Switch language한국어
Back to the list
TECHImpress Watch

1 Gbps millimeter wave inside a Yamanote Line train car: KDDI and JR East succeed in “pull-in” deployment

TL;DR AI

Key summary

2 min read

  1. KDDI and JR East demonstrated a new way to extend 5G millimeter-wave coverage inside a Yamanote Line train car.

  2. A glass antenna on the window received the millimeter-wave signal and re-radiated it into the cabin.

  3. The area with about 1 Gbps connectivity expanded from roughly 40% of the car to about 97%.

  4. It is described as Japan’s first success in bringing millimeter waves from outside into a train car, with possible applications in rail and indoor DX.

Read the original