KDDI has demonstrated the use of LTE broadcast to deliver low-latency connectivity for vehicles in Japan.
Nokia, a leading telecom equipment maker, said the trials are the first in the world to use LTE broadcast, implementing the evolved Multimedia Broadcast Multicast Service standard in two connected car applications, and demonstrating the potential of cellular technology to enable automated driving in the future.
KDDI’s telecom engineers conducted the trials at a rural location on the Japanese island of Hokkaido.
KDDI and Nokia focused on vehicle to network use-case and used non-integrated systems in cars interacting with sensors via the Nokia Multi-access Edge Computing (MEC) platform, which enables significantly reduced network latency, Uwe Puetzschler, head of Car2X at Nokia, said.
KDDI compared the efficiency of using LTE broadcast to the one-to-one communication enabled by LTE unicast, in two connected car applications:
Vehicle-to-network-to-vehicle (V2N2V) – in which cars maintained constant contact with the MEC system, sending real-time location, direction and speed data to roadside sensors. In an emergency situation, the driver can alert the application, with information distributed to other vehicles using eMBMS.
Network Real-Time Kinematic (network RTK) – trial of LTE to enhance automated in-vehicle navigation. It showed how eMBMS could more cost-efficiently use existing geo-location systems to communicate to many vehicles in real-time and ensure accurate navigation.
“We are pleased to demonstrate our leadership in the delivery of mobile networks for IoT and connected car communications. This is an important trial showing how the automotive industry can leverage cellular technology to enhance safety of connect vehicles on the roads,” Munefumi Tsurusawa, general manager, Connected Vehicle Technology Department, Technical Planning Division at KDDI, said.