Ericsson will continue to test a variety of modems to ensure it can provide robust LTE networks for rail applications
Bombardier has successfully completed trials of LTE networks for railway solutions at simulated speeds of up to 200 kilometres per hour.
The aerospace and transportation company partnered with Ericsson to conduct 11 laboratory tests to assess whether LTE networks could support communications-based train control (CBTC) and “multiservice solutions”.
CBTC uses high-resolution location determination and high-capacity data communications such as those enabled by LTE networks to support automatic train protection, operation and supervision functions. With more accurate information about the exact positions of trains, operators can manage traffic in a more efficient and safe manner.
Examples of “multiservice solutions” include closed-circuit television (CCTV), voice, platform information, advertising and Wi-Fi for passengers.
According to the partners, CBTC systems are more reliable than older train control systems, require less wayside equipment, have built-in redundancy features, and enable operators to make optimal use of tracks and trains by responding to demand more swiftly and efficiently.
In the tests, the LTE networks achieved uplink and downlink latencies way below the threshold of 100 milliseconds and packet losses approaching zero.
"We will continue to test a variety of modems to ensure we can provide robust LTE networks for rail applications,” said Charlotta Sund, head of customer group industry & society, Ericsson.
“We aim to develop solutions that ensure enhanced rail safety through communications-based train control and CCTV, as well as enhanced entertainment for passengers through services such as voice, platform information, advertising and Wi-Fi."
Quality of service capabilities built into Ericsson’s equipment also allowed for the preemption and prioritisation of mission-critical railway services.