InterBEE REVIEW2011 (EN)

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63 “White space is the term used to describe frequency bands that are estab-lished to prevent interference between broadcast waves on neighboring frequencies. These are also described as guard bands. We are seeking ways to use new technologies that will not result in interference between neighboring broadcast waves. There are pilot proj-ects being implemented to use white space for broadcasting in extremely limited and localized areas. This is the second time for the White Space Com-mittee of the Ministry of Internal Affairs and Communications to exhibit at Inter BEE. Last year we participated out of our desire to boost awareness of the term “white space,” and this year we have been able to provide concrete examples on ways in which white space is used by exhibiting the pilot tests.” “At the time of the Great East Japan Earthquake white space was used to broadcast useful information to the disaster-affected areas in the city of Minamisoma, and therefore gained attention as a useful method of broad-casting to the community in times of disaster. This is an increasingly active movement that seeks to combine vari-ous media, including radio, as a new form of broadcasting that can be used as a tool for providing communities with information.” “On July 24th, 2011, with the excep-tion of the three disaster-affected prefectures in the Tohoku region, terres-trial analog broadcasting was stopped and all regions moved to full digital broadcasting. As a result of this, all broadcasting transferred to UHF band frequencies, and there have been efforts seeking to test new methods of broad-casting that use the VHF band frequen-cies previously used by analog broad-casting. This represents a dramatic change in the way that broadcasting is done. It is changing not only television, but also radio.” “At the same time, due to the diversi-fication of terminal devices, such as smart phones, various new services and businesses have spread, improving the Explosive growth in the use of radioAiming to construct a new framework,incorporating uses in disaster response■Exhibit by the White Space Committee 　at Inter BEE■The usage of radio waves following 　the completion of the transition to 　digital terrestrial transmission

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