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: An object is to provide a slice management system capable of assigning slices to a plurality of business operators. In a parent SMF 100, a slice management table 103 can manage resources of a slice managed by a child SMF 100a or the like, and a communication unit 101 can notify the child SMF 100a or the like of the resources. The child SMF 100a or the like receives the resources and stores the resources in the slice management table 106. Therefore, the child SMF 100a or the like can manage the resources of the slice managed by the child SMF 100a or the like, and the child SMF 100a can independently enable the management of the resources.

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: In a slice management device 10, a storage request accepting unit 11 acquires correspondence information in which a service, a slice, and tracking areas are associated with each other. A presence-in-area identifying unit 13 identifies a presence-in-area status of a UE 130. An assignment unit 14 assigns a slice corresponding to a service used by the UE 130 and tracking areas represented by the correspondence information. In this case, the slice management device 10 assigns a slice to a service in accordance with the presence-in-area status of the UE 130, and accordingly, a slice assigned to the service can be dynamically changed.

Abstract: An object is to provide a slice management system capable of assigning slices to a plurality of business operators. In a parent SMF 100, a slice management table 103 can manage resources of a slice managed by a child SMF 100a or the like, and a communication unit 101 can notify the child SMF 100a or the like of the resources. The child SMF 100a or the like receives the resources and stores the resources in the slice management table 106. Therefore, the child SMF 100a or the like can manage the resources of the slice managed by the child SMF 100a or the like, and the child SMF 100a can independently enable the management of the resources.

Abstract: In a slice management device 10, a storage request accepting unit 11 acquires correspondence information in which a service, a slice, and tracking areas are associated with each other. A presence-in-area identifying unit 13 identifies a presence-in-area status of a UE 130. An assignment unit 14 assigns a slice corresponding to a service used by the UE 130 and tracking areas represented by the correspondence information. In this case, the slice management device 10 assigns a slice to a service in accordance with the presence-in-area status of the UE 130, and accordingly, a slice assigned to the service can be dynamically changed.

Abstract: A connection control method is implemented by a communication system including a UE, two or more SGWs, and an MME for performing processing related to establishment and release of communication paths between the two or more SGWs and the UE. The connection control method includes a request reception in which the MME receives an establishment request of a communication path associated with the UE from one SGW, a path establishment starting processing related to establishment of communication paths between the UE and all SGWs, and an information updating in which the MME updates information related to an establishment status of the communication path stored in a storage unit on the basis of a result of establishing the communication path.

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: In a communication system (1) including a terminal (10), a base station (20), a processing server (30) that executes a process related to the terminal, and one or a plurality of serving gateways (40), the processing server (30) includes: a determination unit (31) that determines whether or not an unused bearer other than a used bearer used for a service process is to be established on the basis of a system load for bearer maintenance and a system load for bearer establishment when the determination unit receives a service processing request from the terminal that is in an idle state; and a bearer establishment control unit (32) that performs control so that the unused bearer determined to be established by the determination unit (31) and the used bearer are established between a corresponding serving gateway and the terminal.

Abstract: In a communication system (1), when there is no access destination corresponding to a service type to be used by a piece of UE (50) in one of cellular communication and non-cellular communication, a retrieval unit (13) of a DB server (10) selects an access destination by referring to correspondence information in the other of the cellular communication and the non-cellular communication. Thus, when there is no access destination corresponding to the service type to be used by the UE (50) in one of the cellular communication and the non-cellular communication, the access destination corresponding to the service type is selected in the other of the cellular communication and the non-cellular communication. Therefore, it is possible to select an access destination suitable for the service type from both the cellular communication and the non-cellular communication.

Abstract: A slice changing device is disclosed including a circuitry configured to acquire, in a case where a condition for changing a slice is satisfied, a connection destination of a slice after change. The circuitry is further configured to notify a communication device that connects a terminal using a slice and a connection destination of a slice of the acquired connection destination, and to release a resource relating to a slice before change after notification by the notifying means, where a service which is used by the terminal is allocated to a slice, and in a case where a condition in which the slice is changed is satisfied, the service is allocated to a slice after change.

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: In a service mapping apparatus, an allocation service table, which associates a service to which a slice is allocated in advance, the slice, and an address representing an apparatus executing the service with each other, is stored. In addition, a request accepting unit of the service mapping apparatus receives an SLA-SL that is a requirement of a function. A determination unit determines a slice including an SLA-SL corresponding to the received service requirement (SLA-SL) of the service (satisfying the service requirement). In a case in which a service that is the allocation target is associated with a slice in advance, an allocation unit changes allocation of the service to the determined slice.

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: A network operating device is disclosed that serves as a slice management device and assigns a service to slices that are virtual networks generated on a network infrastructure. The slices are being arranged in a plurality of stages of a communication path along which communication is performed between a user equipment as a user terminal and a service server providing the service. The network operating device includes an information acquiring unit that acquires a slice setting request including a service requirement, a slice setting policy determining unit that determines a slice setting policy for setting slices, and a slice setting unit that performs a process relating to the settings of the slices in the plurality of stages on the basis of the setting policy.

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: An SGW-C acquires correlation information in advance and retrieves an SGW-U corresponding to a tracking area of a movement destination of UE with reference to the correlation information. An MME issues a request for connection between the SGW-U retrieved by the SGW-C and an eNB. In this way, since the correlation information in which SGW-Us and tracking areas are correlated with each other is stored, it is possible to appropriately change a tracking area even in a situation in which a control plane and a user plane are separated.