DoCoMo trials give a window into possible 6G tech

Japanese telco DoCoMo wants windows to be a help not a hindrance to signal propagation.
In what it claims is a world first, the operator used a ‘metasurface’ attached to a window that was able to redirect a signal coming from an indoor base station to the foot of the building outside.
Metasurfaces, like metamaterials, consist of intricate, nanoscale structures laid out in a specific pattern in order to manipulate the path that radiation – whether that be light or electromagneti