Samsung has announced a demonstration of 5G technology performance that will take place
from October 17th to 19th in Saitama, near Tokyo. With the help of Japanese operator KDDI,
Samsung has succeeded in transmitting data at peak speeds of 1.7 Gbit/s via an uplink and
downlink on a 1.5-kilometer railway line. Users can download 8K videos and stream 4K video
files. However, it will still be necessary for this to work with connected cars connected to each
other. The demonstration was carried out using several base stations installed outside,
equipped with a semi-standard 5G router. However, no information was provided on the
frequency bands used. The key to this scenario is the devices' ability to seamlessly move
between cells. At 100 km/h, the terminal connects to each antenna for a few seconds. Once
the download is initiated, data transfer is maintained by a mechanism called "handoff." This
means that the terminal can maintain the connection to the antenna even when the user is
moving at high speed.
It is important to note that this test was only carried out on a 1.5 km stretch between the two
stations. Other tests were also carried out on a moving car at 200 km/h in South Korea in
September 2017. However, ships have more complex environments, with structures that are
more difficult for electromagnetic waves to penetrate. Therefore, the technology will also need
to work in more challenging conditions.
In summary, Samsung and KDDI have succeeded in transmitting data at peak speeds of 1.7
Gbit/s on a 1.5 km railway line, allowing users to download 8K videos and stream 4K video
files.
