Nippon Telegraph and Telephone Corporation

Masanao Nakano

Naoki Higo

Toshimitsu Tsubaki

Kojun Koshiji

Tatsuya Ishihara

Yoshiko Sueda

Takeshi Kuwahara

Takuma Tsubaki

Yuki Yano

Takao Kurahashi

A message relay apparatus and a message relay method that achieve high message reachability taking communication network situation into consideration are provided. A message relay apparatusinterposed between an applicationand a deviceincludes a device communication state determination functional unitthat determines communication availability with the device, a network state estimation unitthat estimates a network state based on the communication availability, and a message processing unitthat determines forwarding availability of an application message based on the network state and buffers the application message when forwarding is not available.

Message relay apparatus and method

A data transmission apparatus causes a computer to receive first data and second data, each of which has a different transmission destination, evaluate relevance between the first data and the second data, and transmit the first data and the second data to the respective transmission destinations, and the transmitting of the data further includes transmitting the first data to the transmission destination of the second data in accordance with evaluation results obtained in the evaluating of the relation, so that a diversity of the data that can be collected by the transmission destination of the data is increased.

Data transmission method, data transmission apparatus and program

An information delivery technique for, at the time of delivery of area information via a network, delivering area information about a destination before a device arrives at the destination is disclosed. One aspect of the present disclosure is an information delivery apparatus including a delivery information management function unit configured to manage area information to be delivered, a destination management function unit configured to manage a destination of a device, and a communication function unit configured to deliver the area information to the device, wherein the destination management function unit determines the destination of the device using movement information about the device, and the communication function unit delivers area information about the destination to the device before the device moves to the destination.

Information delivery apparatus, information delivery method and program

A time providing method includes: by a computer, upon receiving data from a device, estimating a generation time of the data using a reception time of the data and a first delay time of the device previously estimated; providing information indicating the generation time to the data; and transmitting the data provided with the information indicating the generation time to a destination of the data.

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Tokyo, Japan

Masanao Nakano