Rakuten Mobile proposal selected for Jaxa space strategy | Computer Weekly
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Rakuten Mobile proposal selected for Jaxa space strategy | Computer Weekly
"It is also designed to ensure uninterrupted connectivity for applications such as autonomous vehicles and drones, regardless of location. Research and development for the satellite and terrestrial network integration for seamless frequency sharing-themed project is eligible for up to ¥11bn (£53m) in funding. The project is planned to run between March 2026 and March 2031, and this period runs from the date of the funding grant decision through to the end of the fiscal year, in which the first stage-gate evaluation is completed."
"The R&D behind the project aims to develop frequency-sharing technology for the handover between satellite communications and terrestrial wireless networks through artificial intelligence (AI)-based next-gen satellite communications. The researchers note that in direct satellite-to-mobile communication, the same frequency bands are frequently shared with terrestrial networks, requiring interference management based on real-time conditions. Advanced correction is particularly crucial for voice and video calls due to Doppler effect and propagation delays."
JAXA selected a joint proposal from Rakuten Mobile and the University of Tokyo to develop dynamic frequency sharing technology for seamless handover between satellite and terrestrial networks. The Space Strategy Fund supports multi-year projects in transportation, satellites and related technologies, and exploration. The project targets uninterrupted connectivity for autonomous vehicles and drones regardless of location and is eligible for up to ¥11bn (£53m) in funding. The planned period runs March 2026–March 2031 and covers the grant decision through the fiscal year of the first stage-gate evaluation. R&D will focus on AI-based next-generation satellite communications to manage shared frequency bands, real-time interference, Doppler effects, and propagation delays for voice and video calls.
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