Nippon Telegraph and Telephone Corporation

Yukihisa Katayama

Shinichiro Eitoku

Masahiko Tsuji

Allowing an execution of an allocation processing and allocation release the processing of a device to a service program during an execution of the service program. Under control of an execution management section (), in case device transmission data received is device transmission data satisfying a predetermined transition condition of a state transition, a service state of the service program is updated. Then, under control of an execution management section (), a notification of the service state update is transmitted to a service context determination section (). Under control of the service context determination section (), whether there is a change in a service context to be executed on the service program based on service context information is confirmed. When it is confirmed that the service context is changed, under control of the service context determination section (), a device occupation request or a device occupation release request is transmitted to a device management section ().

Service program device allocation and release

A logical device for implementing a service can be dynamically assigned to an available real device. A real device assignment request relating to a registered service program is transmitted to a real device assignment determination section () under the control of a registration management section () of a service program management section (). An assignment of a logic device relating to the service program to a real device is determined based on logic device information, real device interface assignment information, and real device information relating to an available real device under the control of the real device assignment determination section (). Based on the assignment information, communication processing of a control command and data between the logic device relating to the service program and the real device to which the logic device is assigned.

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Musashino, Japan

Yukihisa Katayama