows one base station 10 and one terminal 20, this is an example, and there may be 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 the wireless signal are defined in the time domain and the frequency domain, and the time domain may be defined by the number of OFDM (Orthogonal Frequency Division Multiplexing) symbols, and the frequency domain may be defined by the number of subcarriers or the number of resource blocks.
  • the TTI Transmission Time Interval
  • the time domain may be a slot, or the TTI may be a subframe.
  • the base station 10 transmits a synchronization signal and system information to the terminal 20.
  • the synchronization signal is, for example, NR-PSS and NR-SSS.
  • the system information is, for example, transmitted by NR-PBCH and is also called broadcast information.
  • the synchronization signal and system information may be called SSB (SS/PBCH block).
  • the base station 10 transmits a control signal or data to the terminal 20 in DL (Downlink) and receives a control signal or data from the terminal 20 in UL (Uplink). Both the base station 10 and the terminal 20 are capable of transmitting and receiving signals by performing beamforming.
  • both the base station 10 and the terminal 20 are capable of applying communication by MIMO (Multiple Input Multiple Output) to DL or UL.
  • both the base station 10 and the terminal 20 may communicate via a secondary cell (SCell: Secondary Cell) and a primary cell (PCell: Primary Cell) by CA (Carrier Aggregation).
  • SCell Secondary Cell
  • PCell Primary Cell
  • CA Carrier Aggregation
  • the terminal 20 may communicate via a primary cell of the base station 10 and a primary secondary cell group cell (PSCell: Primary SCG Cell) of another base station 10 using DC (Dual Connectivity).
  • DC Direct Connectivity
  • the terminal 20 is a communication device equipped with a wireless communication function, such as a smartphone, a mobile phone, a tablet, a wearable terminal, or a communication module for M2M (Machine-to-Machine). As shown in FIG. 1, the terminal 20 receives control signals or data from the base station 10 in DL and transmits control signals or data to the base station 10 in UL, thereby utilizing various communication services provided by the wireless communication system. The terminal 20 also receives various reference signals transmitted from the base station 10, and performs measurement of propagation path quality based on the reception results of the reference signals.
  • the terminal 20 may be referred to as a UE, and the base station 10 as a gNB.
  • FIG. 2 is a diagram showing an example of the configuration of a core network according to this embodiment.
  • the wireless communication system comprises a MN (Master Node) 10-1, a SN (Secondary Node) 10-2, a UE-CP (UE-C-Plane) 20-1, a UE-UP (UE-U-Plane) 20-2, a core network 30, and a DN (Data Network) 40.
  • MN Master Node
  • SN Service Node
  • UE-CP UE-C-Plane
  • UE-UP UE-U-Plane
  • UE-CP20-1 and UE-UP20-2 are devices having the same hardware configuration as terminal 20.
  • UE-CP20-1 is a device that realizes the C-Plane function in the terminal.
  • UE-UP20-2 is a device that realizes the U-Plane function in the terminal.
  • UE-CP20-1 may be referred to as the terminal C-Plane part.
  • UE-UP20-2 may be referred to as the terminal U-Plane part.
  • MN10-1 and SN10-2 may each be equipment equivalent to a base station when conventional dual connectivity (DC) is implemented.
  • MN10-1 and SN10-2 have functions corresponding to UE-CP20-1 and UE-UP20-2, respectively. That is, MN10-1 communicates with UE-CP20-1, and SN10-2 communicates with UE-UP20-2. Therefore, MN10-1 and SN10-2 only need to be configured to realize CU separation in a base station that corresponds to CU separation in a terminal, and do not need to have the function of realizing conventional dual connectivity.
  • the core network 30 is a network that includes exchanges, subscriber information management devices, etc.
  • the core network 30 includes network nodes that realize U-Plane functions and a group of network nodes that realize C-Plane functions.
  • the U-Plane function is a function that executes the transmission and reception processing of user data.
  • a network node that realizes the U-Plane function is, for example, UPF (User plane function) 380.
  • UPF 380 is a network node that has functions such as a PDU (Protocol Data Unit) session point to the outside for interconnection with DN 40, packet routing and forwarding, and user plane QoS (Quality of Service) handling.
  • UPF 380 controls the transmission and reception of data between DN 40 and UE-CP 20-1 or UE-UP 20-2.
  • UPF 380 and DN 40 may be composed of one or more network slices.
  • the C-Plane function group is a group of functions that execute a series of control processes for establishing communications, etc.
  • 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, NRF (Network Repository Function) 340, AUSF (Authentication Server Function) 350, PCF (Policy Control Function) 360, SMF (Session Management Function) 370, and AF (Application Function) 390.
  • AMF Access and Mobility Management Function
  • UDM Unified Data Management
  • NEF Network Exposure Function
  • NRF Network Repository Function
  • AUSF Authentication Server Function
  • PCF Policy Control Function
  • SMF Session Management Function
  • AF Application Function
  • AMF310 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.
  • NRF340 is a network node having a function of discovering NF (Network Function) instances that provide services.
  • UDM320 is a network node that manages subscriber data and authentication data.
  • UDM320 includes UDR (User Data Repository) 321 that holds the data, and FE (Front End) 322.
  • FE322 processes subscriber information.
  • the SMF 370 is a network node that has functions such as session management, IP (Internet Protocol) address allocation and management for UE-CP 20-1 or UE-UP 20-2, DHCP (Dynamic Host Configuration Protocol) function, ARP (Address Resolution Protocol) proxy, and roaming function.
  • the NEF 330 is a network node that has the function of notifying other NFs (Network Functions) of capabilities and events.
  • the PCF 360 is a network node that has the function of controlling network policies.
  • AF (Application Function) 390 is a network node that has the function of controlling the application server.
  • AMF310 and MN10-1 are connected to be able to communicate as an N2 link.
  • UPF380 and MN10-1 and SN10-2 are connected to be able to communicate as an N3 link.
  • UPF380 and SMF370 are connected to be able to communicate as an N4 link.
  • UPF380 and DN40 are connected to be able to communicate as an N6 link.
  • UE-UPs 20-2 there may be two or more UE-UPs 20-2 corresponding to a UE-CP 20-1.
  • the entities that communicate with the terminals UE-CP 20-1 and UE-UP 20-2 may be referred to as a network.
  • This network may include MN 10-1, SN 10-2, and a core network 30.
  • FIG. 3 is a sequence diagram showing an example of the flow of the association establishment procedure according to this embodiment.
  • UE-CP20-1 sends a "UE-CU Association Setup" request to UE-UP20-2 (step S101).
  • the "UE-CU Association Setup" request includes a terminal Uu radio capability notification request, Uu measurement report configuration information, and a terminal security capability notification request.
  • the terminal Uu radio capability notification request is a notification request of the terminal Uu radio capability.
  • the terminal Uu radio capability is the radio capability of UE-UP20-2.
  • the Uu measurement report configuration information is configuration information for Uu measurement reporting, and includes information for reporting Uu measurements to UE-CP20-1.
  • Uu measurements are measurements of the wireless communication status of UE-UP20-2.
  • the terminal security capability notification request is a notification request of the terminal security capability.
  • the terminal security capability defines the algorithms supported for encryption and integrity protection in the terminal.
  • UE-UP20-2 sends a "UE-CU Association Setup" response to UE-CP20-1 (step S102).
  • the "UE-CU Association Setup" response is a response that includes the terminal Uu radio capabilities of UE-UP20-2, the setting of Uu measurement reports for UE-CP20-1 in UE-UP20-2, and the terminal security capabilities of UE-UP20-2.
  • UE-UP20-2 transmits a Uu measurement report to UE-CP20-1 as appropriate (step S103).
  • the communication between UE-CP20-1 and UE-UP20-2 may or may not use a side link in NR, and may be wireless communication according to a general communication standard, for example.
  • FIG. 4 is a sequence diagram showing an example of the flow of a procedure for updating terminal wireless capabilities and terminal security capabilities according to this embodiment.
  • AMF 310 stores terminal wireless capabilities and terminal security capabilities in advance.
  • the UE-CP20-1 transitions to the idle mode and transmits a mobility registration request to the AMF310 (step S201).
  • the mobility registration request includes an information element indicating that the terminal radio capability has been updated (terminal radio capability update IE) and an information element indicating the terminal security capability (terminal security capability IE).
  • the terminal security capability IE may include information indicating the terminal security capability for UE-CP20-1 (first terminal security capability) and information indicating the terminal security capability for UE-UP20-2 (second terminal security capability).
  • the terminal security capability IE indicates one or more confidentiality algorithms and one or more integrity protection algorithms.
  • the first terminal security capability and the second terminal security capability may each indicate a confidentiality algorithm and an integrity protection algorithm.
  • AMF310 erases the terminal radio capability information of UE-CP20-1 (step S202).
  • AMF310 determines that the first terminal security capability stored in advance and the first terminal security capability in the received terminal security capability IE have not changed, it overwrites the stored terminal security capability with the received terminal security capability IE (step S203).
  • the second terminal security capability stored in AMF310 may be updated, or both the first terminal security capability and the second terminal security capability may be updated.
  • UE-CP20-1 initiates a service request procedure (step S204).
  • the service request procedure may be the same as in the past.
  • FIG. 5 is a sequence diagram showing an example of the flow of a PDU session establishment procedure according to an embodiment of the invention.
  • UE-CP20-1 initiates a PDU session establishment procedure (or a PDU session modification procedure) (step S301). To initiate the PDU session establishment procedure, UE-CP20-1 transmits a PDU Session Establishment Request message to AMF310.
  • the SMF 370 sends a PDU Session Resource Setup Request Transfer or a Namf_Communication_N1N2MessageTransfer including a PDU Session Resource Modify Request Transfer that includes MN-SN separation support information to the AMF 310 (step S302).
  • the MN-SN separation support information is information that indicates the recommended form of flow division between MN 10-1 and SN 10-2.
  • the MN-SN separation support information may be included in the PDU Session Resource Modify Request Transfer.
  • AMF310 sends an Initial Context Setup Request to MN10-1 (step S303).
  • the Initial Context Setup Request includes information indicated in PDU Session Resource Setup Request Transfer or Namf_Communication_N1N2MessageTransfer.
  • the Initial Context Setup Request does not include information indicating the terminal wireless capabilities.
  • the Initial Context Setup Request includes information indicating the terminal security capabilities.
  • the Initial Context Setup Request is used instead of Namf_Communication_N1N2MessageTransfer.
  • MN 10-1 initiates the terminal capability transfer procedure.
  • MN 10-1 transmits a UECapabilityEnquiry message to UE-CP 20-1 (step S304).
  • the UECapabilityEnquiry message is a message requesting transmission of terminal wireless capability information, and may be the same as that of a conventional terminal 20.
  • the UE-CP 20-1 transmits a UECapabilityInformation message to MN 10-1 (step S305).
  • the UECapabilityInformation message is a message indicating terminal wireless capability information.
  • the UECapabilityInformation message includes a first terminal wireless capability indicating the terminal wireless capability of UE-CP 20-1, and a second terminal wireless capability indicating the terminal wireless capability of UE-UP 20-2.
  • MN10-1 stores the received information indicating the first terminal wireless capabilities and the second terminal wireless capabilities.
  • the MN10-1 sends a UE Radio Capability Info Indication message to AMF310 (step S306).
  • the UE Radio Capability Info Indication message indicates terminal capability information including the first terminal radio capability and the second terminal radio capability.
  • MeasurementConfig indicates information about the measurement settings of the received signal of UE-CP 20-1.
  • UE-CP 20-1 measures the received power (Reference Signal Received Power (RSRP)) or the received quality (Reference Signal Received Quality (RSRQ)) of the received signal based on MeasurementConfig.
  • RSRP Reference Signal Received Power
  • RSS Reference Signal Received Quality
  • the MeasurementReport includes a first measurement result indicating the measurement result of UE-CP20-1 and a second measurement result indicating the measurement result of UE-UP20-2.
  • MN10-1 determines whether to add SN10-2 and the flow to be set by SN10-2 based on the MN-SN separation support information, the first terminal radio capability and the second terminal radio capability obtained from UE-CP20-1, the first measurement result, the second measurement result, etc. (step S309).
  • the MN 10-1 selects an SN counter, inputs the selected SN counter into the parameter of K gNB , and derives K SN (step S310).
  • K gNB is a key used for confidentiality and integrity protection between the terminal and the MN 10-1.
  • K SN is a key used for confidentiality and integrity protection between the terminal and the SN 10-2.
  • the MN 10-1 sets up a flow for the SN 10-2 (step S311). For example, the MN 10-1 transmits K SN and a second terminal security capability to the SN 10-2 for setting up the flow for the SN 10-2.
  • the second terminal security capability indicates one or more confidentiality algorithms and one or more integrity protection algorithms.
  • SN10-2 selects a confidentiality algorithm for the second terminal and an integrity protection algorithm for the second terminal from the received second terminal security capabilities, and transmits a response including the selected confidentiality algorithm for the second terminal and integrity protection algorithm for the second terminal to MN10-1 (step S312).
  • MN 10-1 sends an RRC Reconfiguration to UE-CP 20-1 (step S313).
  • the RRC Reconfiguration includes configuration information of SN 10-2 (e.g., secondaryCellGroup IE), a ciphering algorithm for the first terminal, an integrity protection algorithm for the first terminal, a ciphering algorithm for the second terminal, an integrity protection algorithm for the second terminal, and an SN counter.
  • SN 10-2 e.g., secondaryCellGroup IE
  • the UE-CP 20-1 derives K SN based on the SN counter (step S314).
  • the UE-CP 20-1 derives a key K SNUPenc used for concealing user data between the SN 10-2 and the UE-UP 20-2 and a key K SNUPin used for integrity protection based on the derived K SN .
  • the UE-CP 20-1 transmits a UE-UP Addition Request to the UE-UP 20-2 (step S315).
  • the UE-UP Addition Request is a message indicating an addition request for the UE-UP 20-2.
  • the UE-UP Addition Request includes the configuration information of the SN 10-2 (e.g., secondaryCellGroup IE), K UPenc , K UPin , a confidentiality algorithm for the second terminal, and an integrity protection algorithm for the second terminal.
  • the communication method between the UE-CP 20-1 and the UE-UP 20-2 is not limited to a communication method based on a specific technology (such as an NR side link), and may be any communication method.
  • UE-UP 20-2 sends a UE-UP Addition Request Acknowledge to UE-CP 20-1 (step S316).
  • the UE-UP Addition Request Acknowledge is a message indicating approval of the addition request from UE-UP 20-2.
  • RRC Reconfiguration Complete is a message indicating the completion of RRC reconfiguration.
  • MN 10-1 sends SN Reconfiguration Complete to SN 10-2 (step S318).
  • SN Reconfiguration Complete is a message indicating the completion of reconfiguration of SN 10-2.
  • UE-UP 20-2 and SN 10-2 execute a random access procedure (step S319). After the connection between UE-UP 20-2 and SN 10-2 is established, confidentiality and integrity protection are performed.
  • UE-CP20-1 acquires the terminal security capability of UE-UP20-2 from UE-UP20-2, and negotiates with the network using the terminal security capability of UE-UP20-2.
  • UE-CP20-1 notifies UE-UP20-2 of the confidentiality algorithm, the integrity protection algorithm, the key used for confidentiality, and the key used for integrity protection.
  • UE-UP20-2 executes confidentiality and integrity protection between SN10-2 and UE-UP20-2 based on the information notified from UE-CP20-1.
  • the network separates the terminal security capability into a first terminal security capability for UE-CP20-1 and a second terminal security capability for UE-UP20-2 for processing.
  • FIG. 6 is a diagram showing an example of the configuration of a core network according to a modified example of this embodiment.
  • the RAN 10 is connected to the UE-CP 20-1 and the UE-UP 20-2 via wireless communication.
  • the RAN 10 executes the procedures of both the UE-CP 20-1 and the UE-UP 20-2. This makes it possible to realize CU separation of the terminal 20 without separating the RAN 10.
  • the base station 10, the terminal 20, and the various network nodes include functions for performing the above-mentioned embodiments. However, the base station 10, the terminal 20, and the various network nodes may each have only a portion of the functions of the embodiments.
  • FIG. 7 is a diagram showing an example of the functional configuration of the base station 10.
  • the base station 10 has a transmitting unit 110, a receiving unit 120, a setting unit 130, and a control unit 140.
  • the functional configuration shown in FIG. 7 is merely an example. As long as the operation according to this embodiment can be performed, the names of the functional divisions and functional units may be any.
  • a network node may have the same functional configuration as the base station 10.
  • a network node having multiple different functions in the system architecture may be composed of multiple network nodes separated by function.
  • the transmitting unit 110 has 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 has a function of receiving various signals transmitted from the terminal 20 or another network node, and acquiring, for example, information of a higher layer from the received signal.
  • the setting unit 130 stores preset setting information and various setting information to be transmitted to the terminal 20 in a storage device, and reads it from the storage device as necessary.
  • the contents of the setting information include, for example, settings related to communication using NTN.
  • the control unit 140 performs processes related to communication using NTN, as described in the embodiment.
  • the control unit 140 also performs processes related to communication with the terminal 20.
  • the control unit 140 also performs processes related to verifying the geographical position of the terminal 20.
  • the functional unit in the control unit 140 related to signal transmission may be included in the transmitting unit 110, and the functional unit in the control unit 140 related to signal reception may be included in the receiving unit 120.
  • FIG. 8 is a diagram showing an example of the functional configuration of the terminal 20.
  • the terminal 20 has a transmitting unit 210, a receiving unit 220, a setting unit 230, and a control unit 240.
  • the functional configuration shown in FIG. 8 is merely an example. As long as the operation according to this embodiment can be performed, the functional divisions and names of the functional units may be any.
  • the USIM attached to the terminal 20 may have the transmitting unit 210, the receiving unit 220, the setting unit 230, and the control unit 240, just like the terminal 20.
  • the transmitter 210 creates a transmission signal from the transmission data and transmits the transmission signal wirelessly.
  • the receiver 220 receives various signals wirelessly and obtains higher layer signals from the received physical layer signals.
  • the receiver 220 also has the function of receiving NR-PSS, NR-SSS, NR-PBCH, DL/UL control signals, reference signals, etc. transmitted from a network node.
  • 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 terminal and base station of this embodiment may be configured as the terminal and base station shown in the following items.
  • the following communication method may be implemented.
  • the terminal includes a control unit that executes control processing including establishing communication between the network and the terminal, a transmission unit that transmits information indicating the security capabilities of other terminals that execute user data transmission and reception processing to the network, and a reception unit that receives from the network first information used for confidentiality and integrity protection of the other terminals based on the information indicating the security capabilities of the other terminals, and the transmission unit transmits the first information and second information used for confidentiality and integrity protection of the other terminals to the other terminals.
  • the transmission unit transmits information indicating the security capabilities of the terminal and the information indicating the security capabilities of the other terminal to the network.
  • the first information includes a confidentiality algorithm used for confidentiality of the other terminal and an integrity protection algorithm used for integrity protection
  • the second information includes a confidentiality key and an integrity protection key for the other terminal.
  • the base station includes a receiving unit that receives information indicating the security capabilities of a second terminal that performs user data transmission and reception processing from a first terminal that performs control processing including establishing communications, and a transmitting unit that transmits to the first terminal first information used for confidentiality and integrity protection of the second terminal based on the information indicating the security capabilities of the second terminal.
  • the communication method executed by the terminal includes the steps of: executing a control process including establishing communication between a network and the terminal; transmitting information indicating the security capabilities of another terminal executing a process of transmitting and receiving user data to the network; receiving first information from the network, the first information being used for confidentiality and integrity protection of the other terminal based on the information indicating the security capabilities of the other terminal; and transmitting the first information and second information being used for confidentiality and integrity protection of the other terminal to the other terminal.
  • the wireless communication system includes a first terminal, a second terminal, and a network.
  • the first terminal executes a control process including establishing communication between the network and the terminal.
  • the method includes transmitting information indicating a security capability of the second terminal that executes a process of transmitting and receiving user data to the network.
  • the network transmits to the first terminal first information used for confidentiality and integrity protection of the second terminal based on the information indicating the security capability of the second terminal.
  • the first terminal transmits to the second terminal the first information and second information used for confidentiality and integrity protection of the second terminal. After a connection between the network and the second terminal is completed, the second terminal performs confidentiality and integrity protection between the network and the second terminal using the first information and the second information.
  • the above configurations enable confidentiality and integrity protection between the terminal U-Plane unit and the network, which could not be achieved with conventional terminal CU separation technology.
  • the first information received by the terminal can include a confidentiality algorithm used for confidentiality of other terminals and an integrity protection algorithm used for integrity protection
  • the second information transmitted by the terminal can include a confidentiality key and integrity protection key for other terminals.
  • each functional block may be realized using one device that is physically or logically coupled, or may be realized using two or more devices that are physically or logically separated and directly or indirectly connected (e.g., using wires, wirelessly, etc.).
  • the functional blocks may be realized by combining the one device or the multiple devices with software.
  • Functions include, but are not limited to, judgement, determination, judgment, calculation, computation, processing, derivation, investigation, search, confirmation, reception, transmission, output, access, resolution, selection, election, establishment, comparison, assumption, expectation, regard, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, and assignment.
  • a functional block (component) that performs the transmission function is called a transmitting unit or transmitter.
  • the network node, terminal 20, etc. in one embodiment of the present disclosure may function as a computer that performs processing of the wireless communication method of the present disclosure.
  • FIG. 9 is a diagram showing an example of the hardware configuration of the base station 10 and the terminal 20 according to one embodiment of the present disclosure.
  • the network node may have a hardware configuration similar to that of the base station 10.
  • the USIM may have a hardware configuration similar to that of the terminal 20.
  • the above-mentioned base station 10 and terminal 20 may be physically configured as a computer device including a processor 1001, a storage device 1002, an auxiliary storage device 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, etc.
  • the term "apparatus" can be interpreted as a circuit, device, unit, etc.
  • the hardware configuration of the base station 10 and the terminal 20 may be configured to include one or more of the devices shown in the figure, or may be configured to exclude some of the devices.
  • the functions of the base station 10 and the terminal 20 are realized by loading specific software (programs) onto hardware such as the processor 1001 and the storage device 1002, causing the processor 1001 to perform calculations, control communications by the communication device 1004, and control at least one of the reading and writing of data in the storage device 1002 and the auxiliary storage device 1003.
  • the processor 1001 for example, operates an operating system to control the entire computer.
  • the processor 1001 may be configured as a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic unit, registers, etc.
  • CPU central processing unit
  • control unit 140, control unit 240, etc. may be realized by the processor 1001.
  • the processor 1001 reads out a program (program code), software module, data, etc. from at least one of the auxiliary storage device 1003 and the communication device 1004 to the storage device 1002, and executes various processes according to the program.
  • the program is a program that causes a computer to execute at least a part of the operations described in the above embodiment.
  • the control unit 140 of the base station 10 shown in FIG. 7 may be stored in the storage device 1002 and realized by a control program that runs on the processor 1001.
  • the control unit 240 of the terminal 20 shown in FIG. 8 may be stored in the storage device 1002 and realized by a control program that runs on the processor 1001.
  • the processor 1001 may be implemented by one or more chips.
  • the program may be transmitted from a network via a telecommunication line.
  • the storage device 1002 is a computer-readable recording medium and may be composed of, for example, at least one of a ROM (Read Only Memory), an EPROM (Erasable Programmable ROM), an EEPROM (Electrically Erasable Programmable ROM), a RAM (Random Access Memory), etc.
  • the storage device 1002 may also be called a register, a cache, a main memory, etc.
  • the storage device 1002 can store executable programs (program codes), software modules, etc. for implementing a communication method according to one embodiment of the present disclosure.
  • the auxiliary storage device 1003 is a computer-readable recording medium, and may be, for example, at least one of an optical disk such as a CD-ROM (Compact Disc ROM), a hard disk drive, a flexible disk, a magneto-optical disk (e.g., a compact disk, a digital versatile disk, a Blu-ray (registered trademark) disk), a smart card, a flash memory (e.g., a card, a stick, a key drive), a floppy (registered trademark) disk, a magnetic strip, etc.
  • the above-mentioned storage medium may be, for example, a database, a server, or other suitable medium that includes at least one of the storage device 1002 and the auxiliary storage device 1003.
  • the communication device 1004 is hardware (transmitting/receiving device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as, for example, a network device, a network controller, a network card, a communication module, etc.
  • the communication device 1004 may be configured to include a high-frequency switch, a duplexer, a filter, a frequency synthesizer, etc., to realize at least one of, for example, Frequency Division Duplex (FDD) and Time Division Duplex (TDD).
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • the transmitting/receiving antenna, an amplifier unit, a transmitting/receiving unit, a transmission path interface, etc. may be realized by the communication device 1004.
  • the transmitting/receiving unit may be implemented as a transmitting unit or a receiving unit that is physically or logically separated.
  • the input device 1005 is an input device (e.g., a keyboard, a mouse, a microphone, a switch, a button, a sensor, etc.) that accepts input from the outside.
  • the output device 1006 is an output device (e.g., a display, a speaker, an LED lamp, etc.) that performs output to the outside. Note that the input device 1005 and the output device 1006 may be integrated into one structure (e.g., a touch panel).
  • each device such as the processor 1001 and the storage device 1002 is connected by a bus 1007 for communicating information.
  • the bus 1007 may be configured using a single bus, or may be configured using different buses between each device.
  • the base station 10 and the terminal 20 may be configured to include hardware such as a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), or a field programmable gate array (FPGA), and some or all of the functional blocks may be realized by the hardware.
  • the processor 1001 may be implemented using at least one of these pieces of hardware.
  • FIG. 10 shows an example configuration of a vehicle 2001.
  • the vehicle 2001 includes a drive unit 2002, a steering unit 2003, an accelerator pedal 2004, a brake pedal 2005, a shift lever 2006, front wheels 2007, rear wheels 2008, an axle 2009, an electronic control unit 2010, various sensors 2021-2029, an information service unit 2012, and a communication module 2013.
  • a communication device mounted on the vehicle 2001 may be applied to the communication module 2013, for example.
  • the drive unit 2002 is composed of, for example, an engine, a motor, or a hybrid of an engine and a motor.
  • the steering unit 2003 includes at least a steering wheel (also called a handlebar), and is configured to steer at least one of the front wheels and the rear wheels based on the operation of the steering wheel operated by the user.
  • the electronic control unit 2010 is composed of a microprocessor 2031, memory (ROM, RAM) 2032, and a communication port (IO port) 2033. Signals are input to the electronic control unit 2010 from various sensors 2021 to 2029 provided in the vehicle 2001.
  • the electronic control unit 2010 may also be called an ECU (Electronic Control Unit).
  • Signals from the various sensors 2021-2029 include a current signal from a current sensor 2021 that senses the motor current, a front and rear wheel rotation speed signal obtained by a rotation speed sensor 2022, a front and rear wheel air pressure signal obtained by an air pressure sensor 2023, a vehicle speed signal obtained by a vehicle speed sensor 2024, an acceleration signal obtained by an acceleration sensor 2025, an accelerator pedal depression amount signal obtained by an accelerator pedal sensor 2029, a brake pedal depression amount signal obtained by a brake pedal sensor 2026, a shift lever operation signal obtained by a shift lever sensor 2027, and a detection signal for detecting obstacles, vehicles, pedestrians, etc. obtained by an object detection sensor 2028.
  • the information service unit 2012 is composed of various devices, such as a car navigation system, an audio system, speakers, a television, and a radio, for providing various information such as driving information, traffic information, and entertainment information, and one or more ECUs for controlling these devices.
  • the information service unit 2012 uses information acquired from external devices via the communication module 2013, etc., to provide various multimedia information and multimedia services to the occupants of the vehicle 2001.
  • the driving assistance system unit 2030 is composed of various devices that provide functions for preventing accidents and reducing the driving burden on the driver, such as a millimeter wave radar, LiDAR (Light Detection and Ranging), a camera, a positioning locator (e.g., GNSS, etc.), map information (e.g., high definition (HD) maps, autonomous vehicle (AV) maps, etc.), a gyro system (e.g., IMU (Inertial Measurement Unit), INS (Inertial Navigation System), etc.), AI (Artificial Intelligence) chip, and AI processor, as well as one or more ECUs that control these devices.
  • the driving assistance system unit 2030 transmits and receives various information via the communication module 2013 to realize driving assistance functions or autonomous driving functions.
  • the communication module 2013 can communicate with the microprocessor 2031 and components of the vehicle 2001 via the communication port.
  • the communication module 2013 transmits and receives data via the communication port 2033 between the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, front wheels 2007, rear wheels 2008, axle 2009, microprocessor 2031 and memory (ROM, RAM) 2032 in the electronic control unit 2010, and sensors 2021 to 29, which are provided on the vehicle 2001.
  • the communication module 2013 is a communication device that can be controlled by the microprocessor 2031 of the electronic control unit 2010 and can communicate with an external device. For example, it transmits and receives various information to and from the external device via wireless communication.
  • the communication module 2013 may be located either inside or outside the electronic control unit 2010.
  • the external device may be, for example, a base station, a mobile station, etc.
  • the communication module 2013 transmits the current signal from the current sensor input to the electronic control unit 2010 to an external device via wireless communication.
  • the communication module 2013 also transmits to the external device via wireless communication the following signals input to the electronic control unit 2010: the rotation speed signal of the front and rear wheels acquired by the rotation speed sensor 2022, the air pressure signal of the front and rear wheels acquired by the air pressure sensor 2023, the vehicle speed signal acquired by the vehicle speed sensor 2024, the acceleration signal acquired by the acceleration sensor 2025, the accelerator pedal depression amount signal acquired by the accelerator pedal sensor 2029, the brake pedal depression amount signal acquired by the brake pedal sensor 2026, the shift lever operation signal acquired by the shift lever sensor 2027, and the detection signal for detecting obstacles, vehicles, pedestrians, etc. acquired by the object detection sensor 2028.
  • the communication module 2013 receives various information (traffic information, signal information, vehicle distance information, etc.) transmitted from an external device, and displays it on the information service unit 2012 provided in the vehicle 2001.
  • the communication module 2013 also stores the various information received from the external device in a memory 2032 that can be used by the microprocessor 2031. Based on the information stored in the memory 2032, the microprocessor 2031 may control the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, front wheels 2007, rear wheels 2008, axles 2009, sensors 2021 to 2029, etc. provided in the vehicle 2001.
  • the order of processing procedures described in the embodiment may be changed as long as there is no contradiction.
  • the base station 10 and the terminal 20 have been described using functional block diagrams, but such devices may be realized by hardware, software, or a combination thereof.
  • the software operated by the processor of the base station 10 according to this embodiment and the software operated by the processor of the terminal 20 according to this embodiment may each be stored in random access memory (RAM), flash memory, read-only memory (ROM), EPROM, EEPROM, register, hard disk (HDD), removable disk, CD-ROM, database, server, or any other suitable storage medium.
  • the notification of information is not limited to the aspects/embodiments described in the present disclosure and may be performed using other methods.
  • the notification of information may be performed by physical layer signaling (e.g., Downlink Control Information (DCI), Uplink Control Information (UCI)), higher layer signaling (e.g., Radio Resource Control (RRC) signaling, Medium Access Control (MAC) signaling), broadcast information (Master Information Block (MIB), System Information Block (SIB)), other signals, or a combination of these.
  • RRC signaling may be referred to as an RRC message, and may be, for example, an RRC Connection Setup message, an RRC Connection Reconfiguration message, etc.
  • Each aspect/embodiment described in this disclosure may be a mobile communication system (mobile communications system) for mobile communications over a wide range of networks, including LTE (Long Term Evolution), LTE-A (LTE-Advanced), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), 5G (5th generation mobile communication system), 6th generation mobile communication system (6G), xth generation mobile communication system (xG) (xG (x is, for example, an integer or a decimal number)), FRA (Future Ra).
  • the present invention may be applied to at least one of systems using IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802.16 (WiMAX (registered trademark)), IEEE 802.20, UWB (Ultra-WideBand), Bluetooth (registered trademark), and other appropriate systems, and next-generation systems that are expanded, modified, created, or defined based on these. It may also be applied to a combination of multiple systems (for example, a combination of at least one
  • certain operations that are described as being performed by the base station 10 may in some cases be performed by its upper node.
  • various operations performed for communication with a terminal 20 may be performed by at least one of the base station 10 and other network nodes other than the base station 10 (such as, but not limited to, an MME or S-GW).
  • the base station 10 may be a combination of multiple other network nodes (such as an MME and an S-GW).
  • the information or signals described in this disclosure may be output from a higher layer (or a lower layer) to a lower layer (or a higher layer). They may be input and output via multiple network nodes.
  • the input and output information may be stored in a specific location (e.g., memory) or may be managed using a management table.
  • the input and output information may be overwritten, updated, or added to.
  • the output information may be deleted.
  • the input information may be sent to another device.
  • the determination in this disclosure may be based on a value represented by one bit (0 or 1), a Boolean (true or false) value, or a comparison of numerical values (e.g., a comparison with a predetermined value).
  • Software shall be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures, functions, etc., whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise.
  • Software, instructions, information, etc. may also be transmitted and received via a transmission medium.
  • a transmission medium For example, if the software is transmitted from a website, server, or other remote source using at least one of wired technologies (such as coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL)), and/or wireless technologies (such as infrared, microwave), then at least one of these wired and wireless technologies is included within the definition of a transmission medium.
  • wired technologies such as coaxial cable, fiber optic cable, twisted pair, Digital Subscriber Line (DSL)
  • wireless technologies such as infrared, microwave
  • the information, signals, etc. described in this disclosure may be represented using any of a variety of different technologies.
  • the data, instructions, commands, information, signals, bits, symbols, chips, etc. that may be referred to throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, optical fields or photons, or any combination thereof.
  • the channel and the symbol may be a signal (signaling).
  • the signal may be a message.
  • the component carrier (CC) may be called a carrier frequency, a cell, a frequency carrier, etc.
  • system and “network” are used interchangeably.
  • a radio resource may be indicated by an index.
  • the names used for the above-mentioned parameters are not limiting in any respect. Furthermore, the formulas etc. using these parameters may differ from those explicitly disclosed in this disclosure.
  • the various channels (e.g., PUCCH, PDCCH, etc.) and information elements may be identified by any suitable names, and therefore the various names assigned to these various channels and information elements are not limiting in any respect.
  • base station BS
  • radio base station base station
  • base station fixed station
  • NodeB eNodeB
  • gNodeB gNodeB
  • access point e.g., "transmission point”
  • gNodeB gNodeB
  • a base station may also be referred to by terms such as macrocell, small cell, femtocell, and picocell.
  • a base station can accommodate one or more (e.g., three) cells.
  • a base station accommodates multiple cells, the entire coverage area of the base station can be divided into multiple smaller areas, and each smaller area can also provide communication services by a base station subsystem (e.g., a small indoor base station (RRH: Remote Radio Head)).
  • RRH Remote Radio Head
  • the term "cell” or “sector” refers to a part or the entire coverage area of at least one of the base station and base station subsystems that provide communication services in this coverage.
  • MS Mobile Station
  • UE User Equipment
  • a mobile station may also be referred to by those skilled in the art as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable terminology.
  • At least one of the base station and the mobile station may be called a transmitting device, a receiving device, a communication device, etc.
  • At least one of the base station and the mobile station may be a device mounted on a moving body, or the moving body itself, etc.
  • the moving body may be a vehicle (e.g., a car, an airplane, etc.), an unmanned moving body (e.g., a drone, an autonomous vehicle, etc.), or a robot (manned or unmanned).
  • At least one of the base station and the mobile station may include a device that does not necessarily move during communication operations.
  • at least one of the base station and the mobile station may be an IoT (Internet of Things) device such as a sensor.
  • IoT Internet of Things
  • the base station in the present disclosure may be read as a user terminal.
  • each aspect/embodiment of the present disclosure may be applied to a configuration in which communication between a base station and a user terminal is replaced with communication between multiple terminals 20 (which may be called, for example, D2D (Device-to-Device) or V2X (Vehicle-to-Everything)).
  • the terminal 20 may be configured to have the functions of the base station 10 described above.
  • terms such as "uplink” and "downlink” may be read as terms corresponding to terminal-to-terminal communication (for example, "side").
  • the uplink channel, downlink channel, etc. may be read as a side channel.
  • the user terminal in this disclosure may be interpreted as a base station.
  • the base station may be configured to have the functions of the user terminal described above.
  • determining may encompass a wide variety of actions.
  • Determining and “determining” may include, for example, judging, calculating, computing, processing, deriving, investigating, looking up, search, inquiry (e.g., searching in a table, database, or other data structure), and considering ascertaining as “judging” or “determining.”
  • determining and “determining” may include receiving (e.g., receiving information), transmitting (e.g., sending information), input, output, accessing (e.g., accessing data in memory), and considering ascertaining as “judging” or “determining.”
  • judgment” and “decision” can include considering resolving, selecting, choosing, establishing, comparing, etc., to have been “judged” or “decided.” In other words, “judgment” and “decision” can include considering some action to have been “judged” or “decided.” Additionally, “judgment (decision)” can be interpreted as “assuming,” “ex
  • connection refers to any direct or indirect connection or coupling between two or more elements, and may include the presence of one or more intermediate elements between two elements that are “connected” or “coupled” to each other.
  • the coupling or connection between elements may be physical, logical, or a combination thereof.
  • “connected” may be read as "access.”
  • two elements may be considered to be “connected” or “coupled” to each other using at least one of one or more wires, cables, and printed electrical connections, as well as electromagnetic energy having wavelengths in the radio frequency range, microwave range, and optical (both visible and invisible) range, as some non-limiting and non-exhaustive examples.
  • the reference signal may also be abbreviated as RS (Reference Signal) or may be called a pilot depending on the applicable standard.
  • the phrase “based on” does not mean “based only on,” unless expressly stated otherwise. In other words, the phrase “based on” means both “based only on” and “based at least on.”
  • any reference to an element using a designation such as "first,” “second,” etc., used in this disclosure does not generally limit the quantity or order of those elements. These designations may be used in this disclosure as a convenient method of distinguishing between two or more elements. Thus, a reference to a first and a second element does not imply that only two elements may be employed or that the first element must precede the second element in some way.
  • a radio frame may be composed of one or more frames in the time domain. Each of the one or more frames in the time domain may be called a subframe. A subframe may further be composed of one or more slots in the time domain. A subframe may have a fixed time length (e.g., 1 ms) that is independent of numerology.
  • Numerology may be a communication parameter that applies to at least one of the transmission and reception of a signal or channel. Numerology may indicate, for example, at least one of the following: subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame structure, a specific filtering process performed by the transceiver in the frequency domain, a specific windowing process performed by the transceiver in the time domain, etc.
  • SCS subcarrier spacing
  • TTI transmission time interval
  • radio frame structure a specific filtering process performed by the transceiver in the frequency domain
  • a specific windowing process performed by the transceiver in the time domain etc.
  • a slot may consist of one or more symbols in the time domain (such as OFDM (Orthogonal Frequency Division Multiplexing) symbols, SC-FDMA (Single Carrier Frequency Division Multiple Access) symbols, etc.).
  • a slot may be a time unit based on numerology.
  • a slot may include multiple minislots. Each minislot may consist of one or multiple symbols in the time domain. A minislot may also be called a subslot. A minislot may consist of fewer symbols than a slot.
  • a PDSCH (or PUSCH) transmitted in a time unit larger than a minislot may be called PDSCH (or PUSCH) mapping type A.
  • a PDSCH (or PUSCH) transmitted using a minislot may be called PDSCH (or PUSCH) mapping type B.
  • Radio frame, subframe, slot, minislot, and symbol all represent time units for transmitting signals. Radio frame, subframe, slot, minislot, and symbol may each be referred to by a different name that corresponds to the radio frame, subframe, slot, minislot, and symbol.
  • one subframe may be called a Transmission Time Interval (TTI)
  • TTI Transmission Time Interval
  • multiple consecutive subframes may be called a TTI
  • one slot or one minislot may be called a TTI.
  • at least one of the subframe and the TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (e.g., 1-13 symbols), or a period longer than 1 ms.
  • the unit representing the TTI may be called a slot, minislot, etc., instead of a subframe.
  • TTI refers to, for example, the smallest time unit for scheduling in wireless communication.
  • a base station performs scheduling to allocate wireless resources (such as frequency bandwidth and transmission power that can be used by each terminal 20) to each terminal 20 in TTI units.
  • wireless resources such as frequency bandwidth and transmission power that can be used by each terminal 20
  • TTI is not limited to this.
  • the TTI may be a transmission time unit for a channel-coded data packet (transport block), a code block, a code word, etc., or may be a processing unit for scheduling, link adaptation, etc.
  • the time interval e.g., the number of symbols
  • the time interval in which a transport block, a code block, a code word, etc. is actually mapped may be shorter than the TTI.
  • one or more TTIs may be the minimum time unit of scheduling.
  • the number of slots (minislots) that constitute the minimum time unit of scheduling may be controlled.
  • a TTI having a time length of 1 ms may be called a normal TTI (TTI in LTE Rel. 8-12), normal TTI, long TTI, normal subframe, normal subframe, long subframe, slot, etc.
  • TTI shorter than a normal TTI may be called a shortened TTI, short TTI, partial or fractional TTI, shortened subframe, short subframe, minislot, subslot, slot, etc.
  • a long TTI (e.g., a normal TTI, a subframe, etc.) may be interpreted as a TTI having a time length of more than 1 ms
  • a short TTI e.g., a shortened TTI, etc.
  • TTI length shorter than the TTI length of a long TTI and equal to or greater than 1 ms.
  • a resource block is a resource allocation unit in the time domain and frequency domain, and may include one or more consecutive subcarriers in the frequency domain.
  • the number of subcarriers included in an RB may be the same regardless of the numerology, and may be, for example, 12.
  • the number of subcarriers included in an RB may be determined based on the numerology.
  • the time domain of an RB may include one or more symbols and may be one slot, one minislot, one subframe, or one TTI in length.
  • One TTI, one subframe, etc. may each be composed of one or more resource blocks.
  • one or more RBs may be referred to as a physical resource block (PRB), a sub-carrier group (SCG), a resource element group (REG), a PRB pair, an RB pair, etc.
  • PRB physical resource block
  • SCG sub-carrier group
  • REG resource element group
  • PRB pair an RB pair, etc.
  • a resource block may be composed of one or more resource elements (REs).
  • REs resource elements
  • one RE may be a radio resource area of one subcarrier and one symbol.
  • a bandwidth part which may also be referred to as a partial bandwidth, may represent a subset of contiguous common resource blocks (RBs) for a given numerology on a given carrier, where the common RBs may be identified by an index of the RB relative to a common reference point of the carrier.
  • PRBs may be defined in a BWP and numbered within the BWP.
  • the BWP may include a BWP for UL (UL BWP) and a BWP for DL (DL BWP).
  • UL BWP UL BWP
  • DL BWP DL BWP
  • One or more BWPs may be configured within one carrier for the terminal 20.
  • At least one of the configured BWPs may be active, and the terminal 20 may not be expected to transmit or receive a specific signal/channel outside the active BWP.
  • BWP bit stream
  • radio frames, subframes, slots, minislots, and symbols are merely examples.
  • the number of subframes included in a radio frame, the number of slots per subframe or radio frame, the number of minislots included in a slot, the number of symbols and RBs included in a slot or minislot, the number of subcarriers included in an RB, as well as the number of symbols in a TTI, the symbol length, and the cyclic prefix (CP) length can be changed in various ways.
  • a and B are different may mean “A and B are different from each other.”
  • the term may also mean “A and B are each different from C.”
  • Terms such as “separate” and “combined” may also be interpreted in the same way as “different.”
  • notification of specific information is not limited to being done explicitly, but may be done implicitly (e.g., not notifying the specific information).
  • Base Station 10-1 M.N. 10-2 S.N. 110 Transmission unit 120 Reception unit 130 Setting unit 140 Control unit 20 Terminal 20-1 UE-CP 20-2 UE-UP 30 Core network 40 DN 210 Transmission unit 220 Reception unit 230 Setting unit 240 Control unit 310 AMF 320 U.D.M. 330 NEF 340 NRF 350 AUSF 360 PCF 370 SMF 380 U.P.F.

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Abstract

Le terminal selon la présente invention comprend : une unité de commande pour exécuter un processus de commande comprenant l'établissement d'une communication entre un réseau et le terminal ; une unité de transmission pour transmettre, au réseau, des informations indiquant la capacité de sécurité d'un autre terminal qui exécute un processus de transmission/réception pour des données d'utilisateur ; et une unité de réception pour recevoir, en provenance du réseau, des premières informations destinées à être utilisées dans la dissimulation et la protection d'intégrité de l'autre terminal sur la base des informations indiquant la capacité de sécurité de l'autre terminal. L'unité de transmission transmet, à l'autre terminal, des secondes informations destinées à être utilisées dans la dissimulation et la protection d'intégrité de l'autre terminal, et les premières informations.
PCT/JP2022/044217 2022-11-30 2022-11-30 Terminal, station de base, procédé de communication et système de communication sans fil Ceased WO2024116337A1 (fr)

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Publication number Priority date Publication date Assignee Title
JP2013544452A (ja) * 2010-09-16 2013-12-12 クゥアルコム・インコーポレイテッド プロキシデバイスを使用したワイヤレスクライアント端末の電力節約およびシステムレイテンシの低減
JP2019521612A (ja) * 2016-07-14 2019-07-25 ノキア・オブ・アメリカ・コーポレイション ワイヤレスネットワークにおけるカバレージ及びリソース制限デバイスをサポートするためのレイヤ２リレー

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