NTT Demonstrates Delay Reduction Technology for Remote Drone Video Transmission

May 15, 2026
NTT, NTT-ME, and NTT e-Drone Technology have developed a method to reduce delay variation in wireless segments, improving video stability for remote drone operations between sites 60 km apart in Fukushima Prefecture.

NTT, NTT-ME, and NTT e-Drone Technology announced in a press release that they have developed a technology to reduce delay variation in wireless segments, enabling stable video transmission for remote drone operations. The system was successfully demonstrated between Minamisoma City and Koriyama City in Fukushima Prefecture, approximately 60 kilometers apart, using Local 5G and FLET'S VPN connections.

The demonstration confirmed that reducing delay variation improved video quality and allowed precise remote drone control without on-site personnel. When the technology was applied, video distortion during high-load transmission decreased from 12 percent to 5 percent. The average travel time for a drone movement also improved from 35 seconds under visual operation to 32 seconds through remote operation.

The system works by collecting traffic data from the wireless base station, analyzing video rate changes, and applying shaping control in the optical network device to correct frame intervals. This coordinated control across wireless and optical segments stabilizes video transmission and minimizes distortion.

NTT implemented the stabilization technology and verified its effectiveness, NTT-ME designed and operated the Local 5G system, and NTT e-Drone Technology provided the drone and confirmed its operability beyond visual line of sight. The technology will be exhibited at Tsukuba Forum 2026 and is expected to support remote inspections and labor-saving operations across multiple industries.

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