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Message Transmission without Cellular Coverage: En Route to Effective Communications in Disaster Areas

Professor Nei Kato and Associate Professor Hiroki Nishiyama's research group at the Graduate School of Information Sciences, Tohoku University, conducted an experiment using 27 smartphones at the Tohoku University, Aobayama Campus (Aoba-ku, Sendai) on February 8, 2013 and successfully relayed messages using only the wireless connection (WiFi) capability without using the cellphone carrier network. The success of the experiment shows that it is possible to relay messages via smartphones having WiFi capability even in the areas without cellular service. This is the first technique, in which the smartphones utilize information such as remaining battery, accelerometer, and surrounding smartphones information to decide the appropriate transmission mode. With this technique, it is one step closer to being able to establish a network that the disaster victims or public event participants can easily access anywhere, anytime, and connect to anyone.

The experiment was carried out successfully due to the continuous research efforts contributed by Tohoku University. In addition, this experiment is a part of the project "Research and development of technologies for realizing disaster-resilient networks" consisting of designing and evaluating the prototype network, which is composed of the interconnections between user devices. The project is represented by Professor Fumiyuki Adachi from Graduated School of Engineering, Tohoku University, and supported by Ministry of Internal Affairs and Communications.


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Related Researcher's Profile
Message Transmission without Cellular Coverage, "Smartphone de Relay"
http://www.rpip.tohoku.ac.jp/seeds/profile/97/lang:en/
update: 2013.02.18