Nippon Telegraph and Telephone Corporation

Kosuke Sakata

Yuji Soejima

Motomu Nakajima

Atsushi Takada

Masataka Sato

Atsushi Hirabayashi

Shingo Horiuchi

Kimihiko Fukami

Aiko Oi

Kyoko Yamagoe

Yuichi Suto

To appropriately exclude alarms not requiring maintenance operator confirmation. An alarm control deviceincludes: an individual filter determination unitwhich acquires, from a storage unit, a determination condition (an individual filter) for whether or not maintenance operator confirmation corresponding to a device alarm issued from a network element deviceis necessary; an alarm evaluation unitwhich acquires information corresponding to a determination criterion of the determination condition from a management databasemanaging the network element device, checks the acquired information with the determination condition, and determines whether or not maintenance operator confirmation is necessary; and an alarm notification unitwhich transmits a device alarm to a maintenance operator terminalwhen the maintenance operator confirmation is determined to be necessary and does not transmit the device alarm to the maintenance operator terminalwhen the maintenance operator confirmation is determined to be unnecessary.

Alarm control device and alarm control method

Service failure information can be quickly and accurately disseminated to appropriate targets. A service failure information dissemination systemreceives alarm information notifying that a failure has occurred in a service or a device for providing a service and related information that relates to the alarm information, obtains the degree of influence of the failure for each service type based on the alarm information and the related information, determines a dissemination target and a dissemination means of failure information based on the degree of influence, creates failure information according to the dissemination means, and disseminates the failure information to the dissemination target through the dissemination means.

Failure information announcement device and failure information announcement method

[Problem] A lead time for providing a network service can be shortened. [Solution] A network service management apparatusthat uses resources included in a network functions virtualization infrastructureto provide a network service includes an orchestratorthat 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 managerthat 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 orchestratorre-reserves resources to replace the reserved resources, and the virtualized infrastructure managersecures the re-reserved resources, and activates the virtual network functions on the secured resources.

Network service management device, network service management method, and network service management program

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.

Operation device and operation method

Growing community of inventors

Tokyo, Japan

Kosuke Sakata