April 16, 2021 Appeal for Opinions on Drafted Partial Revision to Notice on Measurement and Calculation Methods for Intensity of Radio Waves Emitted from Base Stations

The Ministry of Internal Affairs and Communications (MIC) will make an appeal for opinions from Saturday, April 17 through Friday, May 21, 2021, on a drafted partial revision to the Notice on Measurement and Calculation Methods for Intensity of Radio Waves Emitted from Base Stations for institutional development toward the introduction of underground base stations.

Overview

In mobile communications systems used in Japan, many mobile phone base stations have been installed to achieve high-speed and reliable connections in a wider area. On the other hand, in scenic spots, the installation of base stations was sometimes restricted in consideration of the scenery.
Therefore, mobile phone carriers consider the introduction of underground base stations to cover an area above the ground. In that case, there is a need to evaluate the conformity of antennas installed at lower positions with Japan’s radio wave protection guidelines.
With consideration of the above situation, the Subcommittee on Electromagnetic Environment for Radio-wave Utilization of the Department on Information and Communications Technology under the Information and Communications Council studied technical requirements related to measuring and calculating the intensity of radio waves emitted from underground base stations. In this connection, MIC received a partial report on March 30, 2021, from the Information and Communications Council. Considering the contents of this report, MIC has prepared an amendment to the Notice on Measurement and Calculation Methods for Intensity of Radio Waves Emitted from Base Stations and has decided to make this appeal for opinions on the draft.