Abstract: A restoration determination device 1 calculates, based on past traffic data of each user in a first NW device, a current estimated traffic amount of the user, compares the calculated current estimated traffic amount of the user with a current traffic amount of the user in a second NW device to which the first NW device is switched, and determines restoration by switching to the second NW device to be abnormal when the number of users for which the current estimated traffic amount is larger than zero but the current traffic amount is zero exceeds a threshold value.

Abstract: [Problem] A lead time for providing a network service can be shortened. [Solution] A network service management apparatus 100 that uses resources included in a network functions virtualization infrastructure 140 to provide a network service includes an orchestrator 110 that defines resources that satisfy a resource requirement of a virtual network function constituting the network service and are allocated to the virtual network function, and reserves the resources, and a virtualized infrastructure manager 130 that secures the reserved resources, activates the virtual network function on the secured resources, and generates the network service. When the securing of the reserved resources fails, the orchestrator 110 re-reserves resources to replace the reserved resources, and the virtualized infrastructure manager 130 secures the re-reserved resources, and activates the virtual network functions on the secured resources.

Abstract: An operation apparatus for outputting a request to a management apparatus which manages a Network Service (NS) constructed on a NetWork (NW) including a core NW serving as a virtualization area and an access NW serving as a non-virtualization area including: a storage unit configured to store new configuration information obtained by updating NW configuration information indicating an NW configuration including devices disposed on the NW due to a fault of the NS, a catalog which is a template of the NS, a record describing a lifecycle of the NS, and an order for requesting the management apparatus to control the NS; an optimal configuration determination unit configured to determine an optimal configuration of the NS based on the new configuration information, the catalog, the record, and the order; and an order generation unit configured to generate a change order for changing an NS configuration of the NS to the optimal configuration determined by the optimal configuration determination unit.

Abstract: [Problem] A network service selection apparatus is provided that is able to suitably realize dynamic switching of a network service with a simple method. [Solution] A network service selection apparatus 4 is provided that includes a network service switching unit 30 configured to, based on a specification of a network service stored and a service request from a user terminal apparatus, extract a combination of the network services of an initial operation and a spare network service and to connect two service providing systems corresponding to the combination of the network services of the initial operation, and a network service state confirmation unit 40 configured to confirm a state of a network service between the two service providing systems 2.

Abstract: A management apparatus is configured to manage a network service (NS) constructed on a network (NW) including a core NW configured to serve as a virtualization area and an access NW configured to serve as a non-virtualization area includes an E2EO configured to control the NS, an SVRO configured to control server-type apparatuses located on the NW, and a NWRO configured to control NW-type apparatuses located on the NW. The E2EO includes a single data center (DC) determination unit configured to determine whether a group of apparatuses used for providing the NS is located in a single DC. The group of apparatuses is designated by an order acquired from an upper level apparatus U. Among the NW-type apparatuses, ToRs located in the DC are controlled by the SVRO, instead of by the NWRO, when it is determined that the group of apparatuses is located in the single DC.

Abstract: The operator load is reduced while satisfying a service quality specification as far as possible. A handling procedure inquiry unit 121 acquires a handling procedure group including at least one handling procedure regarding a failure, a handling/recovery influence inquiry unit 122 acquires a degree of influence of performing, with respect to each handling procedure of the handling procedure group, the handling procedure, a handling procedure prioritization unit 123 selects the handling procedure to be performed based on whether or not a worker is needed and the degree of influence, a countermeasure selection unit 124 assigns the selected handling procedure to an automatic handling control unit 13, a planned maintenance control unit 14, or an immediate action control unit 15 that can perform the handling procedure.

Abstract: [Problem] To improve performance of NS management. [Solution] A management apparatus M for managing an NS constructed on an NW including a virtualization area and a non-virtualization area includes a request reception unit 11 configured to acquire an NS generation order including an input parameter required for designating a server-side apparatus and an NW-side apparatus, from an external apparatus, and a catalog DB 17 that stores a catalog serving as a template of the NS. The catalog includes an NSD being a portion in which a configuration of the NS is described and having a plurality of types of information sets defining a group of constituent elements of the NS in a selectable manner.

Abstract: [Problem] A lead time for providing a network service can be shortened. [Solution] A network service management apparatus 100 that uses resources included in a network functions virtualization infrastructure 140 to provide a network service includes an orchestrator 110 that defines resources that satisfy a resource requirement of a virtual network function constituting the network service and are allocated to the virtual network function, and reserves the resources, and a virtualized infrastructure manager 130 that secures the reserved resources, activates the virtual network function on the secured resources, and generates the network service. When the securing of the reserved resources fails, the orchestrator 110 re-reserves resources to replace the reserved resources, and the virtualized infrastructure manager 130 secures the re-reserved resources, and activates the virtual network functions on the secured resources.

Abstract: [Problem] Service responsiveness of a service provided by an intra-DC apparatus is improved. [Solution] A management apparatus M is configured to manage a network service (NS) constructed on a network (NW) including a core NW configured to serve as a virtualization area and an access NW configured to serve as a non-virtualization area includes an E2EO 1 configured to control the NS, an SYRO 2 configured to control server-type apparatuses located on the NW, and a NWRO 3 configured to control NW-type apparatuses located on the NW. The E2EO 1 includes a single data center (DC) determination unit 121 configured to determine whether a group of apparatuses used for providing the NS is located in a single DC. The group of apparatuses is designated by an order acquired from an upper level apparatus U. Among the NW-type apparatuses. ToRs 4 and 4a located in the DC are controlled by the SVRO 2, instead of by the NWRO 3, when it is determined that the group of apparatuses is located in the single DC.

Abstract: An operation apparatus for outputting a request to a management apparatus which manages a Network Service (NS) constructed on a NetWork (NW) including a core NW serving as a virtualization area and an access NW serving as a non-virtualization area including: a storage unit configured to store new configuration information obtained by updating NW configuration information indicating an NW configuration including devices disposed on the NW due to a fault of the NS, a catalog which is a template of the NS, a record describing a lifecycle of the NS, and an order for requesting the management apparatus to control the NS; an optimal configuration determination unit configured to determine an optimal configuration of the NS based on the new configuration information, the catalog, the record, and the order; and an order generation unit configured to generate a change order for changing an NS configuration of the NS to the optimal configuration determined by the optimal configuration determination unit.

Abstract: [Problem] A network service selection apparatus is provided that is able to suitably realize dynamic switching of a network service with a simple method. [Solution] A network service selection apparatus 4 is provided that includes a network service switching unit 30 configured to, based on a specification of a network service stored and a service request from a user terminal apparatus, extract a combination of the network services of an initial operation and a spare network service and to connect two service providing systems corresponding to the combination of the network services of the initial operation, and a network service state confirmation unit 40 configured to confirm a state of a network service between the two service providing systems 2.

Abstract: The present invention relates to a core-shell type polymer particle including a shell part composed of an amphoteric polymer (A) and a core part composed of a hydrophobic polymer (B).

Abstract: The present invention relates to a core-shell type polymer particle including a shell part composed of an amphoteric polymer (A) and a core part composed of a hydrophobic polymer (B).

Abstract: The present invention relates to a core-shell type polymer particle including a shell part composed of an amphoteric polymer (A) and a core part composed of a hydrophobic polymer (B).

Abstract: The present invention relates to a core-shell type polymer particle including a shell part composed of an amphoteric polymer (A) and a core part composed of a hydrophobic polymer (B).

Abstract: A repeater device receives from a first repeater device, which is adjacent to the repeater device on a network, a signature for controlling passage of a packet through the repeater device and determines whether to send the received signature to a second repeater device, which is adjacent to the repeater device on the network, based on contents of the received signature, and sends the received signature to the second repeater device when determining that the received signature is to be sent to the second repeater device.

Abstract: A network attack mitigation device defends a victim device against an attack from an attacker device while collaborating with other network attack mitigation devices. When the attack ends, the network attack mitigation device decides whether to terminate mitigation measure taken against the attack. This decision is made based on a status of other network attack mitigation device that is nearer to the attacker device than the network attack mitigation device. When deciding not to prepare for resume of the attack, the network attack mitigation device deletes information relating to the attack and returns to a normal state. When deciding to prepare for resume of the attack, the network attack mitigation device prepares to resume of the attack without deleting the information relating to the attack.

Abstract: In a vehicle having an ABS control system, a braking control of a right and left rear wheels can be independently carried out when a lateral acceleration exceeds a lateral acceleration value set beforehand. When the ABS control is operated at one of the right and left rear wheels, the control system executes a stepwise pressure increase control which provides a stepwise pressure increase for the other rear wheel up to a braking pressure to be reached at a start of the control.

Abstract: In a vehicle having an ABS control system, a braking control of a right and left rear wheels can be independently carried out when a lateral acceleration exceeds a lateral acceleration value set beforehand. When the ABS control is operated at one of the right and left rear wheels, the control system executes a stepwise pressure increase control which provides a stepwise pressure increase for the other rear wheel up to a braking pressure to be reached at a start of the control.

Abstract: In a vehicle having an ABS control system, a braking control of a right and left rear wheels can be independently carried out when a lateral acceleration exceeds a lateral acceleration value set beforehand. When the ABS control is operated at one of the right and left rear wheels, the control system executes a stepwise pressure increase control which provides a stepwise pressure increase for the other rear wheel up to a braking pressure to be reached at a start of the control.