Key Takeaways
- Japan is a prime location for testing High-Altitude Platform Stations (HAPS) due to its unique geography and remote islands.
- Aalto HAPS is partnering with Japanese mobile network operators to provide 5G connectivity to remote areas using its Zephyr platform.
- Sceye, a New Mexico-based company, is also testing its stratospheric connectivity service in Japan using a solar-powered helium-filled airship.
- HAPS technology has the potential to transform Japan’s communications ecosystem and provide connectivity to hard-to-reach areas.
- The technology can also support emergency response efforts and provide high-speed internet to smartphone users without the need for specialized terminals.
Introduction to HAPS in Japan
Japan’s unique geography, with its numerous remote and mountainous islands, makes it an ideal location for testing High-Altitude Platform Stations (HAPS). Many of these islands are too costly to connect with traditional terrestrial cell towers, making HAPS a viable solution for providing connectivity to these areas. Aalto HAPS, a company specializing in HAPS technology, is partnering with Japan’s largest mobile network operators, NTT DOCOMO and Space Compass, to provide 5G connectivity to these remote areas. The partnership aims to use Aalto’s Zephyr platform as part of next-generation telecommunication infrastructure, which has the potential to transform Japan’s communications ecosystem.
Zephyr: A Cell Tower in the Sky
Zephyr, Aalto’s HAPS platform, will function like a traditional cell tower, but instead of being located on the ground, it will be positioned high above the planet. This will enable it to beam high-speed 5G connectivity to smartphone users without the need for specialized terminals. According to Aalto’s representative, Aubourg, the user experience will be seamless, with no difference when switching from the terrestrial network to the HAPS network. The frequency and network will remain the same, providing a consistent and reliable connection. This technology has the potential to revolutionize the way people communicate in remote areas, providing them with access to high-speed internet and enabling them to stay connected with the rest of the world.
Sceye: A New Player in the HAPS Market
Sceye, a New Mexico-based company, is also eyeing Japan for pre-commercial trials of its stratospheric connectivity service. The company has developed a solar-powered helium-filled airship, which has undergone extensive testing in 2025. Sceye is working with Japanese telecommunications giant SoftBank, which is betting on HAPS to take its networks to another level. Sceye’s founder and CEO, Mikkel Frandsen, believes that his company’s airship technology has an advantage over traditional balloon-based systems, such as Google’s Loon. Frandsen argues that Loon’s system relied on favorable winds to stay over a target area, resulting in unpredictable performance and requiring a large number of balloons to ensure coverage.
Advantages of Airship Technology
Frandsen explains that Sceye’s airship technology has several advantages over traditional balloon-based systems. The airship’s controllable shape, intelligent avionics, and innovative batteries enable it to maintain its position and stay over a target area with greater precision. The airship can "point into the wind" and maintain its position, even in unfavorable weather conditions. Additionally, the airship’s large surface area provides enough space to lift heavy payloads, host solar panels, and batteries, allowing it to maintain power through day-night cycles. This enables Sceye to stay over an area of operation while maintaining altitude, providing a reliable and consistent connection.
Conclusion and Future Prospects
The use of HAPS technology in Japan has the potential to transform the country’s communications ecosystem, providing connectivity to hard-to-reach areas and supporting emergency response efforts. The partnership between Aalto HAPS and Japanese mobile network operators, as well as Sceye’s entry into the market, demonstrates the growing interest in HAPS technology. As the technology continues to develop and improve, it is likely that we will see more widespread adoption of HAPS in Japan and other countries with similar geography. The potential benefits of HAPS technology are significant, and it will be exciting to see how it evolves and impacts the way people communicate in the future.