WO2023145032A1 - Noeud de réseau, station de base, réseau central et procédé de communication - Google Patents

Noeud de réseau, station de base, réseau central et procédé de communication Download PDF

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Publication number
WO2023145032A1
WO2023145032A1 PCT/JP2022/003457 JP2022003457W WO2023145032A1 WO 2023145032 A1 WO2023145032 A1 WO 2023145032A1 JP 2022003457 W JP2022003457 W JP 2022003457W WO 2023145032 A1 WO2023145032 A1 WO 2023145032A1
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Prior art keywords
terminal
communication
network
information
network node
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PCT/JP2022/003457
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English (en)
Japanese (ja)
Inventor
淳 巳之口
ジャリ マティカイネン
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株式会社Ｎｔｔドコモ
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Priority to PCT/JP2022/003457 priority Critical patent/WO2023145032A1/fr
Publication of WO2023145032A1 publication Critical patent/WO2023145032A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/16—Performing reselection for specific purposes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/30—Connection release
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices
    • 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
    • H04W88/18—Service support devices; Network management devices

Definitions

  • the present invention relates to network nodes, base stations, core networks and communication methods in wireless communication systems.
  • NR New Radio
  • LTE Long Term Evolution
  • EPC Evolved Packet Core
  • NG-RAN Next Generation-Radio Access Network
  • E-UTRAN Evolved Universal Terrestrial Radio Access Network
  • RAN Radio Access Network
  • Non-Patent Document 1 Non-Patent Document 1
  • NR is considering Time Sensitive Communication (TSC).
  • TSC Time Sensitive Communication
  • a CNC Centralized Network Configuration
  • 5GS 5G system
  • Non-Patent Documents 1 and 2 Non-Patent Documents 1 and 2.
  • the present invention has been made in view of the above points, and it is an object of the present invention to flexibly adapt time-sensitive communication in a wireless communication system to changes in bridge delay values.
  • a receiving unit for receiving a terminal movement schedule notification indicating that the terminal is scheduled to move to change the wireless communication network of the communication destination; a transmitter for instructing other network nodes to release the PDU session of the network node.
  • a technique that enables time-sensitive communication in a wireless communication system to flexibly respond to changes in bridge delay values.
  • FIG. 1 is a diagram for explaining a radio communication system according to an embodiment of the present invention
  • FIG. It is a figure which shows an example of a structure of the core network which concerns on embodiment of this invention.
  • FIG. 4 is a sequence diagram showing an example of the flow of basic procedures of time-sensitive communication;
  • FIG. 4 is a sequence diagram showing an example of the flow of a network preparation procedure according to Example 1 of the embodiment of the present invention;
  • FIG. 4 is a sequence diagram showing an example of the flow of a bridge reporting procedure according to Example 1 of the embodiment of the present invention;
  • FIG. 5 is a sequence diagram showing an example of the flow of a bridge delay value update procedure according to Example 1 of the embodiment of the present invention;
  • FIG. 4 is a sequence diagram showing an example of the flow of basic procedures of time-sensitive communication
  • FIG. 4 is a sequence diagram showing an example of the flow of a network preparation procedure according to Example 1 of the embodiment of the present invention
  • FIG. 4 is a sequence diagram showing an example of the flow of
  • FIG. 10 is a sequence diagram showing an example of the flow of a terminal registration procedure according to Example 2 of the embodiment of the present invention
  • FIG. 10 is a sequence diagram showing an example of the flow of a PDU session change procedure in a bridge setting procedure according to Example 2 of the embodiment of the present invention
  • FIG. 9 is a sequence diagram showing an example of the flow of a terminal movement procedure according to Example 2 of the embodiment of the present invention
  • It is a figure showing an example of functional composition of a base station concerning an embodiment of the invention.
  • It is a figure which shows an example of the functional structure of the terminal which concerns on embodiment of this invention.
  • It is a figure which shows an example of the hardware configuration of the base station or terminal which concerns on embodiment of this invention.
  • It is a figure showing an example of composition of vehicles concerning an embodiment of the invention.
  • existing technology may be used as appropriate.
  • the existing technology is, for example, existing NR or LTE, but is not limited to existing NR or LTE.
  • LTE Long Term Evolution
  • LTE-Advanced and LTE-Advanced and subsequent systems eg, 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 system may be a TDD (Time Division Duplex) system, an FDD (Frequency Division Duplex) system, or other (for example, Flexible Duplex etc.) method may be used.
  • TDD Time Division Duplex
  • FDD Frequency Division Duplex
  • configure of wireless parameters and the like may mean that predetermined values are pre-configured (pre-configured).
  • the wireless parameters notified from may be set.
  • FIG. 1 is a diagram for explaining a radio communication system according to an embodiment of the present invention.
  • a radio communication system according to an 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 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.
  • a physical resource of a radio signal is defined in the time domain and the frequency domain.
  • the time domain may be defined by the number of OFDM (Orthogonal Frequency Division Multiplexing) symbols, and the frequency domain is defined by the number of subcarriers or the number of resource blocks. good too.
  • a TTI Transmission Time Interval
  • a TTI Transmission Time Interval
  • the base station 10 transmits the synchronization signal and system information to the terminal 20.
  • Synchronization signals are, for example, NR-PSS and NR-SSS.
  • the system information is transmitted by, for example, 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 control signals or data to the terminal 20 on DL (Downlink) and receives control signals or data from the terminal 20 on UL (Uplink).
  • Both the base station 10 and the terminal 20 can perform beamforming to transmit and receive signals.
  • 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: 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 by DC (Dual Connectivity).
  • DC Dual Connectivity
  • the terminal 20 is a communication device with a wireless communication function, such as a smartphone, mobile phone, tablet, wearable terminal, or M2M (Machine-to-Machine) communication module. As shown in FIG. 1 , the terminal 20 receives control signals or data from the base station 10 on the DL and transmits control signals or data to the base station 10 on the UL, thereby performing various functions provided by the wireless communication system. Use communication services. Also, the terminal 20 receives various reference signals transmitted from the base station 10, and measures channel quality based on the reception result of the reference signals. Note that the terminal 20 may be called UE, and the base station 10 may be called gNB.
  • FIG. 2 is a diagram showing an example of the configuration of the core network according to the embodiment of the present invention.
  • the wireless communication system includes a RAN (Radio Access Network) 10, a terminal 20, a core network 30, a DN (Data Network) 40, a CNC (Centralized Network Configuration) 50, and a DS-TT (Device-Side TSN Translator). 60, and a NW-TT (Network-Side TSN Translator) 70.
  • RAN Radio Access Network
  • DN Data Network
  • CNC Centralized Network Configuration
  • DS-TT Device-Side TSN Translator
  • 60 and a NW-TT (Network-Side TSN Translator) 70.
  • the core network 30 is a network including exchanges, subscriber information management devices, and the like.
  • the core network 30 includes network nodes that implement U-Plane functions and network nodes that implement C-Plane functions.
  • the U-Plane function is a function that executes transmission/reception processing of user data.
  • a network node that implements the U-Plane function is a UPF (User plane function) 380, for example.
  • the UPF 380 is a network node having functions such as a PDU (Protocol Data Unit) session point to the outside for interconnecting with the DN 40, packet routing and forwarding, and user plane QoS (Quality of Service) handling.
  • UPF 380 controls transmission and reception of data between DN 40 and terminal 20 .
  • UPF 380 and DN 40 may consist of one or more network slices.
  • UPF 380 may include NW-TT (Network-Side TSN Translator) 70 .
  • the C-Plane function group is a function group that executes a series of control processes for establishing communication, etc.
  • the network node group that realizes the C-Plane function group includes, for example, AMF (Access and Mobility Management Function) 310, UDM (Unified Data Management) 320, NEF (Network Exposure Function) 330, and NRF (Network Repository Function) 340, AUSF (Authentication Server Function) 350, PCF (Policy Control Function) 360, SMF (Session Management Function) 370, and TSN-AF (TSN 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
  • TSN-AF TSN Application Function
  • the RAN 10 is a network node that is communicably connected between the core network 30 and the terminal 20 and includes a base station, a line control device, and the like. RAN 10 is communicably connected to AMF 310 and UPF 380 . In addition, below, the base station 10 is also called RAN10.
  • the AMF 310 is a network node having functions such as RAN interface termination, NAS (Non-Access Stratum) termination, registration management, connection management, reachability management, and mobility management.
  • the NRF 340 is a network node that has a function of discovering NF (Network Function) instances that provide services.
  • UDM 320 is a network node that manages subscriber data and authentication data.
  • the UDM 320 includes a UDR (User Data Repository) 321 holding the data and an FE (Front End) 322 .
  • FE 322 processes subscriber information.
  • the SMF 370 is a network node having functions such as session management, IP (Internet Protocol) address allocation and management for the terminal 20, DHCP (Dynamic Host Configuration Protocol) function, ARP (Address Resolution Protocol) proxy, roaming function, and the like.
  • the NEF 330 is a network node having a function of notifying other NFs (Network Function) of capabilities and events.
  • the PCF 360 is a network node that has the function of performing network policy control.
  • the TSN-AF (TSN Application Function) 390 is a network node that has the function of controlling time-sensitive communication. TSN-AF 390 exchanges TSN bridge information with CNC 50 .
  • the DS-TT 60 is arranged at the edge on the terminal 20 side.
  • the NW-TT 70 is arranged at the edge on the network side.
  • the DS-TT 60 and NW-TT 70 serve as interfaces to the TSN network while providing transparency.
  • the TSN bridge information includes port management information and bridge management information.
  • the port management information is information related to Ethernet ports in DS-TT60 and NW-TT70.
  • Bridge management information is information related to NW-TT 70 .
  • communication is performed via the core network side N3 termination point 910 and the RAN side N3 termination point 920.
  • FIG. 3 is a sequence diagram showing an example of the flow of basic procedures for time-sensitive communication.
  • the TSN-AF 390 has a priori 5GS internal bridge delay values for each (Ethernet) traffic class.
  • the terminal 20 reports the delay value between the terminal 20 and the DS-TT 60 to the TSN-AF 390 (step S11).
  • the TSN-AF 390 calculates a bridge delay value by adding a previously held bridge delay value inside 5GS and a delay value between the terminal 20 and the DS-TT 60 (step S12).
  • the TSN-AF 390 then reports the calculated bridge delay value to the CNC 50 (step S13).
  • the CNC 50 generates scheduling information (eg gate opening/closing information) based on the bridge delay value (step S14).
  • the CNC 50 notifies the scheduling information to the TSN-AF 390 (step S15).
  • TSN-AF 390 transfers the received scheduling information to NW-TT 70 and DS-TT 60 (steps S16 and S17).
  • the TSN-AF 390 edits the received scheduling information to generate TSCAI (Time Sensitive Communication Assistance Information) (step S18) and transmits it to the RAN 10.
  • TSCAI Time Sensitive Communication Assistance Information
  • Example 1 In this embodiment, an example will be described in which a network node calculates a bridge delay value considering communication paths. This embodiment does not deal with the problem that the traffic becomes unstable during the terminal movement procedure.
  • FIG. 4 is a sequence diagram showing an example of the flow of network preparation procedures according to Example 1 of the embodiment of the present invention.
  • the TSN-AF 390 stores information indicating correspondence between traffic classes and DSCPs used in the transport IP layer.
  • the network preparation procedure does not depend on the terminal, and is executed when the network is built or at an appropriate time.
  • the TSN-AF 390 requests the PCF 360 to report the N3 link delay value (step S21).
  • the N3 link delay value is the delay value on the N3 link between core network 30 and RAN 10 . Specifically, it is the delay value in the route between the core network side N3 termination point 910 and the RAN side N3 termination point 920 .
  • the PCF 360 instructs the UPF 380 to measure the N3 link delay value via the SMF 370 (steps S22 and S23).
  • UPF 380 measures the delay of the N3 link (step S24) and reports the measurement result to PCF 360 via SMF 370 (steps S25 and S26).
  • the PCF 360 reports the delay value of the N3 link to the TSN-AF 390 for each DSCP ⁇ N3 link (step S27).
  • the TSN-AF 390 appropriately activates the above procedure and stores the delay value for each traffic class x N3 links.
  • the traffic class times the delay value for each N3 link means one delay value determined by selecting one traffic class and selecting one N3 link.
  • FIG. 5 is a sequence diagram showing an example of the flow of a bridge reporting procedure according to Example 1 of the embodiment of the present invention.
  • the bridge reporting procedure is terminal dependent and is performed when establishing a PDU session for the TSC.
  • the terminal 20 reports the delay value between the terminal 20 and the DS-TT 60 to the TSN-AF 390 (step S31).
  • the UPF 380 transmits the core network side N3 termination point information to the SMF 370 (step S32).
  • the core network side N3 termination point information is information for identifying the core network side N3 termination point 910, such as IP address, TEID (Tunnel Endpoint Identifier) of GTP-U (GPRS Tunneling Protocol User Plane), and the like.
  • the RAN 10 transmits the RAN side N3 termination point information to the SMF 370 (step S33).
  • the RAN-side N3 termination point information is information for identifying the RAN-side N3 termination point 920, and includes an IP address, GTP-U TEID, and the like.
  • the SMF 370 transmits the core network side N3 termination point information and the RAN side N3 termination point information to the TSN-AF 390 (step S34).
  • the N3 link is identified by the core network side N3 termination point information and the RAN side N3 termination point information.
  • the RAN 10 transmits RAN partial delay information to TSN-AF 390 via UPF 380 and SMF 370 (steps S35, S36, S37).
  • the RAN partial delay information is information indicating a delay value when passing through the RAN, and may be acquired by the QoS monitoring function.
  • TSN-AF 390 grasps the N3 link used by the TSC PDU session based on the core network side N3 termination point information and the RAN side N3 termination point information, and obtains the traffic class for the N3 link ⁇ the delay value for each N3 link. use.
  • the TSN-AF 390 calculates the delay value (x) for each traffic class ⁇ N3 link, the RAN partial delay value (y) based on the RAN partial delay information, and the delay value (z ), the bridge delay value (d) is calculated according to the following equation 1 (step S38).
  • the TSN-AF 390 reports the calculated bridge delay value to the CNC 50 (step S39).
  • the TSN-AF 390 updates the stored delay value for each traffic class ⁇ N3 links.
  • FIG. 6 is a sequence diagram showing an example of the flow of the bridge delay value update procedure according to Example 1 of the embodiment of the present invention.
  • the bridge delay value update procedure is performed in case of handover or Release with redirection due to terminal movement.
  • the RAN 10 transmits the RAN side N3 termination point information to the SMF 370 (step S41).
  • the destination RAN 10 notifies its own RAN side N3 termination point information during the handover procedure.
  • the newly accessed RAN 10 notifies its own RAN side N3 termination point information during the service request procedure.
  • the SMF 370 transmits a terminal movement notification including the RAN side N3 termination point information to the TSN-AF 390 via the PCF 360 (step S42).
  • the terminal movement notification is a notification indicating that the terminal 20 has moved to change the communication destination RAN 10 (or N3 link).
  • the TSN-AF 390 calculates the bridge delay value using the traffic class corresponding to the destination N3 link ⁇ the delay value for each N3 link (step S43) and reports it to the CNC 50 (step S44).
  • Every N3 link in this embodiment may be every combination of UPF 380 and RAN 10.
  • the bridge delay value is updated when the bridge delay value changes. This allows flexibility to accommodate varying bridge delay values.
  • Example 2 In the present embodiment, an example will be described in which traffic is stabilized by suppressing handover (connected mode movement control) during terminal movement.
  • FIG. 7 is a sequence diagram showing an example of the flow of terminal registration procedures according to Example 2 of the embodiment of the present invention.
  • the terminal registration procedure is terminal dependent and is performed in the procedure of registering the terminal with the network.
  • the AMF 310 transmits an Initial Context Setup Request to the RAN 10 (step S51).
  • the initial configuration request contains a Mobility Restriction List IE.
  • the Movement Restriction List IE contains the IE "Conditional Handover Suppression”. This IE has the values 'Always Suppress Handover' and 'Suppress Handover During TSC Establishment'.
  • FIG. 8 is a sequence diagram showing an example of the flow of the PDU session change procedure in the bridge setting procedure according to Example 2 of the embodiment of the present invention.
  • the PDU session change procedure is executed when a change of PDU session for TSC occurs.
  • the SMF 370 transmits a PDU session resource change request to the RAN 10 via the AMF 310 (step S61).
  • the PDU session resource change request includes (i) TSC Traffic Characteristics IE for the TSC QoS flow set here.
  • the TSC Traffic Characteristics IE contains the TSCAI.
  • the PDU session resource change request includes (ii) QoS Flow Level QoS Parameters IE.
  • the QoS flow level QoS parameters IE includes the GBR QoS flow information IE (GBR QoS Flow Information IE).
  • the IEs include the IE "TSC terminal movement schedule notification control (Notification control)”. This IE "TSC terminal movement schedule notification control" has a value of "notification requested”.
  • RAN 10 Upon receiving TSCAI, RAN 10 recognizes that handover cannot be activated for terminal 20 in question.
  • FIG. 9 is a sequence diagram showing an example of the flow of a terminal movement procedure according to Example 2 of the embodiment of the present invention.
  • the terminal 20 transmits a measurement report to the RAN 10 (step S71).
  • the RAN 10 determines whether handover should be performed based on the measurement report (step S72).
  • the RAN 10 determines that handover should be performed, if the value of the IE "conditional handover suppression" is "handover suppression during TSC setting", the following processing is performed if the TSC is being set, and if the TSC is not being set, , perform the handover procedure. Further, when the value of the IE "conditional handover suppression" is "always handover suppression", the RAN 10 performs the following processing regardless of whether the TSC is being set.
  • the RAN 10 may determine whether or not to perform the following process using a threshold different from that for terminal movement necessity determination.
  • the RAN 10 transmits to the SMF 370, via the AMF 310, a PDU session resource notification in which the value "true” is set in the IE "TSC terminal movement schedule notification reason" (step S73).
  • the SMF 370 transmits a terminal movement schedule notification to the TSN-AF 390 via the PCF 360 (step S74).
  • TSN-AF 390 instructs SMF 370 to release the TSC PDU session via PCF 360 (step S75).
  • the SMF 370 releases the TSC PDU session (step S76).
  • the RAN 10 may concurrently execute a Release with redirection procedure by idle mode mobility control. After that, the terminal 20 selects a new cell and re-establishes the TSC PDU session.
  • SMF 370 is an example of a first network node
  • TSN-AF 390 is an example of a second network node.
  • the RAN 10 notifies the TSN-AF 390 of the RAN 10 scheduled to be the handover destination or the RAN side N3 termination point information, and the TSN-AF 390 determines the delay situation assumed after the terminal moves, and notifies the RAN 10 of the determination result. Therefore, either the first embodiment or the second embodiment may be selected and executed.
  • the base stations 10, terminals 20 and various network nodes include functionality that implements the embodiments described above. However, the base station 10, terminal 20 and various network nodes may each have only part of the functions in the embodiments.
  • FIG. 10 is a diagram showing an example of the functional configuration of the base station 10.
  • the base station 10 has a transmitting section 110, a receiving section 120, a setting section 130, and a control section 140.
  • the functional configuration shown in FIG. 10 is merely an example. As long as the operation according to the embodiment of the present invention can be performed, the functional division and the names of the functional units may be arbitrary.
  • the network node may have a functional configuration similar to that of the base station 10.
  • FIG. a network node having multiple different functions on the system architecture may be composed of multiple network nodes separated for each function.
  • the transmission 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, higher layer information from the received signals.
  • the setting unit 130 stores preset setting information and various setting information to be transmitted to the terminal 20 in the storage device, and reads them from the storage device as necessary.
  • the contents of the setting information are, for example, settings related to communication using NTN.
  • the control unit 140 performs processing related to communication using NTN, as described in the embodiment. Also, the control unit 140 performs processing related to communication with the terminal 20 . In addition, the control unit 140 performs processing related to geographic position verification of the terminal 20 .
  • a functional unit related to signal transmission in control unit 140 may be included in transmitting unit 110 , and a functional unit related to signal reception in control unit 140 may be included in receiving unit 120 .
  • FIG. 11 is a diagram showing an example of the functional configuration of the terminal 20.
  • the terminal 20 has a transmitting section 210, a receiving section 220, a setting section 230, and a control section 240.
  • the functional configuration shown in FIG. 11 is merely an example. As long as the operation according to the embodiment of the present invention can be performed, the functional division and the names of the functional units may be arbitrary.
  • the USIM worn by the terminal 20 may have a transmitting section 210 , a receiving section 220 , a setting section 230 , and a control section 240 similarly to the terminal 20 .
  • the transmission unit 210 creates a transmission signal from the transmission data and wirelessly transmits the transmission signal.
  • the receiving unit 220 wirelessly receives various signals and acquires a higher layer signal from the received physical layer signal. Also, the receiving unit 220 has a function of receiving NR-PSS, NR-SSS, NR-PBCH, DL/UL control signals, reference signals, or the like transmitted from network nodes.
  • the setting unit 230 stores various types of setting information received from the network node by the receiving unit 220 in the storage device, and reads them from the storage device as necessary.
  • the setting unit 230 also stores preset setting information.
  • a network node, base station or core network according to the present embodiment may be configured as a network node, base station or core network shown in each section below. Also, the following communication method may be implemented.
  • (Section 2) a receiving unit that receives information from the core network indicating that handover is to be suppressed in time-sensitive communication in a procedure for registering a terminal; a transmission unit configured to transmit information indicating that the terminal is scheduled to move to change a communication destination wireless communication network to the core network based on the information indicating that handover is to be suppressed in the time-sensitive communication; a control unit that suppresses handover based on information indicating that handover is suppressed in the time-sensitive communication; base station.
  • the first network node is a receiving unit for receiving information indicating that the terminal is scheduled to move to change the wireless communication network with which it communicates; a transmitting unit configured to transmit a terminal movement schedule notification indicating that the terminal is scheduled to move to the second network node based on the received information;
  • the second network node is a receiving unit that receives the terminal movement schedule notification from the first network node; a transmitter that instructs the first network node to release a PDU session for time-sensitive communication based on the terminal movement schedule notification; core network.
  • (Section 4) receiving a terminal move schedule notification indicating that the terminal is scheduled to move to change the wireless communication network with which it communicates; instructing another network node to release a PDU session for time-sensitive communication based on the terminal movement schedule notification; The method of communication performed by network nodes.
  • (Section 5) a step of receiving information from the core network indicating suppression of handover in time-sensitive communication in the procedure for registering the terminal; transmitting to the core network information indicating that the terminal is scheduled to move to change the wireless communication network of the communication destination based on the information indicating that handover is to be suppressed in the time-sensitive communication; suppressing handover based on information indicating that handover is to be suppressed in the time-sensitive communication;
  • any of the above configurations provides a technology that enables time-sensitive communication in a wireless communication system to flexibly respond to changes in bridge delay values. According to the second term, handover can be suppressed in time-sensitive communication.
  • each functional block may be implemented using one device physically or logically coupled, or directly or indirectly using two or more physically or logically separated devices (e.g. , wired, wireless, etc.) and may be implemented using these multiple devices.
  • a functional block may be implemented by combining software in the one device or the plurality of devices.
  • Functions include judging, determining, determining, calculating, calculating, processing, deriving, examining, searching, checking, receiving, transmitting, outputting, accessing, resolving, selecting, choosing, establishing, comparing, assuming, expecting, assuming, Broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, assigning, etc.
  • a functional block (component) that performs transmission is called a transmitting unit or transmitter. In either case, as described above, the implementation method is not particularly limited.
  • the network node, the terminal 20, etc. may function as a computer that performs the processing of the wireless communication method of the present disclosure.
  • FIG. 12 is a diagram illustrating an example of hardware configurations of the base station 10 and the terminal 20 according to an embodiment of the present disclosure.
  • a network node may have a hardware configuration similar to that of the base station 10 .
  • USIM may have the same hardware configuration as 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, and the like. good too.
  • the term "apparatus” can be read as a circuit, device, unit, or the like.
  • the hardware configuration of the base station 10 and terminal 20 may be configured to include one or more of each device shown in the figure, or may be configured without some devices.
  • Each function of the base station 10 and the terminal 20 is performed by the processor 1001 performing calculations and controlling communication by the communication device 1004 by loading predetermined software (programs) onto hardware such as the processor 1001 and the storage device 1002. or by controlling at least one of data reading and writing in the storage device 1002 and the auxiliary storage device 1003 .
  • the processor 1001 for example, operates an operating system and controls 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 device, registers, and the like.
  • CPU central processing unit
  • the control unit 140 , the control unit 240 and the like described above 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 according to them.
  • 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.
  • control unit 140 of base station 10 shown in FIG. 10 may be implemented by a control program stored in storage device 1002 and operated by processor 1001 .
  • the control unit 240 of the terminal 20 shown in FIG. 11 may be implemented by a control program stored in the storage device 1002 and operated by the processor 1001.
  • FIG. Processor 1001 may be implemented by one or more chips. Note that the program may be transmitted from a network via an electric communication line.
  • the storage device 1002 is a computer-readable recording medium, for example, 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 also be called a register, cache, main memory (main storage device), or the like.
  • the storage device 1002 can store executable programs (program code), software modules, etc. for implementing the communication method according to an embodiment of the present disclosure.
  • the auxiliary storage device 1003 is a computer-readable recording medium, for example, 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), smart card, flash memory (eg, card, stick, key drive), floppy disk, magnetic strip, and/or the like.
  • the storage medium described above may be, for example, a database, server, or other suitable medium including at least one of storage device 1002 and secondary 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 called a network device, a network controller, a network card, a communication module, or the like.
  • the communication device 1004 includes 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).
  • FDD frequency division duplex
  • TDD time division duplex
  • the transceiver may be physically or logically separate implementations for the transmitter and receiver.
  • the input device 1005 is an input device (for example, keyboard, mouse, microphone, switch, button, sensor, etc.) that receives input from the outside.
  • the output device 1006 is an output device (for example, display, speaker, LED lamp, etc.) that outputs to the outside. Note that the input device 1005 and the output device 1006 may be integrated (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 between devices.
  • the base station 10 and the terminal 20 include hardware such as microprocessors, digital signal processors (DSPs), ASICs (Application Specific Integrated Circuits), PLDs (Programmable Logic Devices), and FPGAs (Field Programmable Gate Arrays). , and part or all of each functional block may be implemented by the hardware.
  • processor 1001 may be implemented using at least one of these pieces of hardware.
  • a 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, and various sensors 2021-2029. , an information service unit 2012 and a communication module 2013 .
  • Each aspect/embodiment described in the present disclosure may be applied to a communication device mounted on vehicle 2001, and may be applied to communication module 2013, for example.
  • the driving unit 2002 is configured by, for example, an engine, a motor, or a hybrid of the engine and the motor.
  • the steering unit 2003 includes at least a steering wheel (also referred to as 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 , a memory (ROM, RAM) 2032 and a 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).
  • the signals from the various sensors 2021 to 2029 include the current signal from the current sensor 2021 that senses the current of the motor, the rotation speed signal of the front and rear wheels acquired by the rotation speed sensor 2022, and the front wheel acquired by the air pressure sensor 2023. and rear wheel air pressure signal, vehicle speed signal obtained by vehicle speed sensor 2024, acceleration signal obtained by acceleration sensor 2025, accelerator pedal depression amount signal obtained by accelerator pedal sensor 2029, brake pedal sensor 2026 obtained by There are a brake pedal depression amount signal, a shift lever operation signal acquired by the shift lever sensor 2027, and a detection signal for detecting obstacles, vehicles, pedestrians, etc. acquired by the object detection sensor 2028, and the like.
  • the information service unit 2012 includes various devices such as car navigation systems, audio systems, speakers, televisions, and radios for providing various types of information such as driving information, traffic information, and entertainment information, and one or more devices for controlling these devices. ECU.
  • the information service unit 2012 uses information acquired from an external device via the communication module 2013 or the like to provide passengers of the vehicle 2001 with various multimedia information and multimedia services.
  • Driving support system unit 2030 includes millimeter wave radar, LiDAR (Light Detection and Ranging), camera, positioning locator (e.g., GNSS, etc.), map information (e.g., high-definition (HD) map, automatic driving vehicle (AV) map, etc. ), gyro systems (e.g., IMU (Inertial Measurement Unit), INS (Inertial Navigation System), etc.), AI (Artificial Intelligence) chips, AI processors, etc., to prevent accidents and reduce the driver's driving load. and one or more ECUs for controlling these devices.
  • 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.
  • the communication module 2013 can communicate with the microprocessor 2031 and components of the vehicle 2001 via communication ports.
  • the communication module 2013 communicates with the vehicle 2001 through the communication port 2033, the drive unit 2002, the steering unit 2003, the accelerator pedal 2004, the brake pedal 2005, the shift lever 2006, the front wheels 2007, the rear wheels 2008, the axle 2009, the electronic Data is transmitted and received between the microprocessor 2031 and memory (ROM, RAM) 2032 in the control unit 2010 and the sensors 2021-29.
  • 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 an external device via wireless communication.
  • Communication module 2013 may be internal or external to electronic control unit 2010 .
  • the external device may be, for example, a base station, a mobile station, or the like.
  • 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 receives the rotation speed signal of the front and rear wheels obtained by the rotation speed sensor 2022, the air pressure signal of the front and rear wheels obtained by the air pressure sensor 2023, and the 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, and a shift lever.
  • a shift lever operation signal obtained by the sensor 2027 and a detection signal for detecting obstacles, vehicles, pedestrians, etc. obtained by the object detection sensor 2028 are also transmitted to an external device via wireless communication.
  • the communication module 2013 receives various information (traffic information, signal information, inter-vehicle information, etc.) transmitted from external devices, and displays it on the information service unit 2012 provided in the vehicle 2001 .
  • Communication module 2013 also stores various information received from external devices in memory 2032 available to microprocessor 2031 .
  • the microprocessor 2031 controls the drive unit 2002, the steering unit 2003, the accelerator pedal 2004, the brake pedal 2005, the shift lever 2006, the front wheels 2007, the rear wheels 2008, and the axle 2009 provided in the vehicle 2001.
  • sensors 2021 to 2029 and the like may be controlled.
  • the operations of a plurality of functional units may be physically performed by one component, or the operations of one functional unit may be physically performed by a plurality of components.
  • the processing order 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 explanation of processing, such devices may be implemented in hardware, software, or a combination thereof.
  • the software operated by the processor of the base station 10 according to the embodiment of the present invention and the software operated by the processor of the terminal 20 according to the embodiment of the present invention are stored in random access memory (RAM), flash memory, read-only memory, respectively. (ROM), EPROM, EEPROM, register, hard disk (HDD), removable disk, CD-ROM, database, server, or any other appropriate storage medium.
  • 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 physical layer signaling (e.g., DCI (Downlink Control Information), UCI (Uplink Control Information)), higher 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.
  • the RRC signaling may also be called an RRC message, such as an RRC Connection Setup message, an RRC Connection Reconfiguration message, or the like.
  • Each aspect/embodiment described in the present disclosure includes 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, for example, an integer, a decimal number)), 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 .16 (WiMAX (registered trademark)), IEEE 802.20, UWB (Ultra-WideBand), Bluetooth (registered trademark), and other suitable systems, and any extensions, modifications, creations, and provisions based on these systems. It may be applied to
  • a specific operation performed by the base station 10 in this specification may be performed by its upper node in some cases.
  • various operations performed for communication with terminal 20 may be performed by base station 10 and other network nodes other than base station 10 ( (eg, but not limited to MME or S-GW).
  • base station 10 e.g, but not limited to MME or S-GW
  • other network nodes e.g, but not limited to MME or S-GW.
  • the other network node may be a combination of a plurality of other network nodes (eg, MME and S-GW).
  • Information, signals, etc. described in the present disclosure may be output from a higher layer (or a lower layer) to a lower layer (or a higher layer). It may be input and output via multiple network nodes.
  • Input/output information may be stored in a specific location (for example, memory) or managed using a management table. Input/output information and the like can be overwritten, updated, or appended. The output information and the like may be deleted. The entered information and the like may be transmitted to another device.
  • the determination in the present disclosure may be performed by a value represented by 1 bit (0 or 1), may be performed by a boolean value (Boolean: true or false), or may be performed by comparing numerical values (e.g. , comparison with a predetermined value).
  • Software whether referred to as software, firmware, middleware, microcode, hardware description language or otherwise, includes instructions, instruction sets, code, code segments, program code, programs, subprograms, and software modules. , applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, functions, and the like.
  • software, instructions, information, etc. may be transmitted and received via a transmission medium.
  • the software uses at least one of wired technology (coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), etc.) and wireless technology (infrared, microwave, etc.) to website, Wired and/or wireless technologies are included within the definition of transmission medium when sent from a server or other remote source.
  • 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. may refer to voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any of these. may be represented by a combination of
  • the channel and/or symbols may be signaling.
  • a signal may also be a message.
  • a component carrier may also be called a carrier frequency, a cell, a frequency carrier, or the like.
  • system and “network” used in this disclosure are used interchangeably.
  • information, parameters, etc. described in the present disclosure may be expressed using absolute values, may be expressed using relative values from a predetermined value, or may be expressed using other corresponding information.
  • radio resources may be indexed.
  • base station BS
  • radio base station base station
  • base station fixed station
  • NodeB nodeB
  • eNodeB eNodeB
  • gNodeB gNodeB
  • a base station can accommodate one or more (eg, three) cells.
  • the overall coverage area of the base station can be partitioned into multiple smaller areas, each smaller area being associated with a base station subsystem (e.g., an indoor small base station (RRH: Communication services can also be provided by Remote Radio Head)).
  • RRH indoor small base station
  • the terms "cell” or “sector” refer to part or all of the coverage area of at least one of the base stations and base station subsystems that serve communication within such coverage.
  • MS Mobile Station
  • UE User Equipment
  • a mobile station is defined by those skilled in the art as 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 called a terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable term.
  • At least one of the base station and mobile station may be called a transmitting device, a receiving device, a communication device, or the like.
  • At least one of the base station and the mobile station may be a device mounted on a mobile object, the mobile object itself, or the like.
  • the mobile object may be a vehicle (e.g., car, airplane, etc.), an unmanned mobile object (e.g., drone, self-driving car, etc.), or a robot (manned or unmanned ).
  • at least one of the base station and the mobile station includes devices that do not necessarily move during communication operations.
  • at least one of the base station and 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.
  • communication between a base station and a user terminal is replaced with communication between a plurality of terminals 20 (for example, D2D (Device-to-Device), V2X (Vehicle-to-Everything), etc.)
  • the terminal 20 may have the functions of the base station 10 described above.
  • 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 read as side channels.
  • user terminals in the present disclosure may be read as base stations.
  • the base station may have the functions that the above-described user terminal has.
  • determining and “determining” used in this disclosure may encompass a wide variety of actions.
  • “Judgement” and “determination” are, for example, judging, calculating, computing, processing, deriving, investigating, looking up, searching, inquiring (eg, lookup in a table, database, or other data structure);
  • "judgment” and “determination” are used for receiving (e.g., receiving information), transmitting (e.g., transmitting information), input, output, access (accessing) (for example, accessing data in memory) may include deeming that a "judgment” or “decision” has been made.
  • judgment and “decision” are considered to be “judgment” and “decision” by resolving, selecting, choosing, establishing, comparing, etc. can contain.
  • judgment and “decision” may include considering that some action is “judgment” and “decision”.
  • judgment (decision) may be read as “assuming”, “expecting”, “considering”, or the like.
  • connection means any direct or indirect connection or coupling between two or more elements, It can include the presence of one or more intermediate elements between two elements being “connected” or “coupled.” Couplings or connections between elements may be physical, logical, or a combination thereof. For example, “connection” may be read as "access”.
  • two elements are defined using at least one of one or more wires, cables, and printed electrical connections and, as some non-limiting and non-exhaustive examples, in the radio frequency domain. , electromagnetic energy having wavelengths in the microwave and optical (both visible and invisible) regions, and the like.
  • the reference signal can also be abbreviated as RS (Reference Signal), and may also be called Pilot depending on the applicable standard.
  • RS Reference Signal
  • any reference to elements using the "first,” “second,” etc. designations 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, reference to a first and second element does not imply that only two elements can be employed or that the first element must precede the second element in any way.
  • a radio frame may consist of one or more frames in the time domain. Each frame or frames in the time domain may be referred to as a subframe. A subframe may also consist of one or more slots in the time domain. A subframe may be of a fixed length of time (eg, 1 ms) independent of numerology.
  • a numerology may be a communication parameter that applies to the transmission and/or reception of a signal or channel. Numerology, for example, subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame configuration, transceiver It may indicate at least one of certain filtering operations performed in the frequency domain, certain windowing operations performed by the transceiver in the time domain, and/or the like.
  • SCS subcarrier spacing
  • TTI transmission time interval
  • transceiver It may indicate at least one of certain filtering operations performed in the frequency domain, certain windowing operations performed by the transceiver in the time domain, and/or the like.
  • a slot may consist of one or more symbols (OFDM (Orthogonal Frequency Division Multiplexing) symbol, SC-FDMA (Single Carrier Frequency Division Multiple Access) symbol, etc.) in the time domain.
  • a slot may be a unit of time based on numerology.
  • a slot may contain multiple mini-slots. Each minislot may consist of one or more symbols in the time domain. A minislot may also be referred to as a subslot. A minislot may consist 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. Radio frames, subframes, slots, minislots and symbols may be referred to by other corresponding designations.
  • one subframe may be called a Transmission Time Interval (TTI)
  • TTI Transmission Time Interval
  • TTI Transmission Time Interval
  • TTI Transmission Time Interval
  • one slot or one minislot may be called a TTI.
  • TTI Transmission Time Interval
  • at least one of the subframe and TTI may be a subframe (1 ms) in existing LTE, a period shorter than 1 ms (eg, 1-13 symbols), or a period longer than 1 ms may be Note that the unit representing the TTI may be called a slot, mini-slot, or the like instead of a subframe.
  • TTI refers to, for example, the minimum scheduling time unit in wireless communication.
  • the 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.
  • a TTI may be a transmission time unit such as a channel-encoded data packet (transport block), code block, or codeword, or may be a processing unit such as scheduling and link adaptation. Note that when a TTI is given, the time interval (for example, the number of symbols) in which transport blocks, code blocks, codewords, etc. are actually mapped may be shorter than the TTI.
  • one or more TTIs may be the minimum scheduling time unit. Also, the number of slots (the number of mini-slots) constituting the minimum time unit of the scheduling may be controlled.
  • a TTI having a time length of 1 ms may be called a normal TTI (TTI in LTE Rel. 8-12), normal TTI, long TTI, normal subframe, normal subframe, long subframe, slot, or the like.
  • a TTI that is shorter than a normal TTI may be called a shortened TTI, a short TTI, a partial or fractional TTI, a shortened subframe, a short subframe, a minislot, a subslot, a slot, and the like.
  • the long TTI (e.g., normal TTI, subframe, etc.) may be replaced with a TTI having a time length exceeding 1 ms
  • the short TTI e.g., shortened TTI, etc.
  • a TTI having the above TTI length may be read instead.
  • a resource block is a resource allocation unit in the time domain and the frequency domain, and may include one or more consecutive subcarriers in the frequency domain.
  • the number of subcarriers included in the 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 numerology.
  • the time domain of an RB may include one or more symbols and may be 1 slot, 1 minislot, 1 subframe, or 1 TTI long.
  • One TTI, one subframe, etc. may each consist of one or more resource blocks.
  • One or more RBs are 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 composed of one or more resource elements (RE: Resource Element).
  • RE Resource Element
  • 1 RE may be a radio resource region of 1 subcarrier and 1 symbol.
  • a bandwidth part (which may also be called a bandwidth part) may represent a subset of contiguous common resource blocks (RBs) for a certain numerology on a certain carrier.
  • the common RB may be identified by an RB index based on the common reference point of the carrier.
  • PRBs may be defined in a BWP and numbered within that BWP.
  • the BWP may include a BWP for UL (UL BWP) and a BWP for DL (DL BWP).
  • UL BWP UL BWP
  • DL BWP DL BWP
  • One or more BWPs may be configured for terminal 20 within one carrier.
  • At least one of the configured BWPs may be active, and terminal 20 may not expect to transmit or receive a given signal/channel outside the active BWP.
  • terminal 20 may not expect to transmit or receive a given signal/channel outside the active BWP.
  • “cell”, “carrier”, etc. in the present disclosure may be read as "BWP”.
  • radio frames, subframes, slots, minislots and symbols are only examples.
  • the number of subframes contained in a radio frame the number of slots per subframe or radio frame, the number of minislots contained within a slot, the number of symbols and RBs contained in a slot or minislot, the number of Configurations such as the number of subcarriers, the number of symbols in a TTI, the symbol length, the cyclic prefix (CP) length, etc.
  • CP cyclic prefix
  • a and B are different may mean “A and B are different from each other.”
  • the term may also mean that "A and B are different from C”.
  • Terms such as “separate,” “coupled,” etc. may also be interpreted in the same manner as “different.”
  • notification of predetermined information is not limited to being performed explicitly, but may be performed implicitly (for example, not notifying the predetermined information). good too.
  • base station (RAN) 110 transmitting unit 120 receiving unit 130 setting unit 140 control unit 20 terminal 30 core network 40 DN 50 CNC 60 DS-TT 70 NW-TT 210 transmission unit 220 reception unit 230 setting unit 240 control unit 310 AMF 320UDM 330NEF 340NRF 350 AUSF 360 PCF 370 SMF 380 UPF 390 TSN-AF 1001 Processor 1002 Storage device 1003 Auxiliary storage device 1004 Communication device 1005 Input device 1006 Output device 2001 Vehicle 2002 Driving unit 2003 Steering unit 2004 Accelerator pedal 2005 Brake pedal 2006 Shift lever 2007 Front wheel 2008 Rear wheel 2009 Axle 2010 Electronic control unit 2012 Information service unit 2013 Communication module 2021 Current sensor 2022 Revolution sensor 2023 Air pressure sensor 2024 Vehicle speed sensor 2025 Acceleration sensor 2026 Brake pedal sensor 2027 Shift lever sensor 2028 Object detection sensor 2029 Accelerator pedal sensor 2030 Driving support system unit 2031 Microprocessor 2032 Memory (ROM, RAM) 2033 communication port (IO port)

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  • Computer Networks & Wireless Communication (AREA)
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Abstract

L'invention concerne un noeud de réseau comprenant: une unité de réception qui reçoit une notification d'ordonnancement de mouvement de terminal indiquant qu'un terminal est programmé pour un mouvement qui modifie le réseau de communication sans fil de la destination de communication; et une unité de transmission qui ordonne à un autre noeud de réseau, sur la base de la notification de programmation de déplacement de terminal, de libérer la session d'unité de paquets de données (PDU) pour une communication urgente.
PCT/JP2022/003457 2022-01-28 2022-01-28 Noeud de réseau, station de base, réseau central et procédé de communication WO2023145032A1 (fr)

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PCT/JP2022/003457 WO2023145032A1 (fr) 2022-01-28 2022-01-28 Noeud de réseau, station de base, réseau central et procédé de communication

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021106769A1 (fr) * 2019-11-26 2021-06-03 三菱電機株式会社 Système de communication, station de base et terminal de communication

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021106769A1 (fr) * 2019-11-26 2021-06-03 三菱電機株式会社 Système de communication, station de base et terminal de communication

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"3rd Generation Partnership Project; Technical Specification Group Services and System Aspects; Procedures for the 5G System (5GS); Stage 2 (Release 17)", 3GPP STANDARD; 3GPP TS 23.502, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. SA WG2, no. V17.3.0, 23 December 2021 (2021-12-23), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, pages 1 - 727, XP052083265 *

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