Abstract: An NSSF (69) includes: a selection unit selecting a slice corresponding to a service related to a request from a terminal (10) and a target processing server corresponding to the slice based on slice correspondence information including information where a slice, a processing server corresponding to the slice, and a service used by a terminal are associated with one another; and a notification unit notifying an AMF (30) of selection result including information regarding the slice and target processing server. The AMF includes: a determination processing unit determining whether the AMF is a target processing server based on information on the target processing server in the selection result information, and performing processing for a service when the AMF is the target processing server, or transferring a request for processing for a service to the target processing server when the AMF is not the target processing server.

Abstract: According to one embodiment, a method for establishing a connection of a mobile terminal to a mobile radio communication network is described comprising a radio access network of a mobile radio communication network receiving a connection request from a mobile terminal, the radio access network establishing a control plane communication having as a first endpoint the radio access network, the radio access network forwarding the mobile terminal's connection request to a first common control plane function via the control plane communication, the radio access network receiving a message indicating that the second endpoint of the control plane communication should be set to the second common control plane function and the radio access network setting the second endpoint of the control plane communication to the second common control plane function.

Abstract: According to one embodiment, a method for establishing a connection of a mobile terminal to a mobile radio communication network is described comprising a first common control plane function of a mobile radio communication network receiving a connection request from a mobile terminal; the first common control plane function authenticating the mobile terminal including generating an authentication context of the mobile terminal; the first common control plane function forwarding the connection request and transmitting the authentication context of the mobile terminal to a second common control plane function of the mobile radio communication network and the second common control plane function connecting the mobile terminal to the mobile radio communication network.

Abstract: Methods and devices provide for enhancements to the Steering of Roaming (SoR) provisioning during the registration procedure by introducing a new parameter generated by a user data management network function of the home network which indicates to roaming networks whether to request updated SoR information based on a registration type received in a registration request from a mobile terminal.

Abstract: An object is that, in a mobile communication, a communication terminal that performs a non-cellular communication can access a service network that provides a service. A network access method to be performed by a communication system 8 forming a core network of the mobile communication and to cause a UE 7 performing the non-cellular communication to access a slice 5 providing the service comprises: an acquisition step of acquiring from the UE 7, terminal identification information identifying the UE 7; and an access step of referring to correspondence information correlating the UE 7 and the slice 5, and causing the UE 7 to access the slice 5 correlated with the UE 7 identified by the terminal identification information acquired in the acquisition step.

Abstract: A method for managing wireless communications after inserting an intermediate-session management function I-SMF to communicate between an access and mobility management function AMF and one or more session management functions SMFs, the method including: receiving, at the I-SMF, a session request (604) from the AMF, the session request comprising an SMF information, and forwarding (606) the session request to at least one SMF of the one or more SMFs based on the SMF information; receiving, at the I-SMF, a response (610) to the session request from the at least one SMF, the response comprising a first subscription information for at least one event subscription, and creating a first identification based on the first subscription information; and transmitting (614), from the I-SMF, the first identification to the AMF to trigger the AMF to change an address for the at least one event subscription from the at least one SMF to the I-SMF.

Abstract: According to one embodiment, a communication network component is described comprising a receiver configured to receive a request for a communication service of a local area data network from a mobile terminal and a controller configured to reject the request if the mobile terminal is located in a part of the local area data network that requires an intermediate session management function to serve the mobile terminal.

Abstract: According to one embodiment, a server device includes one or more processors. The one or more processors are configured to identify a home mobile network of a user equipment that attempts to roam in a visited mobile network including the server device, send, to a network function repository function, a service request that identifies the home mobile network, receive, from the network function repository function, a service request response that identifies a home subscriber service in the home mobile network and that identifies the home mobile network as a legacy network of the visited mobile network, retrieve, from the home subscriber service, subscriber information for the user equipment, and configure a roaming connection for the user equipment in the visiting mobile network.

Abstract: According to one embodiment, a mobile communication network component is described comprising a memory configured to store information indicating whether slice-specific re-authentication and re-authorization is to be performed for a mobile terminal, a determiner configured to determine, based on the stored information, whether for a mobile terminal a slice-specific re-authentication and re-authorization is to be performed and a controller configured to initiate a slice-specific re-authentication and re-authorization if the determiner determines that a slice-specific re-authentication and re-authorization is to be performed.

Abstract: According to one embodiment, a network function database of a mobile communication network is described comprising a memory configured to store, for a network function or service of the mobile communication network, an indication that the network function or service is configured to take over serving mobile terminals served by one of one or more other mobile communication networks, a receiver configured to receive, from another mobile radio communication network, a request for selecting a network function or service to take over serving a mobile terminal served by the other mobile communication network and a selector configured to select the network function or service for taking over serving the mobile terminal for which the memory stores the indication that the network function or service is configured to take over serving mobile terminals served by one of one or more other mobile communication networks if the one or more other mobile communication networks include the other mobile communication network ser

Abstract: A network node includes a receiver configured to receive, from a user equipment, a message requesting an initial registration or a location registration from a user equipment; and a transmitter configured to transmit a message to the user equipment when the user equipment is disallowed to connect to any one of one or more network slices, the message allowing the initial registration or the location registration including information related to a connection restriction that causes the user equipment to transition into a state in which the user equipment is registered and the user equipment is not allowed to use a service.

Abstract: According to one embodiment, a method for establishing a connection of a mobile terminal to a mobile radio communication network is described comprising a radio access network of a mobile radio communication network receiving a connection request from a mobile terminal, the radio access network establishing a control plane communication having as a first endpoint the radio access network, the radio access network forwarding the mobile terminal's connection request to a first common control plane function via the control plane communication, the radio access network receiving a message indicating that the second endpoint of the control plane communication should be set to the second common control plane function and the radio access network setting the second endpoint of the control plane communication to the second common control plane function.

Abstract: A mobile communication system is a mobile communication system that controls a connection with a slice which is a virtual network generated on a network infrastructure, and includes a request receiving unit 12 that receives a request for a connection with a slice of a control target of an AMF 100 from a UE 140 used by a user and a selection information transmitting unit 14 that controls, in response to the reception of the request, the connection of the UE 140 with the slice, acquires selection information for selecting a slice of a control target of another AMF 100x different from the AMF 100, and transmits the selection information to the terminal.

Abstract: A common C-Plane control node includes a change request acquiring unit that acquires a change request relating to changing of a communication path relating to a UE, a determination unit that determines whether or not the UE has set up the communication path in each of control nodes of a plurality of slices using information included in the change request acquired by the change request acquiring unit, and a communication processing unit that performs a process relating to changing of a communication path while forming a state in which the communication path before change and the communication path after change coexist for each of a plurality of communication paths in a case in which the determination unit determines that the UE has set up the communication path in each of the plurality of slices.

Abstract: According to one embodiment, a method for associating network functions with a network slice instance of a mobile radio communication network is described comprising an Network Slice Management Function, NSMF, creating an identifier for a network slice instance, NSI, for Operations Administration and Management, OAM, wherein the mobile radio communication network comprises a core network and an OAM system, wherein the OAM system comprises at least the NSMF which has interfaces to network functions in the core network, wherein the network functions provide a communication service to a mobile terminal and wherein the core network further comprises a Network Repository Function, NRF, that maintains an association of network functions and network slice instances of the mobile radio communication network; and the NSMF or the NRF notifying one or more network functions about their association with the network slice instance.

Abstract: In a communication system in which a plurality of bearers are set up between UE and one or more PGWs, a PGW measures an idle time for each bearer and determines whether or not the measured idle time has reached an idle timer threshold value which is determined in advance for each of the plurality of bearers (Step 1). Then, when it is determined that the idle time for one bearer, for example, bearer 2, has reached the idle timer threshold value (Step 2), a PGW2 requests an MME to release bearer 2 via an SGW2 (Steps 3 and 4), and the MME performs a process of releasing bearer 2 in response to the request (Step 5 and the like).

Abstract: An object is that, in a mobile communication, a communication terminal that performs a non-cellular communication can access a service network that provides a service. A network access method to be performed by a communication system 8 forming a core network of the mobile communication and to cause a UE 7 performing the non-cellular communication to access a slice 5 providing the service comprises: an acquisition step of acquiring from the UE 7, terminal identification information identifying the UE 7; and an access step of referring to correspondence information correlating the UE 7 and the slice 5, and causing the UE 7 to access the slice 5 correlated with the UE 7 identified by the terminal identification information acquired in the acquisition step.

Abstract: A communication system is disclosed in which communication control is performed for a slice which is a virtual network accessible by a mobile terminal from any of a plurality of mobile communication networks with different communication schemes, the communication system including a communication control device arranged to perform communication connection control for the slice in each of the plurality of mobile communication networks, wherein the communication control device arranged in one mobile communication network among the plurality of mobile communication networks includes a search unit that searches for another communication control device arranged in another mobile communication network if an instruction to switch the mobile communication network with which the mobile terminal has a communication connection is received; and a communication unit that takes over communication control information for the communication connection control with the other communication control device.

Abstract: A slice management system (1) is a slice management system managing slices that are virtual networks generated on a network infrastructure, comprises a memory storing a priority list in which slices of connection destination candidates of a UE (2) are aligned in order of priority levels and, in a case in which a connection request for a slice from the UE (2) is acquired, determines a slice to which UE (2) is to be connected on the basis of the priority list stored in the memory.

Abstract: According to one embodiment, a method for associating network functions with a network slice instance of a mobile radio communication network is described comprising an Network Slice Management Function, NSMF, creating an identifier for a network slice instance, NSI, for Operations Administration and Management, OAM, wherein the mobile radio communication network comprises a core network and an OAM system, wherein the OAM system comprises at least the NSMF which has interfaces to network functions in the core network, wherein the network functions provide a communication service to a mobile terminal and wherein the core network further comprises a Network Repository Function, NRF, that maintains an association of network functions and network slice instances of the mobile radio communication network; and the NSMF or the NRF notifying one or more network functions about their association with the network slice instance.