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NTT Press Releases

January 23, 2019

Nippon Telegraph and Telephone Corporation

Demonstration experiment to substantially reduce communications traffic from IoT devices to cloud environment is started by NEC, the University of Tokyo, NTT, and Waseda University

In the middle of December 2018, NEC Corporation (Note 1, hereafter referred to as NEC), Nakao Laboratory, Interfaculty Initiative in Information Studies, National University Corporation, the University of Tokyo (Note 2, hereafter referred to as the University of Tokyo), Nippon Telegraph and Telephone Corporation (Note 3, hereafter referred to as NTT), and Educational Corporation, Waseda University (Note 4, hereafter referred to as Waseda University) jointly started in the Chugoku region to develop a common IoT platform to implement a demonstration experiment concerning the protection of high-priority communications between IoT devices and the cloud environment.
Specifically, in the demonstration experiment, information collected from river level and rainfall sensors is monitored to allow forecasting of river overflow. What is intended to demonstrate is that the network traffic can be reduced by means of IoT gateway (Note 5), which, instead of cloud environment, performs the functionality of data processing applications, depending on urgency and importance of data. Utilizing various sensors and IoT gateway installed in the Chugoku region, cloud environment installed in the Yokohama Research Park (YRP), and a large-scale sensor/cloud infrastructure test-bed (JOSE) operated by the National Institute of Information and Communications Technology (NICT), the technological effectiveness will be evaluated during the period from the middle of December 2018 to the middle of February 2019.
The four parties have been investigating common IoT platform technologies, which allow effective, optimum, and dynamic utilization of network, and their specific applications. According to a provisional calculation at the moment, it is expected that about 90 percent of communications traffic can be reduced. This demonstration experiment is part of the verification of the effects of the platform, and the achievements of this demonstration experiment will be the achievements of the project, “Establishment and demonstration of common IoT platform technologies,” the contract research sponsored by the Ministry of Internal Affairs and Communications.
In the future, the four parties will cope with this research and development until March 2019, and will contribute to the development of solutions and services, which utilize IoT and of which demand is expected to increase.

Applications to be used in the experiment

In this demonstration experiment, an application program is utilized, which uses learning functionality to create a river level prediction model based on data from river level and rainfall sensors, etc., and prediction functionality uses this prediction model to provide forecasting of river overflow. In normal times, these functions are executed on cloud servers, and in emergencies, in order to secure a communication bandwidth necessary for collecting detailed data from areas (emphasis district) where disasters are anticipated to occur, prediction functionality for non-emphasis districts will be moved to IoT gateway whereby communications traffic can be reduced. In this way, river level monitoring will be made possible even for small-scale facilities, and it is expected that river level monitoring can be expanded to the monitoring of class B river level.
Furthermore, the results of the prediction will be distributed to users by means of information-centric networking (ICN) technologies.

Outline of relevant development activities allocated to each organization

NEC Research and development of IoT system control technologies for deploying IoT applications to cloud servers and IoT gateway whereby service quality requirements can be satisfied.
The University of Tokyo Research and development of network-slicing technologies for controlling IoT traffic by classifying IoT data according to the degree of importance and by preventing mutual interference of IoT data
NTT Research and development of river level forecasting technologies for providing real-time forecasting of river level, which is required for disaster prevention and reduction, based on information collected from various sensors
Waseda University Research and development of information-centric networking (ICN) technologies for cashing, at distributed edges, data and content videos from IoT sensors or from IoT gateway mutually connected to external networks, and for allowing real-time access to such information in response to request from clients and data centers


  • Note 1:NEC Corporation; headquarters: Minato-ku, Tokyo; President and CEO (Representative Director): Takashi Niino
  • Note 2:National University Corporation, the University of Tokyo; address: Bunkyo-ku, Tokyo; President: Makoto Gonokami
  • Note 3:Nippon Telegraph and Telephone Corporation; headquarters: Minato-ku, Tokyo; President and CEO: Jun Sawada
  • Note 4:Educational Corporation, Waseda University; address: Shinjuku-ku, Tokyo; President: Aiji Tanaka
  • Note 5:IoT gateway: A device that integrates data collected from sensors before sending to cloud servers, and is equipped with a small-scale computing platform capable of executing applications.

Contact information

Nippon Telegraph and Telephone Corporation Research and Development Planning Department

Information is current as of the date of issue of the individual press release.
Please be advised that information may be outdated after that point.

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