Flying Solar Platform to Test 5G Network Augmentation

New Mexico-based company Sceye plans to launch a solar-powered airship into the stratosphere as early as August for tests aimed at expanding 5G communication networks over Japan's coast. This 'flying solar platform,' under development by Sceye, is a 'High Altitude Platform Station' (HAPS) capable of covering a wide area from high altitudes and transmitting signals with less energy than satellites. The approximately 60-meter-long airship, filled with helium and equipped with solar panels, will remain in the stratosphere (about 18 km above sea level) after arriving off the Japanese coast, supporting data communications with a custom antenna. Sceye's CEO explained that the platform can provide communication services in a space-like environment without costly satellite launches or complex orbital operations.

Maintaining a stable platform in the stratosphere presents significant technical challenges. Sceye's airship must be light enough to stay aloft yet robust enough to carry its necessary systems. It needs to store enough energy from solar power during the day and secure power to operate electric fans that can correct its position if drifting due to wind at night or during adverse weather. Sceye demonstrated its ability to overcome these technical hurdles during a test flight in 2024, when the airship remained airborne for 12 days, performing its mission from various locations.

Companies like Sceye developing HAPS (High Altitude Platform Stations) are part of a competitive field that includes Airbus subsidiary Aalto, with goals ranging from providing internet access in disaster areas to Earth observation. When terrestrial 5G networks become saturated or face coverage expansion limitations, HAPS in the stratosphere can function like airborne mobile communication base stations, relaying data. CEO Fransen envisions that seeing HAPS flying in the sky will one day become as commonplace as seeing ships in a harbor or trains on a railway track. Besides Sceye and Aalto, several other companies are vying in the HAPS development race. These platforms have potential applications beyond internet services, including Earth surface monitoring and disaster surveillance. This development suggests that future communication infrastructure will evolve into a multi-layered structure encompassing terrestrial networks, satellite networks, and HAPS.