March 30, 2021 Technical Conditions related to Measurement and Calculation Methods of Intensity of Radio Waves Emitted from New Wireless Systems, such as Underground Base Stations

Partial Report from Information and Communications Council

The Ministry of Internal Affairs and Communications (MIC) has today received a partial report from the Information and Communications Council (Chaired by UCHIYAMADA Takeshi, Chairman of the Board of Toyota Motor Corporation). The report specifies some of the technical requirements related to measuring and calculating the intensity of radio waves emitted from new wireless systems, such as underground base stations. These requirements are part of technical requirements related to measurement and calculation methods for the intensity of radio waves emitted from base stations (Inquiry No. 2045 of January 21, 2020) since January 2020.

1. Background

In mobile communication 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 was a need to evaluate the conformity of antennas installed at lower positions with Japan’s radio wave protection guidelines.
Considering the situation, the Information and Communications Council has been deliberating on the technical requirements for measuring and calculating the strength of radio waves emitted from underground base stations. In this connection, MIC has today received a partial report as a result of the deliberation.

2. Outline of the report

The published material is in Japanese only.

3. Future plans

MIC will make institutional development based on this partial report promptly.

Contact

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International Policy Division, Global Strategy Bureau, MIC

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