December 8, 2025 Technical Requirements for Ka-band Non-geostationary Satellite Communication Systems Using Satellite Constellation(s) Orbiting at an Altitude of 600 km (hereinafter the "Ka-band Technical Requirements")

- Partial Report from the Information and Communications Council -

Note: The published materials are in Japanese only.

　Today, the Ministry of Internal Affairs and Communications (MIC) received the partial report from the Information and Communications Council, chaired by ENDO Nobuhiro, Special Advisor to NEC Corporation, regarding the Ka-band Technical Requirements. These requirements form part of the "Technical Requirements for Mobile Satellite Communications Systems Using Non-geostationary Satellites" (Telecommunications Technology Council Consultation No. 82 dated September 25, 1995).

1. Background

　The Ka-band non-geostationary satellite communication systems using satellite constellation(s) orbiting at an altitude of 600 km are expected to meet the diverse communication needs of various users, including the provision of high-speed Internet services, and be used as backhaul lines for mobile communications and backup lines in emergencies such as disasters. Since January 2024, the Information and Communications Council had been studying technical requirements. It has compiled the results of its study as the partial report, and submitted it to the Ministry of Internal Affairs and Communications (MIC) today.

2. Future plans

Based on the partial report, the MIC will promptly develop the relevant provisions.