NTT DoCoMo and AGC say they have achieved 8 Gbps 5G communications with a fast-moving vehicle equipped with “vehicle glass mounted antennas” (a.k.a. on-glass antennas) in a field trial conducted in conjunction with Ericsson Japan.
The 5G 28 GHz band compatible on-glass antennas used in the field trial were designed and developed by AGC. The antennas are not easily seen from the outside and can be installed on glass surfaces without affecting the vehicle design.
Radio waves in the 28 GHz band have large propagation loss. By installing an on-glass antenna on the vehicle, radio waves above 6 GHz can be transmitted and received using the beamforming function, which concentrates radio waves in a specific direction, and the MIMO function, which improves communication speed by simultaneously transmitting different data from multiple antennas. This allows stable, high-speed communications even for vehicles in motion, DoCoMo says.
For the field trial, 5G high-speed communications using the beamforming and MIMO functions was performed with a vehicle equipped with on-glass antennas.
The trial was held at the National Institute for Land and Infrastructure Management in Ibaraki Prefecture, Japan. While moving at high speeds of approximately 100 km/h, a maximum communication speed of 8 Gbps was achieved, and a maximum of 11 Gbps was achieved at a speed of approximately 30 km/h.
Video is available.