WO2023218509A1 - ネットワークノード、無線通信システム及び通信方法 - Google Patents
ネットワークノード、無線通信システム及び通信方法 Download PDFInfo
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- WO2023218509A1 WO2023218509A1 PCT/JP2022/019731 JP2022019731W WO2023218509A1 WO 2023218509 A1 WO2023218509 A1 WO 2023218509A1 JP 2022019731 W JP2022019731 W JP 2022019731W WO 2023218509 A1 WO2023218509 A1 WO 2023218509A1
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- terminal
- network node
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/18—Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
- H04W8/186—Processing of subscriber group data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0069—Transmission or use of information for re-establishing the radio link in case of dual connectivity, e.g. decoupled uplink/downlink
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
- H04W60/04—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration using triggered events
Definitions
- the present invention relates to a network node in a wireless communication system, a wireless communication system, and a communication method.
- NR New Radio
- 5G New Radio
- EPC Evolved Packet Core
- the network architecture includes 5GC (5G Core Network) and NG-RAN (Next Generation - Radio Access Network), which corresponds to E-UTRAN (Evolved Universal Terrestrial Radio Access Network), which is RAN (Radio Access Network) in LTE network architecture.
- 5GC 5G Core Network
- NG-RAN Next Generation - Radio Access Network
- E-UTRAN Evolved Universal Terrestrial Radio Access Network
- RAN Radio Access Network
- NR is considering a mechanism to improve the reliability of 5G network communications.
- communication is specified in which routes are duplicated between a terminal and a RAN and between a RAN and a UPF (User Plane Function).
- UPF User Plane Function
- the present invention has been made in view of the above points, and an object of the present invention is to realize communication redundancy in a wireless communication system.
- a receiving unit that receives a registration request for a terminal and registration information of a network node that controls registration of a terminal belonging to a group including the terminal are acquired, and based on the registration information, the a control unit that determines whether a master node passed through in a registration request is a master node different from other terminals belonging to the group;
- a network node comprising a transmitter for transmitting a registration request including an identifier identifying a master node to a network node managing subscribers of the terminal.
- a technology that makes it possible to realize communication redundancy in a wireless communication system.
- FIG. 1 is a diagram for explaining a wireless communication system according to an embodiment of the present invention.
- 1 is a diagram showing an example of a configuration of a wireless communication system according to an embodiment of the present invention.
- FIG. 2 is a sequence diagram illustrating an example of the flow of a terminal registration procedure according to an embodiment of the present invention.
- FIG. 2 is a sequence diagram showing an example of the flow of an event notification procedure according to an embodiment of the present invention.
- FIG. 2 is a sequence diagram showing an example of the flow of a handover procedure according to an embodiment of the present invention.
- 1 is a diagram showing an example of a functional configuration of a base station according to an embodiment of the present invention.
- 1 is a diagram illustrating an example of a functional configuration of a terminal according to an embodiment of the present invention.
- FIG. 1 is a diagram showing an example of the hardware configuration of a base station or a terminal according to an embodiment of the present invention.
- 1 is a diagram showing an example of the configuration of a vehicle
- LTE Long Term Evolution
- NR NR-Advanced
- SS Synchronization signal
- PSS Primary SS
- SSS Secondary SS
- PBCH Physical broadcast channel
- PRACH Physical Terms such as random access channel
- PDCCH Physical Downlink Control Channel
- PDSCH Physical Downlink Shared Channel
- PUCCH Physical Uplink Control Channel
- PUSCH Physical Uplink Shared Channel
- the duplex method may be a TDD (Time Division Duplex) method, an FDD (Frequency Division Duplex) method, or another method (for example, Flexible Duplex, etc.). This method may also be used.
- “configuring" wireless parameters etc. may mean pre-configuring predetermined values, or It may also be possible to set wireless parameters notified from.
- FIG. 1 is a diagram for explaining a wireless communication system according to an embodiment of the present invention.
- the wireless communication system according to the embodiment of the present invention includes a base station 10 and a terminal 20, as shown in FIG. Although one base station 10 and one terminal 20 are shown in FIG. 1, this is just an example, and there may be a plurality of each.
- the base station 10 is a communication device that provides one or more cells and performs wireless communication with the terminal 20.
- the physical resources of a radio signal are defined in the time domain and the frequency domain, and the time domain may be defined by the number of OFDM (Orthogonal Frequency Division Multiplexing) symbols, and the frequency domain may be defined by the number of subcarriers or resource blocks. Good too.
- a TTI Transmission Time Interval
- a TTI Transmission Time Interval
- the base station 10 transmits a synchronization signal and system information to the terminal 20.
- the synchronization signals are, for example, NR-PSS and NR-SSS.
- System information is transmitted, for example, on NR-PBCH, and is also referred to as broadcast information.
- the synchronization signal and system information may be called SSB (SS/PBCH block).
- the base station 10 transmits a control signal or data to the terminal 20 on the DL (Downlink), and receives the control signal or data from the terminal 20 on the UL (Uplink).
- Both the base station 10 and the terminal 20 can perform beamforming to transmit and receive signals. Further, both the base station 10 and the terminal 20 can apply MIMO (Multiple Input Multiple Output) communication to DL or UL.
- MIMO Multiple Input Multiple Output
- both the base station 10 and the terminal 20 may communicate via a secondary cell (SCell) and a primary cell (PCell) using CA (Carrier Aggregation). Furthermore, the terminal 20 may communicate via a primary cell of the base station 10 and a primary SCG cell (PSCell) of another base station 10 using DC (Dual Connectivity).
- SCell secondary cell
- PCell primary cell
- DC Direct Connectivity
- the terminal 20 is a communication device equipped with a wireless communication function, such as a smartphone, a mobile phone, a tablet, a wearable terminal, or a communication module for M2M (Machine-to-Machine). As shown in FIG. 1, the terminal 20 receives control signals or data from the base station 10 via DL, and transmits control signals or data to the base station 10 via UL, thereby receiving various types of information provided by the wireless communication system. Use communication services. Furthermore, the terminal 20 receives various reference signals transmitted from the base station 10, and measures the channel quality based on the reception results of the reference signals. Note that the terminal 20 may be called a UE, and the base station 10 may be called a gNB.
- FIG. 2 is a diagram illustrating an example of the configuration of a wireless communication system according to an embodiment of the present invention.
- the wireless communication system includes a RAN 10, a plurality of terminals (first UE 20-1, second UE 20-2, third UE 20-3, etc.), a core network 30, and a DN (Data Network) 40. Be prepared.
- the RAN 10 may be a device including a base station when dual connectivity (DC) is performed.
- the RAN 10 includes a MN and an SN (Secondary Node).
- the conventional RAN 10 includes one MN
- the RAN 10 according to the present embodiment includes a plurality of MNs (first MN 11-1, second MN 11-2, third MN 11-1, etc.) for redundancy. -3 etc.).
- the core network 30 is a network that includes an exchange, a subscriber information management device, and the like.
- the core network 30 includes a network node that implements a U-Plane function and a network node group that implements a C-Plane function group.
- the U-Plane function is a function that executes user data transmission and reception processing.
- a network node that realizes the U-Plane function is, for example, a UPF (User plane function) 380.
- the UPF 380 is a network node that has functions such as a PDU (Protocol Data Unit) session point to the outside for interconnection with the DN 40, packet routing and forwarding, and user plane QoS (Quality of Service) handling.
- the UPF 380 controls data transmission and reception between the DN 40 and the 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 function group that executes a series of control processes for establishing communication and the like.
- the network nodes that realize the C-Plane function group include, for example, AMF (Access and Mobility Management Function), UDM (Unified Data Management) 320, NEF (Network Exposure Function) 330, and NRF (Network Repository Function) 340. , an Authentication Server Function (AUSF) 350, a Policy Control Function (PCF) 360, a Session Management Function (SMF) 370, and an Application Function (AF) 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
- the AMF is a network node that has functions such as RAN interface termination, NAS (Non-Access Stratum) termination, registration management, connection management, reachability management, and mobility management.
- NAS Non-Access Stratum
- the core network 30 according to the present embodiment includes a plurality of AMFs (first AMF 310-1, second AMF 310-2) for redundancy. , third AMF310-3, etc.).
- the NRF 340 is a network node that has a function of discovering an NF (Network Function) instance that provides a service.
- UDM 320 is a network node that manages subscriber data and authentication data.
- the UDM 320 includes a UDR (User Data Repository) 321 that holds the data, and a FE (Front End) 322.
- FE 322 processes subscriber information.
- the SMF370 has functions such as session management, IP (Internet Protocol) address assignment and management for UE-CP20-1 or UE-UP20-2, DHCP (Dynamic Host Configuration Protocol) function, ARP (Address Resolution Protocol) proxy, and roaming function.
- IP Internet Protocol
- DHCP Dynamic Host Configuration Protocol
- ARP Address Resolution Protocol
- roaming function is a network node with The NEF 330 is a network node that has a function of notifying other NFs (Network Functions) of capabilities and events.
- the PCF 360 is a network node that has a function of controlling network policy.
- An AF (Application Function) 390 is a network node that has a function of controlling an application server.
- the first AMF310-1 and the first MN11-1, the second AMF310-2 and the second MN11-2, and the third AMF310-3 and the third MN11-3 can each communicate as an N2 link. It is connected to the. Further, the UPF 380 and the first MN 11-1, the second MN 11-2, and the third MN 11-3 are each communicably connected as an N3 link. The UPF 380 and the SMF 370 are communicably connected as an N4 link. The UPF 380 and the DN 40 are communicably connected as an N6 link.
- the first UE 20-1, the second UE 20-2, and the third UE 20-3 are examples of terminals belonging to the same group. These terminals are given, for example, the same internal group ID for redundant communication. These terminals are connected to different MNs through a registration procedure described later. For example, the first UE 20-1 is connected to the first MN 11-1, the second UE 20-2 is connected to the second MN 11-2, and the third UE 20-3 is connected to the third MN 11-1. -3 is connected.
- the MN's "Global RAN Node ID" can be set in the AMF registration information for the UDM 320.
- the "Global RAN Node ID" is allocated to identify the MN, and functions as an identifier of the MN.
- a specified terminal accommodation AMF registration event disclosure service is defined in the UDM 320.
- the designated terminal accommodation AMF registration event disclosure service is a service that discloses the occurrence of an AMF registration event when a designated terminal is accommodated.
- the UDM 320 When the AMF subscribes to the specified terminal accommodation AMF registration event disclosure service, when the AMF in which the specified terminal is accommodated is registered in the UDM 320, the UDM 320 will send a notification to that effect (designated terminal accommodation AMF registration event notification). Send to subscribed AMF.
- FIG. 3 is a sequence diagram showing an example of the flow of the terminal registration procedure according to the embodiment of the present invention.
- the first UE 20-1 transmits a registration request including the internal group ID to the first AMF 310-1 via the first MN 11-1 (step S101).
- the first AMF 310-1 recognizes the "Global RAN Node ID" of the via MN (first MN 11-1) by the N2 link interface used. Then, the first AMF 310-1 specifies the internal group ID and transmits a request for the terminal ID belonging to the group to the UDM 320 (step S102).
- the UDM 320 transmits a response indicating the terminal ID belonging to the group to the first AMF 310-1 (step S103).
- the first AMF 310-1 specifies the terminal ID and transmits a request for registration information of the AMF that accommodates each terminal to the UDM 320 (step S104).
- the UDM 320 transmits a response indicating the registration information of the AMF that accommodates each terminal to the first AMF 310-1 (step S105).
- the first AMF 310-1 determines whether the "Global RAN Node ID" in one AMF registration information is the same as the transit MN.
- the first AMF 310-1 When the first AMF 310-1 determines that the "Global RAN Node ID" in one AMF registration information is the same as the transit MN, the first AMF 310-1 issues a UE Context Release Command to the first MN 11-1. (Step S106).
- the first MN 11-1 transmits an RRC release instruction (RRC Release) including information encouraging cell reselection to another MN to the first UE 20-1 (step S107).
- the first UE 20-1 reselects another MN (step S108) and returns to the process of step S101.
- the first AMF 310-1 determines that the "Global RAN Node ID" in all AMF registration information is not the same as the transit MN. If the first AMF 310-1 determines that the AMF-NF instance ID in one AMF registration information indicates itself. In this case, another AMF is selected as the "Target AMF" and an AMF reallocation procedure is executed (step S109).
- the AMF reassignment procedure is a procedure disclosed in Non-Patent Document 2, and is a procedure for reassigning from "Initial AMF" to "Target AMF".
- the first AMF 310-1 may notify other AMFs of AMF registration information for AMFs that are not subscribed to the specified terminal accommodating AMF registration event disclosure service.
- the first AMF 310-1 skips the procedure of step S109.
- the first AMF 310-1 registers the first MN 11-1 including its "Global RAN Node ID" (step S110).
- the first AMF 310-1 transmits a request to subscribe to the AMF registration event disclosure service accommodating the specified terminal to the UDM 320 (step S111).
- the first AMF 310-1 makes a subscription request to the designated terminal accommodating AMF registration event disclosure service, with a terminal belonging to the same internal group as the accommodating terminal as the designated terminal.
- the registration procedure for the first UE 20-1 is completed.
- the second UE 20-2 and third UE 20-3 also perform similar registration procedures. Thereby, different MNs and different AMFs accommodate the first UE 20-1, the second UE 20-2, and the third UE 20-3.
- FIG. 4 is a sequence diagram showing an example of the flow of an event notification procedure according to an embodiment of the present invention.
- the UDM 320 registers the AMF accommodating the specified terminal at that time (for example, the first AMF 310 -1), a designated terminal accommodating AMF registration event notification is sent to (step S201).
- the AMF that has received the notification (for example, the first AMF 310-1) stores AMF registration information regarding terminals (hereinafter referred to as group terminals) that constitute the same internal group as the accommodated terminal (step S202).
- FIG. 5 is a sequence diagram showing an example of the flow of a handover procedure according to an embodiment of the present invention.
- the first MN 11-1 transmits a handover request (Handover Required) to the first AMF 310-1 (step S301).
- the first AMF 310-1 determines whether the group terminal is using the destination MN.
- the first AMF 310-1 determines that the group terminal is using the destination MN, it transmits a notification indicating Handover Preparation Failure to the first MN 11-1 (step S302).
- the first MN 11-1 changes the destination MN (step S303) and returns to step S301.
- the first AMF 310-1 determines that the destination MN is not used by the group terminal, and if it is necessary to change the AMF, it selects a destination AMF that is not used by the group terminal (step S304). The first AMF 310-1 then completes the handover (step S305).
- the first AMF 310-1 or the destination AMF when changing the AMF, registers in the UDM 320 including the "Global RAN Node ID" of the destination MN (step S306).
- the destination MN and destination AMF of the terminal do not overlap with the MN and AMF that are being used by other group terminals.
- the AMF refers to AMF registration information accommodating other group terminals different from the accommodating terminal, and in the registration procedure or handover procedure in terminal movement, the AMF and the use of AMF can be avoided.
- This allows multiple terminals belonging to the internal group to perform redundant communication. For example, by mounting a plurality of terminals belonging to the same internal group in a car, it is possible to realize communication redundancy in the car.
- Base station 10, terminal 20, and various network nodes include functionality to implement the embodiments described above. However, the base station 10, the terminal 20, and various network nodes may each have only some of the functions in the embodiment.
- FIG. 6 is a diagram showing an example of the functional configuration of the base station 10.
- base station 10 includes a transmitting section 110, a receiving section 120, a setting section 130, and a control section 140.
- the functional configuration shown in FIG. 6 is only an example. As long as the operations according to the embodiments of the present invention can be carried out, the functional divisions and functional parts may have any names.
- the network node may have the same functional configuration as the base station 10. Further, a network node having a plurality of different functions in the system architecture may be configured from a plurality of network nodes separated for each function.
- the transmitting unit 110 includes a function of generating a signal to be transmitted to the terminal 20 or another network node, and transmitting the signal by wire or wirelessly.
- the receiving unit 120 includes a function of receiving various signals transmitted from the terminal 20 or other network nodes, and acquiring, for example, information on a higher layer from the received signals.
- the setting unit 130 stores preset setting information and various setting information to be sent to the terminal 20 in a storage device, and reads them from the storage device as necessary.
- the contents of the setting information include, for example, settings related to communication using NTN.
- control unit 140 performs processing related to communication using NTN. Further, the control unit 140 performs processing related to communication with the terminal 20. Further, the control unit 140 performs processing related to verifying the geographical position of the terminal 20.
- a functional unit related to signal transmission in the control unit 140 may be included in the transmitting unit 110, and a functional unit related to signal reception in the control unit 140 may be included in the receiving unit 120.
- FIG. 7 is a diagram showing an example of the functional configuration of the terminal 20.
- the terminal 20 includes a transmitting section 210, a receiving section 220, a setting section 230, and a control section 240.
- the functional configuration shown in FIG. 7 is only an example. As long as the operations according to the embodiments of the present invention can be carried out, the functional divisions and functional parts may have any names.
- the USIM attached to the terminal 20 may include a transmitting section 210, a receiving section 220, a setting section 230, and a control section 240, like the terminal 20.
- the transmitter 210 creates a transmission signal from the transmission data and wirelessly transmits the transmission signal.
- the receiving unit 220 wirelessly receives various signals and obtains higher layer signals from the received physical layer signals. Furthermore, the receiving unit 220 has a function of receiving NR-PSS, NR-SSS, NR-PBCH, DL/UL control signals, reference signals, etc. transmitted from network nodes.
- the setting unit 230 stores various setting information received from the network node by the receiving unit 220 in a storage device, and reads it from the storage device as necessary.
- the setting unit 230 also stores setting information that is set in advance.
- the network node or wireless communication system of this embodiment may be configured as a network node or wireless communication system shown in each section below. Additionally, the following communication method may be implemented.
- a receiving unit that receives a terminal registration request; Acquires registration information of a network node that controls registration of terminals belonging to a group including the terminal, and based on the registration information, the master node passed through in the registration request communicates with other terminals belonging to the group.
- a control unit that determines whether the master node is a different master node;
- a transmitting unit that transmits a registration request including an identifier for identifying the master node to a network node that manages subscribers of the terminal when the master node is different from other terminals belonging to the group; network node.
- the transmitting unit transmits a subscribe request for notification that a registration request of another terminal belonging to the group has been received to a network node that manages subscribers of other terminals belonging to the group,
- the receiving unit receives, based on the subscription, registration information indicating a registered network node from a network node that manages subscribers of other terminals belonging to the group.
- Network node according to paragraph 1. (Section 3)
- the control unit selects a network node that is not used by other terminals belonging to the group as a network node to be reassigned, based on the registration information.
- the receiving unit receives a handover request due to movement of the terminal,
- the control unit selects a network node that is not used by other terminals belonging to the group as a destination network node, based on the registration information.
- the network node according to any one of clauses 1 to 3.
- a wireless communication system comprising a plurality of network nodes that control registration of terminals, and a plurality of master nodes that perform wireless communication with the terminals, the system comprising:
- Each of the plurality of network nodes includes: a receiving unit that receives a registration request for the terminal; Acquires registration information of a network node that controls the registration of terminals belonging to a group including the terminal, and based on the registration information, the master node passed through in the registration request communicates with other terminals belonging to the group.
- a control unit that determines whether the master node is a different master node; a transmitting unit that transmits a registration request including an identifier for identifying the master node to a network node that manages subscribers of the terminal when the terminal is a different master node from other terminals belonging to the group; Wireless communication system. (Section 5) receiving a registration request for a terminal; Acquires registration information of a network node that controls the registration of terminals belonging to a group including the terminal, and based on the registration information, the master node passed through in the registration request communicates with other terminals belonging to the group.
- any of the above configurations provides a technology that makes it possible to realize communication redundancy in a wireless communication system.
- a registration request including an identifier for identifying the master node can be sent to a network node that manages subscribers of the terminal.
- registration information indicating a network node in which another terminal belonging to the group is registered can be received from a network node that manages subscribers of the terminal.
- a network node that is not used by other terminals belonging to the group can be selected as a reassignment destination or a movement destination network node based on the registration information.
- each functional block may be realized using one physically or logically coupled device, or may be realized using two or more physically or logically separated devices directly or indirectly (e.g. , wired, wireless, etc.) and may be realized using a plurality of these devices.
- the functional block may be realized by combining software with the one device or the plurality of devices.
- Functions include judgment, decision, judgment, calculation, calculation, processing, derivation, investigation, exploration, confirmation, reception, transmission, output, access, resolution, selection, selection, establishment, comparison, assumption, expectation, consideration, These include, but are not limited to, broadcasting, notifying, communicating, forwarding, configuring, reconfiguring, allocating, mapping, and assigning. I can't do it.
- a functional block (configuration unit) that performs transmission is called a transmitting unit or a transmitter. In either case, as described above, the implementation method is not particularly limited.
- the network node, terminal 20, etc. in an embodiment of the present disclosure may function as a computer that performs processing of the wireless communication method of the present disclosure.
- FIG. 8 is a diagram illustrating an example of the hardware configuration of the base station 10 and the terminal 20 according to an embodiment of the present disclosure.
- the network node may have a similar hardware configuration to the base station 10.
- the USIM may have the same hardware configuration as the terminal 20.
- the base station 10 and terminal 20 described above are physically configured as a computer device including a processor 1001, a storage device 1002, an auxiliary storage device 1003, a communication device 1004, an input device 1005, an output device 1006, a bus 1007, etc. Good too.
- the word “apparatus” can be read as a circuit, a device, a unit, etc.
- the hardware configuration of the base station 10 and the terminal 20 may be configured to include one or more of each device shown in the figure, or may be configured not to include some of the devices.
- Each function in the base station 10 and the terminal 20 is performed by loading predetermined software (programs) onto hardware such as the processor 1001 and the storage device 1002, so that the processor 1001 performs calculations and controls communication by the communication device 1004. This is realized by controlling at least one of reading and writing data in the storage device 1002 and the auxiliary storage device 1003.
- the processor 1001 for example, operates an operating system to control the entire computer.
- the processor 1001 may be configured with a central processing unit (CPU) including an interface with peripheral devices, a control device, an arithmetic unit, registers, and the like.
- CPU central processing unit
- control unit 140, control unit 240, etc. may be implemented by the processor 1001.
- the processor 1001 reads programs (program codes), software modules, data, etc. from at least one of the auxiliary storage device 1003 and the communication device 1004 to the storage device 1002, and executes various processes in accordance with these.
- programs program codes
- the control unit 140 of the base station 10 shown in FIG. 6 may be realized by a control program stored in the storage device 1002 and operated on the processor 1001.
- the control unit 240 of the terminal 20 shown in FIG. 7 may be realized by a control program stored in the storage device 1002 and operated on the processor 1001.
- Processor 1001 may be implemented by one or more chips. Note that the program may be transmitted from a network via a telecommunications line.
- the storage device 1002 is a computer-readable recording medium, such as at least one of ROM (Read Only Memory), EPROM (Erasable Programmable ROM), EEPROM (Electrically Erasable Programmable ROM), RAM (Random Access Memory), etc. may be configured.
- the storage device 1002 may be called a register, cache, main memory, or the like.
- the storage device 1002 can store executable programs (program codes), software modules, and the like to implement a communication method according to an embodiment of the present disclosure.
- the auxiliary storage device 1003 is a computer-readable recording medium, such as an optical disk such as a CD-ROM (Compact Disc ROM), a hard disk drive, a flexible disk, a magneto-optical disk (for example, a compact disk, a digital versatile disk, a Blu-ray disk, etc.). -ray disk), smart card, flash memory (eg, card, stick, key drive), floppy disk, magnetic strip, etc.
- the above-mentioned storage medium may be, for example, a database including at least one of the storage device 1002 and the auxiliary storage device 1003, a server, or other suitable medium.
- the communication device 1004 is hardware (transmission/reception device) for communicating between computers via at least one of a wired network and a wireless network, and is also referred to as a network device, network controller, network card, communication module, etc., for example.
- the communication device 1004 includes, for example, a high frequency switch, a duplexer, a filter, a frequency synthesizer, etc. in order to realize at least one of frequency division duplex (FDD) and time division duplex (TDD). It may be composed of.
- FDD frequency division duplex
- TDD time division duplex
- the transmitting and receiving unit may be physically or logically separated into a transmitting unit and a receiving unit.
- the input device 1005 is an input device (eg, keyboard, mouse, microphone, switch, button, sensor, etc.) that accepts input from the outside.
- the output device 1006 is an output device (for example, a display, a speaker, an LED lamp, etc.) that performs output to the outside. Note that the input device 1005 and the output device 1006 may have an integrated configuration (for example, a touch panel).
- each device such as the processor 1001 and the storage device 1002 is connected by a bus 1007 for communicating information.
- the bus 1007 may be configured using a single bus, or may be configured using different buses for each device.
- the base station 10 and the terminal 20 also include hardware such as a microprocessor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a programmable logic device (PLD), and a field programmable gate array (FPGA).
- DSP digital signal processor
- ASIC application specific integrated circuit
- PLD programmable logic device
- FPGA field programmable gate array
- a part or all of each functional block may be realized by the hardware.
- processor 1001 may be implemented using at least one of these hardwares.
- FIG. 9 shows an example of the configuration of the vehicle 2001.
- the vehicle 2001 includes a drive unit 2002, a steering unit 2003, an accelerator pedal 2004, a brake pedal 2005, a shift lever 2006, a front wheel 2007, a rear wheel 2008, an axle 2009, an electronic control unit 2010, and various sensors 2021 to 2029. , an information service section 2012 and a communication module 2013.
- Each aspect/embodiment described in this disclosure may be applied to a communication device mounted on vehicle 2001, for example, may be applied to communication module 2013.
- the drive unit 2002 is composed of, for example, an engine, a motor, or a hybrid of an engine and a motor.
- the steering unit 2003 includes at least a steering wheel (also referred to as a steering wheel), and is configured to steer at least one of the front wheels and the rear wheels based on the operation of the steering wheel operated by the user.
- the electronic control unit 2010 is composed of a microprocessor 2031, memory (ROM, RAM) 2032, and communication port (IO port) 2033. Signals from various sensors 2021 to 2029 provided in the vehicle 2001 are input to the electronic control unit 2010.
- the electronic control unit 2010 may also be called an ECU (Electronic Control Unit).
- Signals from various sensors 2021 to 2029 include a current signal from a current sensor 2021 that senses the motor current, a front wheel and rear wheel rotation speed signal obtained by a rotation speed sensor 2022, and a front wheel rotation speed signal obtained by an air pressure sensor 2023. and rear wheel air pressure signals, vehicle speed signals acquired by vehicle speed sensor 2024, acceleration signals acquired by acceleration sensor 2025, accelerator pedal depression amount signals acquired by accelerator pedal sensor 2029, and brake pedal sensor 2026. These include a brake pedal depression amount signal, a shift lever operation signal acquired by the shift lever sensor 2027, a detection signal for detecting obstacles, vehicles, pedestrians, etc. acquired by the object detection sensor 2028, and the like.
- the information service department 2012 controls various devices such as car navigation systems, audio systems, speakers, televisions, and radios that provide (output) various information such as driving information, traffic information, and entertainment information, and these devices. It is composed of one or more ECUs.
- the information service unit 2012 provides various multimedia information and multimedia services to the occupants of the vehicle 2001 using information acquired from an external device via the communication module 2013 and the like.
- the information service department 2012 may include an input device (for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, a touch panel, etc.) that accepts input from the outside, and an output device that performs output to the outside (for example, display, speaker, LED lamp, touch panel, etc.).
- an input device for example, a keyboard, a mouse, a microphone, a switch, a button, a sensor, a touch panel, etc.
- an output device that performs output to the outside (for example, display, speaker, LED lamp, touch panel, etc.).
- the driving support system unit 2030 includes a millimeter wave radar, LiDAR (Light Detection and Ranging), a camera, a positioning locator (for example, GNSS, etc.), map information (for example, a high-definition (HD) map, an autonomous vehicle (AV) map, etc.) ), gyro systems (e.g., IMU (Inertial Measurement Unit), INS (Inertial Navigation System), etc.), AI (Artificial Intelligence) chips, and AI processors that prevent accidents and reduce the driver's driving burden.
- the system is comprised of various devices that provide functions for the purpose and one or more ECUs that control these devices. Further, the driving support system unit 2030 transmits and receives various information via the communication module 2013, and realizes a driving support function or an automatic driving function.
- Communication module 2013 can communicate with microprocessor 2031 and components of vehicle 2001 via a communication port.
- the communication module 2013 communicates with the drive unit 2002, steering unit 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, front wheels 2007, rear wheels 2008, axle 2009, electronic Data is transmitted and received between the microprocessor 2031, memory (ROM, RAM) 2032, and sensors 2021 to 29 in the control unit 2010.
- the communication module 2013 is a communication device that can be controlled by the microprocessor 2031 of the electronic control unit 2010 and can communicate with external devices. For example, various information is transmitted and received with an external device via wireless communication.
- the communication module 2013 may be located either inside or outside the electronic control unit 2010.
- the external device may be, for example, a base station, a mobile station, or the like.
- the communication module 2013 receives signals from the various sensors 2021 to 2029 described above that are input to the electronic control unit 2010, information obtained based on the signals, and input from the outside (user) obtained via the information service unit 2012. At least one of the information based on the information may be transmitted to an external device via wireless communication.
- the electronic control unit 2010, various sensors 2021-2029, information service unit 2012, etc. may be called an input unit that receives input.
- the PUSCH transmitted by the communication module 2013 may include information based on the above input.
- the communication module 2013 receives various information (traffic information, signal information, inter-vehicle information, etc.) transmitted from an external device, and displays it on the information service section 2012 provided in the vehicle 2001.
- the information service unit 2012 is an output unit that outputs information (for example, outputs information to devices such as a display and a speaker based on the PDSCH (or data/information decoded from the PDSCH) received by the communication module 2013). may be called.
- the communication module 2013 also stores various information received from external devices into a memory 2032 that can be used by the microprocessor 2031. Based on the information stored in the memory 2032, the microprocessor 2031 controls the drive section 2002, steering section 2003, accelerator pedal 2004, brake pedal 2005, shift lever 2006, front wheel 2007, rear wheel 2008, and axle 2009 provided in the vehicle 2001. , sensors 2021 to 2029, etc. may be controlled.
- the operations of a plurality of functional sections may be physically performed by one component, or the operations of one functional section may be physically performed by a plurality of components.
- the order of processing may be changed as long as there is no contradiction.
- Software operated by the processor included in the base station 10 according to the embodiment of the present invention and software operated by the processor included in the terminal 20 according to the embodiment of the present invention are respectively random access memory (RAM), flash memory, and read-only memory. (ROM), EPROM, EEPROM, register, hard disk (HDD), removable disk, CD-ROM, database, server, or any other suitable storage medium.
- the notification of information is not limited to the aspects/embodiments described in this disclosure, and may be performed using other methods.
- the notification of information may be physical layer signaling (e.g., DCI (Downlink Control Information), UCI (Uplink Control Information)), upper layer signaling (e.g., RRC (Radio Resource Control) signaling, MAC (Medium Access Control) signaling). , broadcast information (MIB (Master Information Block), SIB (System Information Block)), other signals, or a combination thereof.
- RRC signaling may be called an RRC message, and may be, for example, an RRC Connection Setup message, an RRC Connection Reconfiguration message, or the like.
- Each aspect/embodiment described in this disclosure is LTE (Long Term Evolution), LTE-A (LTE-Advanced), SUPER 3G, IMT-Advanced, 4G (4th generation mobile communication system), 5G (5th generation mobile communication system). system), 6th generation mobile communication system (6G), xth generation mobile communication system (xG) (xG (x is an integer or decimal number, for example)), FRA (Future Radio Access), NR (new Radio), New radio access ( NX), Future generation radio access (FX), W-CDMA (registered trademark), GSM (registered trademark), CDMA2000, UMB (Ultra Mobile Broadband), IEEE 802.11 (Wi-Fi (registered trademark)), IEEE 802 Systems that utilize .16 (WiMAX (registered trademark)), IEEE 802.20, UWB (Ultra-WideBand), Bluetooth (registered trademark), and other appropriate systems, and that are extended, modified, created, and defined based on these.
- the present invention may be
- the base station 10 may be performed by its upper node in some cases.
- various operations performed for communication with a terminal 20 are performed by the base station 10 and other network nodes other than the base station 10. It is clear that this can be done by at least one of the following: for example, MME or S-GW (possible, but not limited to).
- MME Mobility Management Entity
- S-GW Packet Control Function
- the other network node may be a combination of multiple other network nodes (for example, MME and S-GW).
- the information, signals, etc. described in this disclosure can be output from an upper layer (or lower layer) to a lower layer (or upper layer). It may be input/output via multiple network nodes.
- the input/output information may be stored in a specific location (for example, memory) or may be managed using a management table. Information etc. to be input/output may be overwritten, updated, or additionally written. The output information etc. may be deleted. The input information etc. may be transmitted to other devices.
- the determination in the present disclosure may be performed based on a value represented by 1 bit (0 or 1), a truth value (Boolean: true or false), or a comparison of numerical values (e.g. , comparison with a predetermined value).
- Software includes instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, whether referred to as software, firmware, middleware, microcode, hardware description language, or by any other name. , should be broadly construed to mean an application, software application, software package, routine, subroutine, object, executable, thread of execution, procedure, function, etc.
- software, instructions, information, etc. may be sent and received via a transmission medium.
- a transmission medium For example, if the software uses wired technology (coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), etc.) and/or wireless technology (infrared, microwave, etc.) to create a website, When transmitted from a server or other remote source, these wired and/or wireless technologies are included within the definition of transmission medium.
- wired technology coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), etc.
- wireless technology infrared, microwave, etc.
- data, instructions, commands, information, signals, bits, symbols, chips, etc. which may be referred to throughout the above description, may refer to voltages, currents, electromagnetic waves, magnetic fields or magnetic particles, light fields or photons, or any of these. It may also be represented by a combination of
- At least one of the channel and the symbol may be a signal.
- the signal may be a message.
- a component carrier may also be called a carrier frequency, a cell, a frequency carrier, or the like.
- system and “network” are used interchangeably.
- radio resources may be indicated by an index.
- Base Station BS
- wireless base station base station
- base station fixed station
- NodeB eNodeB
- gNodeB gNodeB
- a base station can accommodate one or more (eg, three) cells. If a base station accommodates multiple cells, the overall coverage area of the base station can be partitioned into multiple smaller areas, and each smaller area is divided into multiple subsystems (e.g., small indoor base stations (RRHs)). Communication services can also be provided by Remote Radio Head).
- RRHs small indoor base stations
- Communication services can also be provided by Remote Radio Head).
- the term "cell” or “sector” refers to part or all of the coverage area of a base station and/or base station subsystem that provides communication services in this coverage.
- the base station transmitting information to the terminal may be read as the base station instructing the terminal to control/operate based on the information.
- MS Mobile Station
- UE User Equipment
- a mobile station is defined by a person skilled in the art as a subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless It may also be referred to as a terminal, remote terminal, handset, user agent, mobile client, client, or some other suitable terminology.
- At least one of a base station and a mobile station may be called a transmitting device, a receiving device, a communication device, etc.
- the base station and the mobile station may be a device mounted on a mobile body, the mobile body itself, or the like.
- the moving body refers to a movable object, and the moving speed is arbitrary. Naturally, this also includes cases where the moving object is stopped.
- the mobile objects include, for example, vehicles, transport vehicles, automobiles, motorcycles, bicycles, connected cars, excavators, bulldozers, wheel loaders, dump trucks, forklifts, trains, buses, carts, rickshaws, ships and other watercraft.
- the mobile object may be a mobile object that autonomously travels based on a travel command. It may be a vehicle (e.g. car, airplane, etc.), an unmanned moving object (e.g. drone, self-driving car, etc.), or a robot (manned or unmanned). good.
- the base station and the mobile station includes devices that do not necessarily move during communication operations.
- at least one of the base station and the mobile station may be an IoT (Internet of Things) device such as a sensor.
- IoT Internet of Things
- the base station in the present disclosure may be replaced by a user terminal.
- communication between a base station and a user terminal is replaced with communication between a plurality of terminals 20 (for example, it may be called D2D (Device-to-Device), V2X (Vehicle-to-Everything), etc.).
- the terminal 20 may have the functions that the base station 10 described above has.
- words such as "up” and “down” may be replaced with words corresponding to inter-terminal communication (for example, "side”).
- uplink channels, downlink channels, etc. may be replaced with side channels.
- the user terminal in the present disclosure may be replaced with a base station.
- the base station may have the functions that the user terminal described above has.
- determining may encompass a wide variety of operations.
- “Judgment” and “decision” include, for example, judging, calculating, computing, processing, deriving, investigating, looking up, search, and inquiry. (e.g., searching in a table, database, or other data structure), and regarding an ascertaining as a “judgment” or “decision.”
- judgment and “decision” refer to receiving (e.g., receiving information), transmitting (e.g., sending information), input, output, and access.
- (accessing) may include considering something as a “judgment” or “decision.”
- judgment and “decision” refer to resolving, selecting, choosing, establishing, comparing, etc. as “judgment” and “decision”. may be included.
- judgment and “decision” may include regarding some action as having been “judged” or “determined.”
- judgment (decision) may be read as “assuming", “expecting", “considering”, etc.
- connection refers to any connection or coupling, direct or indirect, between two or more elements and to each other. It may include the presence of one or more intermediate elements between two elements that are “connected” or “coupled.”
- the bonds or connections between elements may be physical, logical, or a combination thereof. For example, "connection” may be replaced with "access.”
- two elements may include one or more electrical wires, cables, and/or printed electrical connections, as well as in the radio frequency domain, as some non-limiting and non-inclusive examples. , electromagnetic energy having wavelengths in the microwave and optical (both visible and non-visible) ranges.
- the reference signal can also be abbreviated as RS (Reference Signal), and may be called a pilot depending on the applied standard.
- RS Reference Signal
- the phrase “based on” does not mean “based solely on” unless explicitly stated otherwise. In other words, the phrase “based on” means both “based only on” and “based at least on.”
- any reference to elements using the designations "first,” “second,” etc. does not generally limit the amount or order of those elements. These designations may be used in this disclosure as a convenient way to distinguish between two or more elements. Thus, reference to a first and second element does not imply that only two elements may be employed or that the first element must precede the second element in any way.
- a radio frame may be composed of one or more frames in the time domain. Each frame or frames in the time domain may be called a subframe. A subframe may also be composed of one or more slots in the time domain. A subframe may have a fixed time length (eg, 1 ms) that does not depend on numerology.
- the numerology may be a communication parameter applied to the transmission and/or reception of a certain signal or channel. Numerology includes, for example, subcarrier spacing (SCS), bandwidth, symbol length, cyclic prefix length, transmission time interval (TTI), number of symbols per TTI, radio frame configuration, and transmitter/receiver. It may also indicate at least one of a specific filtering process performed in the frequency domain, a specific windowing process performed by the transceiver in the time domain, and the like.
- SCS subcarrier spacing
- TTI transmission time interval
- transmitter/receiver transmitter/receiver. It may also indicate at least one of a specific filtering process performed in the frequency domain, a specific windowing process performed by the transceiver in the time domain, and the like.
- a slot may be composed of one or more symbols (OFDM (Orthogonal Frequency Division Multiplexing) symbols, SC-FDMA (Single Carrier Frequency Division Multiple Access) symbols, etc.) in the time domain.
- a slot may be a unit of time based on numerology.
- a slot may include multiple mini-slots. Each minislot may be made up of one or more symbols in the time domain. Furthermore, a mini-slot may also be called a sub-slot. A minislot may be made up of fewer symbols than a slot.
- PDSCH (or PUSCH) transmitted in time units larger than minislots may be referred to as PDSCH (or PUSCH) mapping type A.
- PDSCH (or PUSCH) transmitted using minislots may be referred to as PDSCH (or PUSCH) mapping type B.
- Radio frames, subframes, slots, minislots, and symbols all represent time units when transmitting signals. Other names may be used for the radio frame, subframe, slot, minislot, and symbol.
- one subframe may be called a transmission time interval (TTI)
- TTI transmission time interval
- multiple consecutive subframes may be called a TTI
- one slot or one minislot may be called a TTI. It's okay.
- at least one of the subframe and TTI may be a subframe (1ms) in existing LTE, a period shorter than 1ms (for example, 1-13 symbols), or a period longer than 1ms. It may be.
- the unit representing the TTI may be called a slot, minislot, etc. instead of a subframe.
- TTI refers to, for example, the minimum time unit for scheduling in wireless communication.
- a base station performs scheduling to allocate radio resources (frequency bandwidth, transmission power, etc. that can be used by each terminal 20) to each terminal 20 on a TTI basis.
- radio resources frequency bandwidth, transmission power, etc. that can be used by each terminal 20
- TTI is not limited to this.
- the TTI may be a transmission time unit of a channel-coded data packet (transport block), a code block, a codeword, etc., or may be a processing unit of scheduling, link adaptation, etc. Note that when a TTI is given, the time interval (for example, the number of symbols) to which transport blocks, code blocks, code words, etc. are actually mapped may be shorter than the TTI.
- one slot or one minislot is called a TTI
- one or more TTIs may be the minimum time unit for scheduling.
- the number of slots (minislot number) that constitutes the minimum time unit of the scheduling may be controlled.
- a TTI having a time length of 1 ms may be called a normal TTI (TTI in LTE Rel. 8-12), normal TTI, long TTI, normal subframe, normal subframe, long subframe, slot, etc.
- TTI that is shorter than the normal TTI may be referred to as an abbreviated TTI, short TTI, partial or fractional TTI, shortened subframe, short subframe, minislot, subslot, slot, etc.
- long TTI for example, normal TTI, subframe, etc.
- short TTI for example, short TTI, etc. It may also be read as a TTI having the above TTI length.
- a resource block is a resource allocation unit in the time domain and frequency domain, and may include one or more continuous subcarriers in the frequency domain.
- the number of subcarriers included in an RB may be the same regardless of the numerology, and may be 12, for example.
- the number of subcarriers included in an RB may be determined based on newerology.
- the time domain of an RB may include one or more symbols, and may be one slot, one minislot, one subframe, or one TTI in length.
- One TTI, one subframe, etc. may each be composed of one or more resource blocks.
- one or more RBs include physical resource blocks (PRBs), sub-carrier groups (SCGs), resource element groups (REGs), PRB pairs, RB pairs, etc. May be called.
- PRBs physical resource blocks
- SCGs sub-carrier groups
- REGs resource element groups
- PRB pairs RB pairs, etc. May be called.
- a resource block may be configured by one or more resource elements (REs).
- REs resource elements
- 1 RE may be a radio resource region of 1 subcarrier and 1 symbol.
- a bandwidth part (which may also be called a partial bandwidth or the like) may represent a subset of consecutive common resource blocks (RBs) for a certain numerology in a certain carrier.
- the common RB may be specified by an RB index based on a common reference point of the carrier.
- PRBs may be defined in a BWP and numbered within that BWP.
- the BWP may include a UL BWP (UL BWP) and a DL BWP (DL BWP).
- UL BWP UL BWP
- DL BWP DL BWP
- One or more BWPs may be configured for the terminal 20 within one carrier.
- At least one of the configured BWPs may be active, and the terminal 20 does not need to assume that it transmits or receives a given signal/channel outside the active BWP.
- Note that "cell”, “carrier”, etc. in the present disclosure may be replaced with "BWP”.
- radio frames, subframes, slots, minislots, symbols, etc. described above are merely examples.
- the number of subframes included in a radio frame, the number of slots per subframe or radio frame, the number of minislots included in a slot, the number of symbols and RBs included in a slot or minislot, the number of symbols included in an RB, Configurations such as the number of subcarriers, the number of symbols in a TTI, the symbol length, and the cyclic prefix (CP) length can be changed in various ways.
- a and B are different may mean “A and B are different from each other.” Note that the term may also mean that "A and B are each different from C”. Terms such as “separate” and “coupled” may also be interpreted similarly to “different.”
- notification of prescribed information is not limited to being done explicitly, but may also be done implicitly (for example, not notifying the prescribed information). Good too.
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Abstract
Description
図1は、本発明の実施の形態に係る無線通信システムについて説明するための図である。
本発明の実施の形態に係る無線通信システムは、図1に示されるように、基地局10及び端末20を含む。図1には、基地局10及び端末20が1つずつ示されているが、これは例であり、それぞれ複数であってもよい。
次に、これまでに説明した処理及び動作を実施する基地局10、端末20および各種のネットワークノードの機能構成例を説明する。基地局10、端末20および各種のネットワークノードは、上述した実施例を実施する機能を含む。ただし、基地局10、端末20および各種のネットワークノードは、それぞれ、実施例の中の一部の機能のみを備えることとしてもよい。
図6は、基地局10の機能構成の一例を示す図である。図6に示されるように、基地局10は、送信部110と、受信部120と、設定部130と、制御部140とを有する。図6に示される機能構成は一例に過ぎない。本発明の実施の形態に係る動作を実施できるのであれば、機能区分及び機能部の名称はどのようなものでもよい。なお、ネットワークノードは、基地局10と同様の機能構成を有してもよい。また、システムアーキテクチャ上で複数の異なる機能を有するネットワークノードは、機能ごとに分離された複数のネットワークノードから構成されてもよい。
図7は、端末20の機能構成の一例を示す図である。図7に示されるように、端末20は、送信部210と、受信部220と、設定部230と、制御部240とを有する。図7に示される機能構成は一例に過ぎない。本発明の実施の形態に係る動作を実施できるのであれば、機能区分及び機能部の名称はどのようなものでもよい。端末20が装着するUSIMは、端末20と同様に、送信部210と、受信部220と、設定部230と、制御部240とを有してもよい。
(第1項)
端末の登録要求を受信する受信部と、
前記端末を含むグループに属する端末の登録の制御を行うネットワークノードの登録情報を取得して、前記登録情報に基づいて、前記登録要求において経由されたマスターノードが、前記グループに属する他の端末と異なるマスターノードであるか否かを判定する制御部と、
前記グループに属する他の端末と異なるマスターノードである場合に、前記マスターノードを識別する識別子を含む登録要求を、端末の加入者を管理するネットワークノードに送信する送信部と、を備える、
ネットワークノード。
(第2項)
前記送信部は、前記グループに属する他の端末の加入者を管理するネットワークノードに、前記グループに属する他の端末の登録要求を受信したことの通知のためのサブスクライブの要求を送信し、
前記受信部は、前記サブスクライブに基づいて、登録されたネットワークノードを示す登録情報を、前記グループに属する他の端末の加入者を管理するネットワークノードから受信する、
第1項に記載のネットワークノード。
(第3項)
前記制御部は、前記登録情報に基づいて、前記グループに属する他の端末が使っていないネットワークノードを再割り当て先のネットワークノードとして選定する、
第1項または第2項に記載のネットワークノード。
(第4項)
前記受信部は、端末の移動に伴うハンドオーバ要求を受信し、
前記制御部は、前記登録情報に基づいて、前記グループに属する他の端末が使っていないネットワークノードを移動先のネットワークノードとして選定する、
第1項から第3項のいずれか1項に記載のネットワークノード。
(第4項)
端末の登録の制御を行う複数のネットワークノードと、前記端末と無線通信を行う複数のマスターノードと、を備える無線通信システムであって、
前記複数のネットワークノードのそれぞれは、
前記端末の登録要求を受信する受信部と、
前記端末を含むグループに属する端末の登録の制御を行うネットワークノードの登録情報を取得して、前記登録情報に基づいて、前記登録要求において経由されたマスターノードが、前記グループに属する他の端末と異なるマスターノードであるか否かを判定する制御部と、
前記グループに属する他の端末と異なるマスターノードである場合に、前記マスターノードを識別する識別子を含む登録要求を、端末の加入者を管理するネットワークノードに送信する送信部と、を備える、
無線通信システム。
(第5項)
端末の登録要求を受信するステップと、
前記端末を含むグループに属する端末の登録の制御を行うネットワークノードの登録情報を取得して、前記登録情報に基づいて、前記登録要求において経由されたマスターノードが、前記グループに属する他の端末と異なるマスターノードであるか否かを判定するステップと、
前記グループに属する他の端末と異なるマスターノードである場合に、前記マスターノードを識別する識別子を含む登録要求を、端末の加入者を管理するネットワークノードに送信するステップと、を備える、
ネットワークノードが実行する通信方法。
上記実施形態の説明に用いたブロック図(図6及び図7)は、機能単位のブロックを示している。これらの機能ブロック(構成部)は、ハードウェア及びソフトウェアの少なくとも一方の任意の組み合わせによって実現される。また、各機能ブロックの実現方法は特に限定されない。すなわち、各機能ブロックは、物理的又は論理的に結合した1つの装置を用いて実現されてもよいし、物理的又は論理的に分離した2つ以上の装置を直接的又は間接的に(例えば、有線、無線などを用いて)接続し、これら複数の装置を用いて実現されてもよい。機能ブロックは、上記1つの装置又は上記複数の装置にソフトウェアを組み合わせて実現されてもよい。
以上、本発明の実施の形態を説明してきたが、開示される発明はそのような実施形態に限定されず、当業者は様々な変形例、修正例、代替例、置換例等を理解するであろう。発明の理解を促すため具体的な数値例を用いて説明がなされたが、特に断りのない限り、それらの数値は単なる一例に過ぎず適切な如何なる値が使用されてもよい。上記の説明における項目の区分けは本発明に本質的ではなく、2以上の項目に記載された事項が必要に応じて組み合わせて使用されてよいし、ある項目に記載された事項が、別の項目に記載された事項に(矛盾しない限り)適用されてよい。機能ブロック図における機能部又は処理部の境界は必ずしも物理的な部品の境界に対応するとは限らない。複数の機能部の動作が物理的には1つの部品で行われてもよいし、あるいは1つの機能部の動作が物理的には複数の部品により行われてもよい。実施の形態で述べた処理手順については、矛盾の無い限り処理の順序を入れ替えてもよい。処理説明の便宜上、基地局10及び端末20は機能的なブロック図を用いて説明されたが、そのような装置はハードウェアで、ソフトウェアで又はそれらの組み合わせで実現されてもよい。本発明の実施の形態に従って基地局10が有するプロセッサにより動作するソフトウェア及び本発明の実施の形態に従って端末20が有するプロセッサにより動作するソフトウェアはそれぞれ、ランダムアクセスメモリ(RAM)、フラッシュメモリ、読み取り専用メモリ(ROM)、EPROM、EEPROM、レジスタ、ハードディスク(HDD)、リムーバブルディスク、CD-ROM、データベース、サーバその他の適切な如何なる記憶媒体に保存されてもよい。
11-1 第一のMN
11-2 第二のMN
11-3 第三のMN
110 送信部
120 受信部
130 設定部
140 制御部
20 端末
20-1 第一のUE
20-2 第二のUE
20-3 第三のUE
30 コアネットワーク
40 DN
210 送信部
220 受信部
230 設定部
240 制御部
310-1 第一のAMF
310-2 第二のAMF
310-3 第三のAMF
320 UDM
330 NEF
340 NRF
350 AUSF
360 PCF
370 SMF
380 UPF
390 AF
1001 プロセッサ
1002 記憶装置
1003 補助記憶装置
1004 通信装置
1005 入力装置
1006 出力装置
2001 車両
2002 駆動部
2003 操舵部
2004 アクセルペダル
2005 ブレーキペダル
2006 シフトレバー
2007 前輪
2008 後輪
2009 車軸
2010 電子制御部
2012 情報サービス部
2013 通信モジュール
2021 電流センサ
2022 回転数センサ
2023 空気圧センサ
2024 車速センサ
2025 加速度センサ
2026 ブレーキペダルセンサ
2027 シフトレバーセンサ
2028 物体検出センサ
2029 アクセルペダルセンサ
2030 運転支援システム部
2031 マイクロプロセッサ
2032 メモリ(ROM,RAM)
2033 通信ポート(IOポート)
Claims (6)
- 端末の登録要求を受信する受信部と、
前記端末を含むグループに属する端末の登録の制御を行うネットワークノードの登録情報を取得して、前記登録情報に基づいて、前記登録要求において経由されたマスターノードが、前記グループに属する他の端末と異なるマスターノードであるか否かを判定する制御部と、
前記グループに属する他の端末と異なるマスターノードである場合に、前記マスターノードを識別する識別子を含む登録要求を、端末の加入者を管理するネットワークノードに送信する送信部と、を備える、
ネットワークノード。 - 前記送信部は、前記グループに属する他の端末の加入者を管理するネットワークノードに、前記グループに属する他の端末の登録要求を受信したことの通知のためのサブスクライブの要求を送信し、
前記受信部は、前記サブスクライブに基づいて、登録されたネットワークノードを示す登録情報を、前記グループに属する他の端末の加入者を管理するネットワークノードから受信する、
請求項1に記載のネットワークノード。 - 前記制御部は、前記登録情報に基づいて、前記グループに属する他の端末が使っていないネットワークノードを再割り当て先のネットワークノードとして選定する、
請求項1に記載のネットワークノード。 - 前記受信部は、端末の移動に伴うハンドオーバ要求を受信し、
前記制御部は、前記登録情報に基づいて、前記グループに属する他の端末が使っていないネットワークノードを移動先のネットワークノードとして選定する、
請求項1に記載のネットワークノード。 - 端末の登録の制御を行う複数のネットワークノードと、前記端末と無線通信を行う複数のマスターノードと、を備える無線通信システムであって、
前記複数のネットワークノードのそれぞれは、
前記端末の登録要求を受信する受信部と、
前記端末を含むグループに属する端末の登録の制御を行うネットワークノードの登録情報を取得して、前記登録情報に基づいて、前記登録要求において経由されたマスターノードが、前記グループに属する他の端末と異なるマスターノードであるか否かを判定する制御部と、
前記グループに属する他の端末と異なるマスターノードである場合に、前記マスターノードを識別する識別子を含む登録要求を、端末の加入者を管理するネットワークノードに送信する送信部と、を備える、
無線通信システム。 - 端末の登録要求を受信するステップと、
前記端末を含むグループに属する端末の登録の制御を行うネットワークノードの登録情報を取得して、前記登録情報に基づいて、前記登録要求において経由されたマスターノードが、前記グループに属する他の端末と異なるマスターノードであるか否かを判定するステップと、
前記グループに属する他の端末と異なるマスターノードである場合に、前記マスターノードを識別する識別子を含む登録要求を、端末の加入者を管理するネットワークノードに送信するステップと、を備える、
ネットワークノードが実行する通信方法。
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Non-Patent Citations (5)
| Title |
|---|
| 3GPP TS 23.501 V17.2.0, September 2021 (2021-09-01) |
| 3GPP TS 23.502 V17.2.1, September 2021 (2021-09-01) |
| ERICSSON: "Further discussion on Higher Layer Multi-Connectivity related to the Key Issue 1", 3GPP DRAFT; R3-190817, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG3, no. Athens, Greece; 20190225 - 20190301, 16 February 2019 (2019-02-16), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051604751 * |
| ERICSSON: "Updates to solution #2 on Multiple UEs per device for user plane redundancy", 3GPP DRAFT; S2-187316_6422-UPDATE-REDUNDANCY-MULTIPLE-UE.PA8, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. SA WG2, no. Vilnius, Lithuania; 20180702 - 20180706, 4 July 2018 (2018-07-04), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051469386 * |
| NOKIA, NOKIA SHANGHAI BELL: "KI#1 - Updates to Solution #2", 3GPP DRAFT; S2-1811835-SOLUTION2-UPDATE, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. SA WG2, no. West Palm Beach, USA; 20181126 - 20181130, 20 November 2018 (2018-11-20), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051498597 * |
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| JPWO2023218509A1 (ja) | 2023-11-16 |
| CN119138050A (zh) | 2024-12-13 |
| US20250330933A1 (en) | 2025-10-23 |
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