WO2020145307A1 - Ue、コアネットワーク装置、及び通信制御方法 - Google Patents
Ue、コアネットワーク装置、及び通信制御方法 Download PDFInfo
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- WO2020145307A1 WO2020145307A1 PCT/JP2020/000314 JP2020000314W WO2020145307A1 WO 2020145307 A1 WO2020145307 A1 WO 2020145307A1 JP 2020000314 W JP2020000314 W JP 2020000314W WO 2020145307 A1 WO2020145307 A1 WO 2020145307A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/12—Setup of transport tunnels
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/14—Reselecting a network or an air interface
- H04W36/144—Reselecting a network or an air interface over a different radio air interface technology
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/70—Admission control; Resource allocation
- H04L47/78—Architectures of resource allocation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/0289—Congestion control
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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
- H04W36/22—Performing reselection for specific purposes for handling the traffic
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/02—Access restriction performed under specific conditions
- H04W48/06—Access restriction performed under specific conditions based on traffic conditions
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/18—Selecting a network or a communication service
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
- H04W76/22—Manipulation of transport tunnels
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/22—Processing or transfer of terminal data, e.g. status or physical capabilities
- H04W8/24—Transfer of terminal data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/04—Large scale networks; Deep hierarchical networks
- H04W84/042—Public Land Mobile systems, e.g. cellular systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/11—Allocation or use of connection identifiers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/18—Management of setup rejection or failure
Definitions
- FIG. 1 is a diagram showing an example of a configuration of an access network in a mobile communication system.
- Fig. 6 is a diagram showing an example of a configuration of a core network_A in the mobile communication system.
- Fig. 3 is a diagram showing an example of a configuration of a core network_B in a mobile communication system.
- It is a figure which shows the apparatus structure of UE.
- It is a figure which shows the apparatus structure of eNB/NR node.
- MME/AMF It is a figure which shows the apparatus structure of SMF/PGW/UPF.
- It is a figure which shows an initial procedure.
- It is a figure which shows a registration procedure.
- PDU session establishment procedure It is a figure which shows the session management procedure of a network initiative.
- ESM ESM
- the core network_A90, the core network B, or a combination thereof may be referred to as a core network
- the access network_A, the access network_B, or a combination thereof may also be referred to as an access network or a wireless access network.
- DN_A5, PDN_A6 or a combination of these is also referred to as DN.
- UE_A10 can also connect to the access network and/or the core network. Further, the UE_A 10 can be connected to the DN_A and/or PDN_A via the access network and/or the core network. UE_A10 transmits and receives (communicates) user data with DN_A and/or PDN_A using a PDU (Protocol Data Unit or Packet Data Unit) session and/or a PDN (Packet Data Network) connection (also referred to as PDN connection). ) Do. Furthermore, the communication of user data is not limited to IP (Internet Protocol) communication (IPv4 or IPv6), and may be non-IP communication in EPS, Ethernet (registered trademark) communication or Unstructured communication in 5GS. It may be.
- IP Internet Protocol
- E-UTRAN_A80 is an LTE access network and is configured to include one or more eNB_A45.
- the eNB_A45 is a wireless base station to which the UE_A10 connects by E-UTRA (Evolved Universal Terrestrial Radio Access).
- E-UTRA Evolved Universal Terrestrial Radio Access
- each eNB may be connected to each other.
- NG-RAN_A120 may be an access network composed of E-UTRA and/or 5G RadioAccess.
- NG-RAN_A120 may include eNB_A45, NR node_A122, or both.
- the eNB_A45 and the NR node_A122 may be the same device. Therefore, NR node_A122 can be replaced with eNB_A45.
- Core network_A90 has HSS (Home Subscriber Server)_A50, AAA (Authentication Authorization Accounting), PCRF (Policy and Charging Rules Function), PGW_A30, ePDG, SGW_A35, MME (Mobility Management Entity)_A40, SGSN (Serving GPRS) Support. At least one of Node) and SCEF may be included. Then, these may be configured as an NF (Network Function). The NF may refer to a processing function configured in the network. Further, the core network_A90 can be connected to a plurality of radio access networks (UTRAN_A20, E-UTRAN_A80).
- the MME_A40 may also be a relay device that transfers user data as a gateway between the core network_A90 and the access network.
- the user data transmitted/received by the MME_A 40 acting as a gateway may be small data.
- RM also has a non-registration state (RM-DEREGISTERED state) and a registration state (RM-REGISTERED state).
- RM-DEREGISTERED state since the UE is not registered in the network, the UE context in AMF does not have valid location information or routing information for that UE, so AMF cannot reach the UE. is there. Further, in the RM-REGISTERED state, since the UE is registered in the network, the UE can receive a service that requires registration with the network.
- CM-IDLE state there are a non-connection state (CM-IDLE state) and a connection state (CM-CONNECTED state).
- CM-IDLE state the UE is in the RM-REGISTERED state, but does not have a NAS signaling connection established with the AMF via the N1 interface.
- the UE does not have the N2 interface connection (N2 connection) and the N3 interface connection (N3 connection).
- N2 connection N2 connection
- N3 connection N3 connection
- the CM-CONNECTED state it has a NAS signaling connection established with the AMF via the N1 interface.
- the CM-CONNECTED state the UE may have an N2 interface connection (N2 connection) and/or an N3 interface connection (N3 connection).
- UDSF provides a function for all NFs to store and retrieve information as unstructured data.
- N3IWF establishes an IPsec tunnel with UE, relays NAS (N1) signaling between UE and AMF, processes N2 signaling transmitted from SMF and relayed by AMF, and establishes IPsec Security Association (IPsec SA). It provides functions such as relaying user plane packets between UE and UPF, and AMF selection.
- NAS N1
- N2 N2 signaling transmitted from SMF and relayed by AMF
- IPsec SA IPsec Security Association
- S1 mode is a UE mode that enables sending and receiving of messages using the S1 interface.
- the S1 interface may be composed of the S1-MME interface, the S1-U interface, and the X2 interface that connects the radio base stations.
- the SMF_A230 includes a control unit_D800, a network connection unit_D820, and a storage unit_D840, respectively.
- the network connection unit_D820 and the storage unit_D840 are connected to the control unit_D800 via a bus. Further, the storage unit_D840 stores the context 742.
- the network connection part_D820 of SMF_A230 is a function part for SMF_A230 to connect with AMF_A240, UPF_A235, UDM, and PCF.
- the SMF_A230 can send/receive user data and/or control information to/from the AMF_A240, UPF_A235, UDM, and PCF via the network connection unit_D820.
- Control unit _D800 of PGW_A30 or UPF_A235 is a functional unit for controlling the entire PGW_A30 or UPF_A235, by reading and executing various information and programs stored in the storage unit _D840, PGW_A30 or UPF_A235. Realizes various processes.
- the APN may be identification information that identifies such a gateway, or identification information that identifies an external network such as a DN.
- the APN may be identification information that identifies such a gateway, or identification information that identifies an external network such as a DN.
- DN ID is identification information that identifies the core network_B190 and an external network such as a DN. Further, the DN ID can also be used as information for selecting a gateway such as UPGW_A130 or PF_A235 that connects the core network_B190.
- the DN ID may be identification information that identifies such a gateway, or identification information that identifies an external network such as a DN. If a plurality of gateways connecting the core network_B 190 and the DN are arranged, there may be a plurality of gateways selectable by the DN ID. Further, one gateway may be selected from the plurality of gateways by another method using identification information other than the DN ID.
- a network slice in this embodiment is a logical network that provides specific network capabilities and network characteristics.
- the network slice is also referred to as NW slice.
- the NF configured in the network slice may or may not be a device shared with other network slices.
- UE_A10 and/or devices in the network are NSSAI and/or S-NSSAI and/or UE usage type and/or one or more network slice type IDs and/or one or more NS IDs etc. It can be assigned to one or more network slices based on registration information and/or APN.
- the second NW slice in this embodiment is an NW slice to which another PDU session that can be connected to the DN to which the PDU session belonging to the first NW slice is a connection destination belongs. Note that the first NW slice and the second NW slice may be operated by the same operator or different operators.
- the DCN (Dedicated Core Network) in the present embodiment is a core network dedicated to a specific subscriber type, which is composed of one or more in the core network_A90.
- the DCN for the UE registered as the user of the M2M (Machine to Machine) communication function may be configured in the core network_A 90.
- a default DCN may be configured in the core network_A 90 for a UE that does not have an appropriate DCN.
- at least one or more MME_40 or SGSN_A42 may be arranged in the DCN, and at least one or more SGW_A35 or PGW_A30 or PCRF_A60 may be arranged.
- the DCN may be identified by the DCN ID, or the UE may be assigned to one DCN based on the information such as the UE usage type and/or the DCN ID.
- the UE may set the backoff timer received from the NW as the first timer, may set the timer value by another method, or may set the random value. Further, when the backoff timer received from the NW is configured by a plurality, the UE may manage a plurality of "first timers" according to the plurality of backoff timers, or the UE retains them. Based on the policy, one timer value may be selected from a plurality of backoff timer values received from the NW, set as the first timer, and managed. For example, when receiving two backoff timer values, the UE sets the backoff timer value received from the NW to “first timer #1” and “first timer #2”, respectively, and manages them. To do. In addition, one value may be selected from a plurality of backoff timer values received from the NW based on the policy held by the UE, set as the first timer, and managed.
- the fact that the DNN is not included is called the same information.
- the fact that the S-NSSAI is not included is referred to as the same information.
- the fourth congestion management in the present embodiment is a control signal congestion management targeting the parameters of DNN and S-NSSAI, the network slice selected based on S-NSSAI, and the connection to the DNN.
- the congestion management may be due to the fact that the nature is in a congestion state.
- the fourth congestion management is a congestion management for regulating all connections based on S-NSSAI#A, and, congestion for regulating the connection to DNN#A in all connectivity. It may be management. That is, congestion management for regulating connections to all DNNs via network slices selected by S-NSSAI#A, and for regulating connections to DNN#A in all connectivity. It may be congestion management.
- the tenth behavior in this embodiment is the behavior in which the UE transmits a new PDU session establishment request when the PDU session establishment request is rejected. Specifically, the tenth behavior is that the UE further notifies from the network if the backoff timer received from the network is zero, or if the first PDU session establishment request is rejected for temporary reasons. When there is no back-off timer information element to be set, the behavior may be to send a new PDU session establishment request.
- different congestion management is activated for one or multiple PDU session establishment by the same UE, when multiple timers are provided from the network, the UE is a backoff timer. It may be a behavior of managing the timer based on the priority management rule.
- the first PDU session establishment request for the combination of DNN_1 and slice_1 by the UE is subject to congestion management based on both DNN and slice information, and the UE receives the first timer #1.
- the UE makes a second PDU session establishment request for the combination of DNN_1 and slice_2, is targeted for congestion management based only on the DNN, and receives the first timer #2.
- the first identification process for identifying which congestion management type to apply, and to apply.
- the behavior may be a second identification process for identifying a DNN and/or S-NSSAI associated with congestion management.
- the first identification process at least one or more identification information of the fourth identification information from the first identification information, and / or at least one or more of the 18th identification information from the eleventh identification information. You may identify based on identification information.
- the second identification process at least one of the first identification information to one or more identification information of the fourth identification information, and / or, at least the eleventh identification information to one or more of the eighteen identification information. You may identify based on the identification information of.
- the 16th identification information is information for identifying any of the second congestion management information and the third congestion management information, and the third congestion management for the 16th identification information When only the value corresponding to is settable and at least the 16th identification information is not received.
- the 16th identification information is information for identifying any one of the second congestion management, the third congestion management, and the fourth congestion management, and with respect to the 16th identification information If only the value corresponding to the third congestion management and the value corresponding to the fourth congestion management can be set, and at least the 16th identification information is not received.
- the S-NSSAI corresponding to the second congestion management, the third congestion management, and the fourth congestion management may be determined based on the 17th identification information. And/or the DNN corresponding to the first congestion management, the third congestion management, and the fourth congestion management may be determined based on the first identification information.
- the seventeenth behavior in the present embodiment based on the reception of the control message transmitted by the core network, among the one or more congestion management UE is applying, of the UE to identify the congestion management to stop the application. It may be behavior. For example, the UE may identify the congestion management that stops or changes the application based on the 21st identification information.
- the UE stores the third identification information in the fourth process, and/or the fourth identification information, and/or the thirteenth identification information, etc. as information for identifying congestion management. Therefore, the congestion management in which the identification information matches the thirteenth identification information included in the twenty-first identification information may be identified as the congestion management for stopping the application.
- the third identification information in this embodiment is a PDU session ID (PDU Session ID), and may be information used to identify a PDU session.
- PDU Session ID PDU Session ID
- the 13th identification information may be used as information for identifying the congestion management notified by the NW to the UE based on the rejection of the establishment of the PDU session.
- the UE may store and manage the thirteenth identification information in association with the congestion management executed based on the fifteenth behavior, and use the thirteenth identification information as information for identifying the executed congestion management.
- the information for identifying the congestion management may be configured by a combination of the thirteenth identification information and one or more identification information of the fourteenth to eighteenth identification information.
- the reason value is the congestion management notified by the NW to the UE based on the rejection of the PDU session establishment, the first congestion management, the second congestion management, the third congestion management and the third. It may be information for identifying which of the four congestion management is the congestion management.
- NW May send different values to the UE as reason values.
- UE grasps the meaning of each value transmitted as a reason value in advance, in the fifteenth behavior, based on at least the fifteenth identification information, is the first congestion management, or in the second congestion management. It is also possible to identify whether there is any one of the third congestion management and the fourth congestion management.
- the reason value is the congestion management that the NW notifies the UE based on the rejection of the PDU session establishment, is the second congestion management or the fourth congestion management, the first congestion management or the third congestion It may be information for identifying whether it is management.
- NW is to send a different value to the UE as a reason value.
- UE grasps the meaning of each value transmitted as a reason value in advance, in the fifteenth behavior, based on at least the fifteenth identification information, the second congestion management or fourth congestion management, Whether it is the first congestion management or the third congestion management may be identified.
- the Indication information does not necessarily need a value corresponding to each of the congestion managements to be identified. For example, if the value of Indication information is assigned in association with each of the congestion managements except the congestion management A, the value of the Indication information does not necessarily have to be set for the congestion management A. In this case, the NW and the UE can identify the first congestion management by not transmitting and receiving the Indication information.
- the congestion management A may be any one of the first to fourth congestion management.
- the NW may indicate the congestion management applied by the NW based on the 17th identification information.
- the NW may indicate which of the first congestion management to the fourth congestion management has been applied, based on the 17th identification information.
- the NW may indicate the DNN and/or S-NSSAI to be subjected to congestion management applied to the UE based on the transmission of the PDU session rejection message, based on the 17th identification information. For example, when the 17th identification information is only DNN#1, it may indicate that the first congestion management targeting DNN#1 is applied. If the 17th identification information is only S-NSSAI#1, it may indicate that the second congestion management targeting S-NSSAI#1 is applied. If the 17th information is composed of DNN#1 and S-NSSAI#1, a third congestion management targeting at least one of DNN#1 and/or S-NSSAI#1, or a fourth It may indicate that the congestion management is applied.
- UE_A10 transmits a Registration Complete message to AMF_A240 based on the reception of the registration acceptance message (S1010).
- the registration completion message may be transmitted by including the SM message such as the PDU session establishment completion message, or by including the SM message. , May indicate to complete the procedure for SM.
- the registration completion message may be transmitted as a response message to the registration acceptance message.
- the fourth condition determination may be executed based on whether the AMF_A240 has received the SM, or may be executed based on whether the registration request message includes the SM message. For example, the fourth condition determination may be true if the AMF_A240 receives the SM and/or the SM message is included in the registration request message, if the AMF_A240 does not receive the SM, and / Or it may be false if the SM message was not included in the registration request message.
- the condition that determines whether the fourth condition determination is true or false is not limited to the condition described above.
- UE_A10 uses the N1 interface to send a PDU session establishment request message to AMF_A240 in core network_B190 via NR node_A122 (S1100).
- AMF_A receives the PDU session establishment request message and executes the third condition determination.
- the third condition determination is for AMF_A to determine whether or not to accept the request of UE_A10.
- AMF_A determines whether the fifth condition determination is true or false.
- the core network_B starts processing #1 in the core network when the third condition determination is true (S1101), and when the third condition determination is false, the procedure (B) in this procedure is performed. Start. The steps when the third condition judgment is false will be described later.
- the process #1 in the core network may be SMF selection by AMF_A in the core network_B 190 and/or transmission/reception of a PDU session establishment request message between AMF_A and SMF_A.
- AMF_A240 is each identification information acquired based on the reception of the PDU session establishment request message, and / or subscriber information, and / or network capability information, and / or operator policy, and / or network
- the routing destination SMF_A 230 may be selected based on the state and/or the context that the AMF_A 240 already holds.
- the SMF_A230 in core network_B190 receives the PDU session establishment request message and executes the third condition determination.
- the third condition determination is for the SMF_A230 to determine whether to accept the request of the UE_A10. In the third condition determination, the SMF_A230 determines whether the third condition determination is true or false.
- the SMF_A230 starts the procedure (A) in this procedure when the third condition determination is true, and starts the procedure (B) in this procedure when the third condition determination is false. The steps when the third condition judgment is false will be described later.
- the SMF_A230 sends a session establishment request message to the selected UPF_A235 based on the 11th condition determination and/or the completion of the PDU session establishment authentication approval procedure, and starts the procedure (A) in this procedure. To do. Note that the SMF_A 230 may start the procedure (B) in this procedure based on the completion of the PDU session establishment authentication approval procedure, without starting the procedure (A) in this procedure.
- the SMF_A230 may perform the address assignment of the address assigned to the UE_A10 based on the reception of the PDU session establishment request message and/or the selection of the UPF_A235 and/or the reception of the session establishment response message.
- the SMF_A 230 may perform the address assignment of the address assigned to the UE_A 10 during the PDU session establishment procedure or after the PDU session establishment procedure is completed.
- the SMF_A230 may perform address allocation during the PDU session establishment procedure or may send the allocated address to UE_A10. Furthermore, SMF_A230, when assigning an IPv4 address using DHCPv4 or DHCPv6 or SLAAC (Stateless Address Autoconfiguration), and/or an IPv6 address, and/or an IPv6 prefix, after the PDU session establishment procedure, the address may be assigned, The assigned address may be sent to UE_A10.
- the address allocation performed by SMF_A230 is not limited to these.
- the SMF_A230 sends a PDU session establishment acceptance message to the AMF_A240 using the N11 interface
- the AMF_A240 receiving the PDU session establishment acceptance message sends a PDU session establishment acceptance message to the UE_A10 using the N1 interface. ..
- the PDU session establishment acceptance message may be a PDN connection acceptance (PDN connectivity accept) message. Further, the PDU session establishment acceptance message may be a NAS message transmitted and received on the N11 interface and the N1 interface.
- the PDU session establishment acceptance message is not limited to this, and may be a message indicating that the establishment of the PDU session has been accepted.
- the PDU session establishment complete message may be a PDN connection complete message or a default EPS bearer context activation accept message. Further, the PDU session establishment completion message may be a NAS message transmitted/received on the N1 interface and the N11 interface. Further, the PDU session establishment completion message may be a response message to the PDU session establishment acceptance message, and is not limited to this, and may be a message indicating that the PDU session establishment procedure is completed.
- the SMF_A230 determines which identification information, out of the 11th to 18th identification information, is to be included in the PDU session establishment rejection message, the received identification information, and/or network capability information, and/or operator policy. Policy and/or network status.
- the core network_B 190 notifies the congestion management to be applied to UE_A10 by sending the PDU session rejection message.
- the core network _B190 to apply the congestion management to the UE_A10, and / or, indicating that to perform the congestion management to UE_A10, and / or, information to identify the type of congestion management to be applied.
- And/or information identifying the target of congestion management such as DNN and/or S-NSSAI corresponding to the congestion management to be applied, and/or notifying the value of the timer associated with the congestion management to be applied. Good.
- the fourth process may be a process in which UE_A10 recognizes the matter indicated by SMF_A230. Furthermore, the fourth process may be a process in which the UE_A10 stores the received identification information as a context, or may be a process of transferring the received identification information to an upper layer and/or a lower layer. .. Furthermore, the fourth process may be a process in which the UE_A10 recognizes that the request for this procedure is rejected.
- the fourth process is UE_A10 is a process of setting the value indicated by the 14th identification information to the first timer value. Alternatively, it may be a process of starting a first timer having a timer value set. Furthermore, when the UE_A10 receives the eleventh identification information, the fourth process may be a process of executing one or more of the first to eleventh behaviors.
- the fourth process UE_A10, information identifying the NW slice included in the 18th identification information, and the 18th identification information.
- the process may be the process of executing the twelfth behavior based on the network slice association rule included in or the UE_A10 holds the network slice association rule set in advance.
- the fourth process may be a process in which the UE_A10 restarts this procedure after a certain period of time, or a process in which the request of the UE_A10 transits to a limited or restricted state.
- one or more of the ninth to fifteenth behaviors may be executed with the start or completion of any of the above-described processes.
- UE_A10 may transit to the first state upon completion of the fourth processing.
- UE_A10 may stop applying congestion management, which is identified based on the control information transmitted and received by this procedure.
- the core network_B190 stops the application of the congestion management that can be identified using these control information by leading this procedure and further transmitting the control message and control information of this procedure to the UE_A10.
- UE_A10 can be notified to do so.
- the fifth process may be a process in which the UE_A10 recognizes a matter indicated by the core network_B190, or a process in which the request of the core network_B190 is recognized. Further, the fifth process, UE_A10 may be a process of storing the received identification information as a context, or may be a process of transferring the received identification information to an upper layer, and/or a lower layer. ..
- the 5th processing may be the 16th behavior. Specifically, for example, it may be a process of stopping one or a plurality of timers executed based on the above-mentioned fourth process.
- UE_A10 when changing the PLMN, when counting the back-off timer associated with the first congestion management for the specific DNN and the PLMN before the change, or before the change with the specific DNN
- the backoff timer associated with the first congestion management for the PLMN is deactivated, the backoff timer count associated with the first congestion management for the specific DNN and the changed PLMN is further counted. If the backoff timer associated with the first congestion management for the specific DNN and the changed PLMN is not deactivated, the UE_A10 determines that the specific It may be configured to be able to send a PDU session establishment request message using DNN. Further, based on this setting, UE_10 may send a PDU session establishment request message using this specific DNN.
- UE_A10 may continue counting until the timer expires, without stopping the backoff timer that was counting. Alternatively, the UE_A 10 may continue to hold the deactivated backoff timer in the deactivated state.
- the processing associated with the change of the PLMN described above whether to perform the same processing or a different processing regardless of whether the first congestion management is for a specific DNN or No DNN is determined in advance in UE_A10. Although it may be set based on the set information, it may be determined depending on whether or not the second PLMN after the change is an equivalent PLMN to the first PLMN before the change. For example, when the second PLMN after the change is not the equivalent PLMN to the first PLMN before the change, the same process may be applied. Also, when the second PLMN after the change is an equivalent PLMN to the first PLMN before the change, different processing may be executed.
- UE_A10 when changing the PLMN, start the procedure for session management including the PDU session establishment request, and / or set to be able to send and receive SM messages, Alternatively, it may be set to be prohibited.
- UE_A10 receives the 11th identification information at the time of congestion management application, further, the 11th identification information, the start of the procedure for session management including a PDU session establishment request, and / or SM message. If the information that allows the sending and receiving of the message is included, UE_A10 can start the procedure for session management including the PDU session establishment request and/or send and receive the SM message when the PLMN is changed. May be set as follows.
- the application target of congestion management is traffic that becomes Home-routed, or in the case of including traffic that becomes Home-routed, start of a procedure for session management including a PDU session establishment request, and/or SM
- the eleventh identification information may be controlled to include information indicating that transmission/reception of a message is prohibited.
- Local breakout indicates the form of roaming architecture and/or signal traffic route, and the form in which the anchor point and SMF are in the roaming destination PLMN.
- Home routed indicates a form of roaming architecture and/or a signal traffic route, and a form in which the anchor point is in the home PLMN.
- the information indicating that the procedure for session management including the PDU session establishment request and/or the permission to send/receive the SM message is permitted is the information indicating that the signal traffic route is the Local breakout. May be similar to.
- the eleventh identification information described above permits the start of a procedure for session management including a PDU session establishment request and/or the transmission/reception of an SM message when the PLMN is changed. Information may be included.
- UE_A10 receives the 11th identification information at the time of congestion management application, further, the 11th identification information, the start of the procedure for session management including a PDU session establishment request, and / or SM message. If the information that allows the sending and receiving of the message is included, UE_A10 can start the procedure for session management including the PDU session establishment request and/or send and receive the SM message when the PLMN is changed. May be set as follows.
- the application target of congestion management is traffic that becomes Home-routed, or in the case of including traffic that becomes Home-routed, start of a procedure for session management including a PDU session establishment request, and/or SM
- the eleventh identification information may be controlled so as not to include information indicating that the transmission and reception of the message is permitted.
- UE_A10 receives the 11th identification information at the time of congestion management application, further, the 11th identification information, the start of the procedure for session management including a PDU session establishment request, and / or SM message. If the information for prohibiting the sending and receiving of the message is not included, UE_A10 can start the procedure for session management including the PDU session establishment request and/or send and receive the SM message when the PLMN is changed. May be set as follows.
- UE_A10 receives the 11th identification information at the time of applying congestion management, and further, in the 11th identification information, starts a procedure for session management including a PDU session establishment request, and/or transmits/receives an SM message.
- UE_A10 is set to prohibit the start of the procedure for session management including the PDU session establishment request and/or the transmission/reception of SM messages. May be.
- the information indicating that the procedure for session management including the PDU session establishment request in the 11th identification information and/or prohibiting the transmission/reception of the SM message is the signal traffic route Home- It may be similar to the information indicating that the traffic is routed or includes Home-routed traffic.
- the congestion management application target is traffic that is Local breakout
- information indicating that the procedure for session management including the PDU session establishment request and/or prohibiting the transmission/reception of SM messages is prohibited. May be controlled not to be included in the eleventh identification information. ..
- the information indicating that the procedure for the session management including the PDU session establishment request and/or prohibiting the transmission/reception of the SM message is information indicating that the signal traffic route is the Local breakout. May be similar to.
- the eleventh identification information is the first to fourth types of congestion management, a specific DNN, and/or a specific S-NSSAI, and/or No DNN and / Or, regardless of No-S-NSSAI, it may be information set for each congestion management.
- the core network_B190 each time the congestion management applied to the UE_A10 is notified by transmitting the PDU session rejection message, whether to include the eleventh identification information, and the information to be included in the eleventh information is determined. You may. Furthermore, the UE_A10 that receives such a PDU session rejection message changes the PLMN based on the presence or absence of the eleventh identification information and/or the information included in the eleventh information, as in the specific examples 1 to 3 above. The behavior of time may be determined.
- the deactivation of the back-off timer may mean that the back-off timer and/or the congestion management associated with the back-off timer has transitioned to the deactivated state. .. Note that the UE_A10 may deactivate the backoff timer and/or the congestion management associated with the backoff timer when receiving the timer value indicating deactivation.
- UE_A10 is a back-off timer and / or 14th identification information indicating deactivating congestion management associated with the back-off timer, and the fifteenth identification information is received from the NW, The backoff timer for the congestion management of the type indicated by the fifteenth identification information may be deactivated.
- the congestion management application may continue until the terminal is turned off or the USIM is taken out. Further, the processing regulated at that time may be the same as the processing regulated when the back-off timer is counting according to each congestion management type.
- the processing of UE_A10 and NW accompanying the change of PLMN described so far has been described with respect to the first congestion management, and/or the backoff timer for the first congestion management, but the second congestion management, Similar processing may be performed for the third congestion management and the fourth congestion management.
- the PDU session establishment request message whose transmission is restricted or permitted may be a message according to each type.
- the congestion management and/or the back-off timer associated with the congestion management may be associated with the PLMN regardless of the type of congestion management.
- any congestion management and/or backoff timer associated with congestion management may be configured to be associated with the PLMN. Therefore, for the first congestion management, the second congestion management, and the third congestion management, the congestion management and / or backoff timer associated with the congestion management is set to be associated with the PLMN. Good. Alternatively, for the first congestion management, the second congestion management, and the third congestion management for No DNN, the congestion management and/or the backoff timer associated with the congestion management may be associated with the PLMN. The configured and first congestion management for a particular DNN may not be associated with the PLMN.
- the processing when each congestion management is associated with the PLMN, and/or the processing related to the back-off timer corresponding to each congestion management is the above-mentioned processing for the first congestion management associated with the PLMN.
- the first congestion management in the description of the processing related to the back-off timer corresponding to the first congestion management associated with the PLMN described above is changed to congestion management for each of the second to fourth types. It may be replaced.
- the process when each congestion management is not associated with the PLMN, and/or the process related to the back-off timer corresponding to each congestion management is the above-mentioned first congestion that is not associated with the PLMN.
- the first congestion management in the description of the processing for management and/or the processing related to the back-off timer corresponding to the first congestion management not associated with the PLMN described above is divided into second to fourth types. It may be replaced with the congestion management of.
- the PDU session establishment request message whose transmission is restricted or allowed may be a message according to each type.
- UE_A10 when it is expressed that NW is transmitted to UE_A10, it may be that AMF or SMF is transmitted to UE_A10, when UE_A10 is expressed as transmitting to NW, UE_A10 is AMF. Alternatively, it may be sent to SMF. Furthermore, when NW expresses to receive from UE_A10, AMF or SMF may be received from UE_A10, and when UE_A10 expresses to receive from NW, UE_A10 receives from AMF or SMF. May be
- the fifteenth identification information is information indicating one or more reason values (Cause Value) at which this procedure in which the NW notifies the UE is rejected for reasons other than the application of congestion management. ..
- the 14th identification information is information indicating the value of the backoff timer.
- the eleventh identification information is information indicating re-attempt (Re-attempt) information.
- the back-off timer may be the first timer used in the third congestion management described in the present embodiment, or is not limited to this as long as it is a timer of the mobile communication system that can be recognized by the UE.
- the SM backoff timer is used.
- DNN information when DNN information is not included in the PDU session establishment procedure, it is expressed as "noDNN” in order to distinguish it from control signal management when DNN information is included.
- S-NSSAI information when S-NSSAI information is not included in the PDU session establishment procedure, it is expressed as "no-S-NSSAI" to distinguish it from control signal management when S-NSSAI information is included.
- SMF_A230 or AMF_A240 indicates the SM back indicated by the 14th identification information when the rejection reason value indicated by the 15th identification information is other than Insufficient resources and/or Insufficient resources for specific slice and DNN and/or Insufficient resources for specific slice.
- a PDU session establishment rejection message (S1122) may be sent to UE_A10 with an off timer.
- the UE_A10 may perform the first procedure example described below when the SM backoff timer value is not zero or invalid.
- UE_A10 is a PDU session until the SM backoff timer for PLMN and/or DNN and/or noS-NSSAI has expired, or terminal power is turned on/off, or USIM (Universal Subscriber Identity Module) is removed/inserted. Reconnection using another PDU session establishment request message for the DNN and noS-NSSAI parameters transmitted in the establishment request message (1011) may be suppressed.
- USIM Universal Subscriber Identity Module
- UE_A10 is another PDU that targets the parameters of noDNN and noS-NSSAI sent in the PDU session establishment request message (1011) until the terminal power is turned on/off or the USIM (Universal Subscriber Identity Module) is removed/inserted. Reconnection using the session establishment request message may be suppressed.
- USIM Universal Subscriber Identity Module
- UE_A10 stops when the SM backoff timer associated with the noDNN and S-NSSAI transmitted in the PDU session establishment request message (1011) is activated, and in the PDU session establishment request message (1011).
- Another PDU session establishment request message may be transmitted using the transmitted noDNN and S-NSSAI.
- UE_A10 stops when the SM backoff timer associated with the noDNN and noS-NSSAI transmitted in the PDU session establishment request message (1011) is activated, and the PDU session establishment request message (1011).
- Another PDU session establishment request message may be sent by using the noDNN and noS-NSSAI sent in.
- UE_A10 does not stop the running SM backoff timer when changing PLMN or changing from N1 mode to S1 mode. This is because, for example, when returning to the original PLMN from the PLMN change destination by changing the PLMN, the backoff timer started in the original PLMN continues to be activated, and the control signal management applied in the original PLMN is continued. This is because it is applied.
- UE_A10 is associated with the SM backoff timer activated in the original PLMN, if the SM backoff timer for the S-NSSAI and noDNN activated in the original PLMN is not activated at the PLMN change destination.
- a PDU session establishment request message using the same S-NSSAI and noDNN as the existing S-NSSAI and noDNN may be transmitted.
- UE_A10 changes the PDU session type used in the PDU session establishment request message (1011), turns the terminal power on/off, or inserts/removes the USIM (Universal Subscriber Identity Module), and then the PDU session establishment request message (1011). It may be a procedure that does not automatically send reconnection using another PDU session establishment request message that targets the DNN and noS-NSSAI parameters sent in.
- USIM Universal Subscriber Identity Module
- UE_A10 if the reason value indicated by the fifteenth identification information is PDU session does not exist exist, different from the first to third and fifth procedure examples. You may implement the procedure example of 6.
- UE_A10 may send an initial ("initial request") PDU session establishment request message for the DNN and S-NSSAI parameters sent in the PDU session establishment request message (1011).
- UE_A10 may also send an initial ("initial request") PDU session establishment request message for the noDNN and noS-NSSAI parameters sent in the PDU session establishment request message (1011).
- another PDU session establishment request message may be transmitted based on the re-attempt information indicated by the 11th identification information. Specifically, if the connection in the uniform PLMN is allowed in the re-attempt information, UE_A10 is another PDU session for the DNN and S-NSSAI parameters sent in the PDU session establishment request message (1011). The establishment request message may be transmitted by the equivalent PLMN.
- UE_A10 when the connection with the uniform PLMN is permitted by the re-attempt information, UE_A10 sends another PDU session establishment request targeting the DNN and no S-NSSAI parameters sent in the PDU session establishment request message (1011).
- the message may be sent by the equivalent PLMN.
- processing based on the reception of the PDU session establishment rejection message described above may be the processing example described below. It should be noted that this processing example may be processing executed when the timer value is included in the PDU session establishment rejection message.
- the reason value related to congestion management is a reason value indicating that resources are insufficient (Insufficient resources), and/or that resources for a specific slice are insufficient (Insufficient resourcesforforspecificspecificslice). It may be a reason value that indicates and/or a reason value that indicates that resources for a particular slice and DNN are insufficient (Insufficient resource for for specific slice and DNN).
- the fifteenth identification information is information indicating one or more reason values (Cause Value) that the NW notifies the UE of this procedure being rejected due to the application of congestion management.
- the 14th identification information is information indicating the value of the backoff timer.
- the eleventh identification information is information indicating re-attempt (Re-attempt) information.
- the 14th identification information indicates the backoff timer. May be sent to send a PDU session establishment rejection message (S1122) to UE_A10.
- the first congestion management associated with a particular DNN may be DNN-based congestion management.
- the NW receives a UE-led session management request using DNN#A from the UE_A10 and the NW detects congestion for a specific DNN, for example, DNN#A.
- the congestion management may be applied by the NW to the UE_A10 based on the message rejecting the session management request initiated by the UE.
- the UE_A10 starts counting the backoff timer corresponding to the first congestion management received from the NW, and continues to DNN#A until the backoff timer expires. It may be set not to transmit the session management request initiated by the UE using.
- using the DNN may mean including DNN information in a UE-led session management request such as a PDU session establishment request message.
- the UE_A10 when changing the system, is counting the first congestion management backoff timer associated with the specific DNN, or the first congestion associated with the specific DNN. If the administrative backoff timer is deactivated, UE_A10 may be configured to perform ESM procedures in S1 mode with an APN equivalent to this particular DNN. Therefore, based on this setting, the UE_10 may send the PDN connectivity establishment request message using this specific APN.
- UE_A10 may continue counting until the timer expires, without stopping the backoff timer that was counting. Alternatively, the UE_A 10 may continue to hold the deactivated backoff timer in the deactivated state.
- UE_A10 is counting the third congestion management backoff timer associated with [S-NSSAI, DNN] when changing the system, or [S-NSSAI, no DNN]. ] If the third congestion management backoff timer associated with] is deactivated, UE_A10 may be configured in S1 mode to perform ESM procedures that do not include APN. Therefore, UE_10 may send a PDN connectivity establishment request message that does not include an APN based on this setting.
- the NW takes the default S-initiated by the NW even if the S-NSSAI and DNN are not included in the UE-led session management request.
- NSSAI and default DNN may be selected and subject to congestion management.
- the NW receives a session management request initiated by the UE using [no S-NSSAI, no DNN] from the UE_A10, and the NW receives a combination of the default DNN and the default S-NSSAI. If all the congestion is detected, the congestion management may be applied by the NW to the UE_A10 based on the message rejecting the session management request initiated by the UE.
- UE_A10 may perform the 25th procedure example described below as the 6th processing example in this embodiment.
- the processing when UE_A10 changes the system in the state where the third congestion management associated with a specific [S-NSSAI, DNN] is applied will be described.
- the third congestion management backoff timer associated with a particular [S-NSSAI, DNN] is running, or the third congestion management backoff associated with a particular [S-NSSAI, DNN].
- the processing when the UE_A10 changes the system when the off timer is deactivated will be described.
- UE_A10 may perform the 34th procedure example described below as the 6th processing example in this embodiment.
- the third congestion management for a specific [noS-NSSAI, DNN] may be applied to different systems.
- UE_A10 may perform the 35th procedure example described below as the 6th processing example in this embodiment.
- UE_A10 may continue counting until the timer expires, without stopping the backoff timer that was counting. Alternatively, the UE_A 10 may continue to hold the deactivated backoff timer in the deactivated state.
- the UE_A10 may perform the 36th procedure example described below as the sixth processing example in the present embodiment.
- UE_A10 may continue counting until the timer expires, without stopping the backoff timer that was counting. Alternatively, the UE_A 10 may continue to hold the deactivated backoff timer in the deactivated state.
- UE_A10 when changing the system, when counting the third congestion management backoff timer associated with [no S-NSSAI, no DNN], or [no S-NSSAI, When the third congestion management backoff timer associated with [no DNN] is deactivated, UE_A10 may be configured to suppress the execution of ESM procedures that do not include APN in S1 mode. Therefore, based on this setting, the UE_10 may be prevented from transmitting the PDN connectivity establishment request message that does not include the APN.
- the third congestion management for a specific [noS-NSSAI,noDNN] may be applied to different systems.
- the processing when UE_A10 changes the system in the state where the second congestion management associated with a specific S-NSSAI is applied will be described.
- the second congestion management backoff timer associated with a particular S-NSSAI has been activated, or the second congestion management backoff timer associated with a particular S-NSSAI has been deactivated.
- the process when UE_A10 changes the system will be described.
- this second congestion management is referred to as “second congestion management for a specific S-NSSAI" here. Further, such a backoff timer corresponding to the second congestion management is referred to as a “second congestion management backoff timer associated with a specific S-NSSAI”.
- UE_A10 is a system change, when performing a second congestion management backoff timer count associated with a particular S-NSSAI, or, is associated with a particular S-NSSAI.
- the UE_A10 may perform the ESM procedure using any APN or the ESM procedure not including the APN in the S1 mode.
- the NW selects the default S-NSSAI and initiates congestion even if the UE-led session management request does not include S-NSSAI information. It may be managed.
- the second congestion management is a UE-led session management request that does not use S-NSSAI information is received from NW UE_A10, if congestion for the default S-NSSAI in NW is detected, UE The congestion management may be applied to the UE_A10 by the NW based on the message that rejects the initiative session management request.
- UE_A10 when changing the system, when counting the second congestion management backoff timer associated with NoS-NSSAI, or the second associated with NoS-NSSAI.
- the UE_A10 may perform an ESM procedure using any APN or may perform an ESM procedure not including the APN in the S1 mode.
- UE_A10 may perform different processing depending on whether the first congestion management is for a specific DNN or No DNN.
- the UE_A10 when changing the system, is counting the back-off timer associated with the first congestion management for the specific DNN, or the back-up timer associated with the first congestion management for the specific DNN.
- the UE_A10 may be configured in S1 mode not to use the APN equivalent to this particular DNN to send the PDN connectivity establishment request message. Therefore, based on this setting, the UE_10 may restrict the PDN connectivity establishment request message using the APN equivalent to this specific DNN.
- UE_A10 when changing the system, when counting the backoff timer associated with the third congestion management for [S-NSSAI, DNN] or [no S-NSSAI, DNN], or [S -NSSAI, DNN] or [no S-NSSAI, DNN], if the backoff timer associated with the third congestion management is deactivated, UE_A10 is in S1 mode and APN equivalent to this particular DNN.
- the PDN connectivity establishment request message may be set not to be transmitted using the. Therefore, based on this setting, the UE_10 may restrict the PDN connectivity establishment request message using the APN equivalent to this specific DNN.
- UE_A10 may continue counting until the timer expires, without stopping the backoff timer that was counting. Alternatively, the UE_A 10 may continue to hold the deactivated backoff timer in the deactivated state.
- UE_A10 may continue counting until the timer expires, without stopping the backoff timer that was counting. Alternatively, the UE_A 10 may continue to hold the deactivated backoff timer in the deactivated state.
- the program for realizing the functions of the embodiments according to the present invention may be recorded in a computer-readable recording medium. It may be realized by causing a computer system to read and execute the program recorded in this recording medium.
- the “computer system” here is a computer system built in the apparatus and includes an operating system and hardware such as peripheral devices.
- the “computer-readable recording medium” is a semiconductor recording medium, an optical recording medium, a magnetic recording medium, a medium that dynamically holds a program for a short time, or another computer-readable recording medium. Is also good.
- the present invention is not limited to the above embodiment. Although one example of the device is described in the embodiment, the present invention is not limited to this, and a stationary or non-movable electronic device installed indoors or outdoors, such as an AV device or a kitchen device. It can be applied to terminal devices or communication devices such as cleaning/laundry equipment, air conditioning equipment, office equipment, vending machines, and other household appliances.
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Abstract
Description
本実施形態における移動通信システムの概略について、図1、図2、図3、図4を用いて説明する。図2は、図1の移動通信システムのうち、アクセスネットワークの詳細を記載した図である。図3は、図1の移動通信システムのうち、主にコアネットワーク_A90の詳細を記載した図である。図4は、図1の移動通信システムのうち、主にコアネットワーク_B190の詳細を記載した図である。図1に示すように、本実施形態における移動通信システム1は、端末装置(ユーザ装置、移動端末装置とも称する)UE(User Equipment)_A10、アクセスネットワーク(AN; Access Network)_A、アクセスネットワーク_B、コアネットワーク(CN; Core Network)_A90、コアネットワーク_B190、パケットデータネットワーク(PDN; Packet Data Network)_A6、及びデータネットワーク(DN; Data Network)_A5により構成されている。尚、アクセスネットワーク_Aとコアネットワーク_A90の組み合わせをEPS(Evolved Packet System;4G移動通信システム)と称してもよいし、アクセスネットワーク_Bとコアネットワーク_B190とUE_A10の組み合わせを5GS(5G System;5G移動通信システム)と称してもよいし、5GSとEPSの構成はこれらに限らなくてもよい。尚、簡単化のため、コアネットワーク_A90、コアネットワークB又はこれらの組み合わせをコアネットワークとも称することがあり、アクセスネットワーク_A、アクセスネットワーク_B又はこれらの組み合わせをアクセスネットワーク又は無線アクセスネットワークとも称することがあり、DN_A5、PDN_A6又はこれらの組み合わせをDNとも称することがある。
以下、各装置の構成について説明する。尚、下記各装置及び各装置の各部の機能の一部又は全部は、物理的なハードウェア上で動作するものでもよいし、汎用的なハードウェア上に仮想的に構成された論理的なハードウェア上で動作するものでもよい。
まず、UE_A10の装置構成例を、図5に示す。図5に示すように、UE_A10は、制御部_A500、送受信部_A520、記憶部_A540で構成される。送受信部_A520及び記憶部_A540は、制御部_A500とバスを介して接続されている。また、送受信部_A520には、外部アンテナ410が接続されている。
次に、eNB_A45及びNR node_A122の装置構成例を、図6に示す。図6に示すように、eNB_A45及びNR node_A122は、制御部_B600、ネットワーク接続部_B620、送受信部_B630、記憶部_B640で構成されている。ネットワーク接続部_B620、送受信部_B630及び記憶部_B640は、制御部_B600とバスを介して接続されている。また、送受信部_B630には、外部アンテナ510が接続されている。
次に、MME_A40又はAMF_A240の装置構成例を、図7に示す。図7に示すように、MME_A40又はAMF_A240は、制御部_C700、ネットワーク接続部_C720、記憶部_C740で構成されている。ネットワーク接続部_C720及び記憶部_C740は、制御部_C700とバスを介して接続されている。また、記憶部_C740は、コンテキスト642を記憶している。
次に、SMF_A230の装置構成例を、図8に示す。図8に示すように、SMF_A230は、それぞれ、制御部_D800、ネットワーク接続部_D820、記憶部_D840で構成されている。ネットワーク接続部_D820及び記憶部_D840は、制御部_D800とバスを介して接続されている。また、記憶部_D840は、コンテキスト742を記憶している。
次に、PGW_A30又はUPF_A235の装置構成例を、図8に示す。図8に示すように、PGW_A30又はUPF_A235は、それぞれ、制御部_D800、ネットワーク接続部_D820、記憶部_D840で構成されている。ネットワーク接続部_D820及び記憶部_D840は、制御部_D800とバスを介して接続されている。また、記憶部_D840は、コンテキスト742を記憶している。
次に、上記各装置の記憶部で記憶される各情報について、説明する。
次に、本実施形態における初期手続きの詳細手順を説明する前に、重複説明を避ける為、本実施形態で特有の用語や、各手続きに用いる主要な識別情報を予め説明する。
尚、本挙動によってUEが禁止される処理は、PDUセッション確立要求を含むセッションマネジメントのための手続きの開始、及び/又はSMメッセージの送受信であってよい。
・少なくとも、第15の識別情報が、第1の輻輳管理に対応する値である場合。
・少なくとも、第16の識別情報が、第1の輻輳管理に対応する値である場合。
・少なくとも、第14の識別情報に、第1の輻輳管理を示す情報が含まれている場合。
・少なくとも、第17の識別情報にDNNのみが含まれ、S-NSSAIが含まれない場合。
・第16の識別情報が第1の輻輳管理と第2の輻輳管理の内のいずれかの識別情報を識別するための情報であり、且つ、第16の識別情報に対して第2の輻輳管理に対応する値のみ設定可能な情報である場合に、少なくとも、第16の識別情報を受信しなかった場合。
・第16の識別情報が第1の輻輳管理と第4の輻輳管理の内のいずれかの識別情報を識別するための情報であり、且つ、第16の識別情報に対して第4の輻輳管理に対応する値のみ設定可能な情報である場合に、少なくとも、第16の識別情報を受信しなかった場合。
・第16の識別情報が第1の輻輳管理と第2の輻輳管理と第4の輻輳管理の内のいずれかの識別情報を識別するための情報であり、且つ、第16の識別情報に対して第2の輻輳管理に対応する値と、第4の輻輳管理に対応する値のみ設定可能な情報である場合に、少なくとも、第16の識別情報を受信しなかった場合。
・少なくとも、第15の識別情報が、第2の輻輳管理に対応する値である場合。
・少なくとも、第16の識別情報が、第2の輻輳管理に対応する値である場合。
・少なくとも、第14の識別情報に、第2の輻輳管理を示す情報が含まれている場合。
・少なくとも、第17の識別情報にS-NSSAIのみが含まれ、DNNが含まれない場合。
・第16の識別情報が第1の輻輳管理と第2の輻輳管理の内のいずれかの識別情報を識別するための情報であり、且つ、第16の識別情報に対して第1の輻輳管理に対応する値のみ設定可能な情報である場合に、少なくとも第16の識別情報を受信しなかった場合。
・第16の識別情報が第2の輻輳管理と第3の輻輳管理の内のいずれかの識別情報を識別するための情報であり、且つ、第16の識別情報に対して第3の輻輳管理に対応する値のみ設定可能な情報である場合に、少なくとも第16の識別情報を受信しなかった場合。
・第16の識別情報が第2の輻輳管理と第3の輻輳管理と第4の輻輳管理の内のいずれかの識別情報を識別するための情報であり、且つ、第16の識別情報に対して第3の輻輳管理に対応する値と、第4の輻輳管理に対応する値のみ設定可能な情報である場合に、少なくとも第16の識別情報を受信しなかった場合。
・少なくとも、第15の識別情報が、第3の輻輳管理に対応する値である場合。
・少なくとも、第16の識別情報が、第3の輻輳管理に対応する値である場合。
・少なくとも、第14の識別情報に、第3の輻輳管理を示す情報が含まれている場合。
・少なくとも、第15の識別情報が、第3の輻輳管理を含み、且つ第4の輻輳管理を含まない、複数の輻輳管理に対応する値であり、第17の識別情報にS-NSSAIとDNNが含まれている場合。
・第16の識別情報が第3の輻輳管理と第4の輻輳管理の内のいずれかの識別情報を識別するための情報であり、且つ、第16の識別情報に対して第4の輻輳管理に対応する値のみ設定可能な情報である場合に、少なくとも第16の識別情報を受信しなかった場合。
・第16の識別情報が第2の輻輳管理と第3の輻輳管理の内のいずれかの識別情報を識別するための情報であり、且つ、第16の識別情報に対して第2の輻輳管理に対応する値のみ設定可能な情報である場合に、少なくとも第16の識別情報を受信しなかった場合。
・第16の識別情報が第2の輻輳管理と第3の輻輳管理と第4の輻輳管理の内のいずれかの識別情報を識別するための情報であり、且つ、第16の識別情報に対して第2の輻輳管理に対応する値と、第4の輻輳管理に対応する値のみ設定可能な情報である場合に、少なくとも第16の識別情報を受信しなかった場合。
・少なくとも、第15の識別情報が、第4の輻輳管理に対応する値である場合。
・少なくとも、第16の識別情報が、第4の輻輳管理に対応する値である場合。
・少なくとも、第14の識別情報に、第4の輻輳管理を示す情報が含まれている場合。
・少なくとも、第15の識別情報が、第4の輻輳管理を含み、且つ第3の輻輳管理を含まない、複数の輻輳管理に対応する値であり、第17の識別情報にS-NSSAIとDNNが含まれている場合。
・第16の識別情報が第3の輻輳管理と第4の輻輳管理の内のいずれかの識別情報を識別するための情報であり、且つ、第16の識別情報に対して第3の輻輳管理に対応する値のみ設定可能な情報である場合に、少なくとも第16の識別情報を受信しなかった場合。
・第16の識別情報が第2の輻輳管理と第4の輻輳管理の内のいずれかの識別情報を識別するための情報であり、且つ、第16の識別情報に対して第2の輻輳管理に対応する値のみ設定可能な情報である場合に、少なくとも第16の識別情報を受信しなかった場合。
・第16の識別情報が第1の輻輳管理と第4の輻輳管理の内のいずれかの識別情報を識別するための情報であり、且つ、第16の識別情報に対して第1の輻輳管理に対応する値のみ設定可能な情報である場合に、少なくとも第16の識別情報を受信しなかった場合。
・第16の識別情報が第2の輻輳管理と第3の輻輳管理と第4の輻輳管理の内のいずれかの識別情報を識別するための情報であり、且つ、第16の識別情報に対して第2の輻輳管理に対応する値と、第3の輻輳管理に対応する値のみ設定可能な情報である場合に、少なくとも第16の識別情報を受信しなかった場合。
・第16の識別情報が第1の輻輳管理と第2の輻輳管理と第4の輻輳管理の内のいずれかの識別情報を識別するための情報であり、且つ、第16の識別情報に対して第1の輻輳管理に対応する値と、第2の輻輳管理に対応する値のみ設定可能な情報である場合に、少なくとも第16の識別情報を受信しなかった場合。
まず、登録手続きの概要について説明する。登録手続きは、UE_A10が主導してネットワーク(アクセスネットワーク、及び/又はコアネットワーク_B190、及び/又はDN_A5)へ登録する為の手続きである。UE_A10は、ネットワークに登録していない状態であれば、電源投入時等の任意のタイミングで本手続きを実行することができる。言い換えると、UE_A10は、非登録状態(RM-DEREGISTERED state)であれば任意のタイミングで本手続きを開始してもよい。また、各装置は、登録手続きの完了に基づいて、登録状態(RM-REGISTERED state)に遷移してもよい。
図10を用いて、登録手続きを実行する手順の例を説明する。本章では、本手続きとは登録手続きを指す。以下、本手続きの各ステップについて説明する。
次に、DN_A5に対するPDUセッションを確立するために行うPDUセッション確立手続きの概要について説明する。以下、PDUセッション確立手続きは、本手続きとも称する。本手続きは、各装置がPDUセッションを確立する為の手続きである。尚、各装置は、本手続きを、登録手続きを完了した状態で実行してもよいし、登録手続きの中で実行してもよい。また、各装置は、登録状態で本手続きを開始してもよいし、登録手続き後の任意のタイミングで本手続きを開始してもよい。また、各装置は、PDUセッション確立手続きの完了に基づいて、PDUセッションを確立してもよい。さらに、各装置は、本手続きを複数回実行することで、複数のPDUセッションを確立してもよい。
図11を用いて、PDUセッション確立手続きを実行する手順の例を説明する。以下、本手続きの各ステップについて説明する。まず、UE_A10は、アクセスネットワーク_Bを介して、コアネットワーク_BにPDUセッション確立要求(PDU Session Establishment Request)メッセージを送信することにより(S1100)、PDUセッション確立手続きを開始する。
次に、ネットワーク主導のセッションマネジメント手続きの概要について説明する。以下、ネットワーク主導のセッションマネジメント手続きは本手続きとも称する。本手続きは、確立されたPDUセッションに対してネットワークが主導して実行するセッションマネジメントの為の手続きである。尚、本手続きは、前述の登録手続き及び/又はPDUセッション確立手続きが完了し、各装置が第1の状態に遷移した後の任意のタイミングで実行してもよい。また、各装置は、本手続き中に輻輳管理を停止又は変更する為の識別情報を含んだメッセージを送受信してもよいし、本手続きの完了に基づいてネットワークが指示する新たな輻輳管理に基づく挙動を開始してもよい。
図12を用いて、ネットワーク主導のセッションマネジメント手続きの例を説明する。本章では、本手続きとはネットワーク主導のセッションマネジメント手続きを指す。以下、本手続きの各ステップについて説明する。
1.3.3.1章で説明した第1のネットワーク主導のセッションマネジメント手続き例では、UE_A10に対して適用されている輻輳管理が、第1から第4の輻輳管理のどの輻輳管理であるかに関わらず、手続きの中で輻輳管理を停止する例を説明した。
以下に本発明における各実施形態についてそれぞれ説明する。
図10及び図11を用いて、本発明における第1の実施形態を説明する。以下第1の実施形態を本実施形態とも称する。
本実施形態は、輻輳管理が適用されている状態において、UEがシステムの変更を行った場合の処理について説明する。具体的には、輻輳管理が適用されている状態において、UEが、N1モードからS1モードに変更した場合の処理について説明する。
本発明に関わる装置で動作するプログラムは、本発明に関わる実施形態の機能を実現するように、Central Processing Unit(CPU)等を制御してコンピュータを機能させるプログラムであっても良い。プログラムあるいはプログラムによって取り扱われる情報は、一時的にRandom Access Memory(RAM)等の揮発性メモリあるいはフラッシュメモリ等の不揮発性メモリやHard Disk Drive(HDD)、あるいはその他の記憶装置システムに格納される。
Claims (5)
- UE(User Equipment;端末装置)であって、
送受信部を備え、
前記送受信部は、DNN(Data Network Name)及びS-NSSAI(Single Network Slice Selection Assistance information)に対するバックオフタイマーが起動中にPLMN(Public Land Mobile Network)変更を行った際に、Home-routed信号トラヒック経路で再接続が許可されている場合、Home-routed信号トラヒック経路での同一のDNN及びS-NSSAIを用いたPDUセッション確立手続きを実施する、
ことを特徴とするUE。 - UE(User Equipment;端末装置)であって、
送受信部を備え、
前記送受信部は、no DNN(Data Network Name)及びS-NSSAI(Single Network Slice Selection Assistance information)に対するバックオフタイマーが起動中にPLMN(Public Land Mobile Network)変更を行った際に、Home-routed信号トラヒック経路で再接続が許可されている場合、Home-routed信号トラヒック経路でのDNNを含まないS-NSSAIを用いたPDUセッション確立手続きを実施する、
ことを特徴とするUE。 - コアネットワーク装置であって、
送受信部を備え、
前記送受信部は、DNN(Data Network Name)及びS-NSSAI(Single Network Slice Selection Assistance information)に対するバックオフタイマーが起動中にUE(User Equipment;端末装置)がPLMN変更を行った際に、Home-routed信号トラヒック経路で再接続が許可されていることを示す情報を前記UEに通知する、
ことを特徴とするコアネットワーク装置。 - UE(User Equipment;端末装置)の通信制御方法であって、
DNN(Data Network Name)及びS-NSSAI(Single Network Slice Selection Assistance information)に対するバックオフタイマーが起動中にPLMN(Public Land Mobile Network)変更を行った際に、Home-routed信号トラヒック経路で再接続が許可されている場合、Home-routed信号トラヒック経路での同一のDNN及びS-NSSAIを用いたPDUセッション確立手続きを実施する、
ことを特徴とするUEの通信制御方法。 - コアネットワークの通信制御方法であって、
DNN(Data Network Name)及びS-NSSAI(Single Network Slice Selection Assistance information)に対するバックオフタイマーが起動中にUE(User Equipment;端末装置)がPLMN変更を行った際に、Home-routed信号トラヒック経路で再接続が許可されていることを示す情報を前記UEに通知する、
ことを特徴とするコアネットワークの通信制御方法。
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| EP20738303.5A EP3911017A4 (en) | 2019-01-11 | 2020-01-08 | USER EQUIPMENT, CORE NETWORK DEVICE AND COMMUNICATIONS CONTROL METHOD |
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| FR3119962A1 (fr) * | 2021-02-12 | 2022-08-19 | Orange | Transmission de données d’un réseau de communication vers un équipement utilisateur |
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| US12563391B2 (en) * | 2022-02-18 | 2026-02-24 | Nokia Technologies Oy | Authentication failure cause notification in communication system |
| JP7759867B2 (ja) * | 2022-11-02 | 2025-10-24 | シャープ株式会社 | UE(User Equipment) |
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| EP3911017A1 (en) | 2021-11-17 |
| CN113287341A (zh) | 2021-08-20 |
| JP7216553B2 (ja) | 2023-02-01 |
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