Ando Hazama will conduct a demonstration experiment of high-capacity, high-speed data communication inside a tunnel at the Tsubakihara Tunnel construction site of the Tokai-Hokuriku Expressway (four-lane expansion) starting in March, as part of NTT’s use case verification for applying IOWN to construction sites.

A high-capacity, high-speed communication network will be constructed inside the tunnel, and actual operational loads will be reproduced using 8K resolution 360-degree cameras, laser scanners, and dummy data generators.

The experiment will reproduce delays between a 1,500-meter section of the mountain tunnel and a remote base 1,000 kilometers away, and conduct high-load tests when multiple cameras are connected simultaneously. Technical requirements such as communication bandwidth, communication delay, jitter (a phenomenon where the timing of signals that should be constant in digital signals and communications shifts or fluctuates), packet loss, and error rate will be quantitatively measured.

Remote management is required in mountain tunnel construction due to disaster risks and other factors.

On the other hand, conventional field networks have faced the challenge of reliably transmitting high-definition video and large amounts of point cloud data in real time, which are essential for field engineers to make construction decisions in remote management.

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