South Korean operator SK Telecom, in partnership with Nokia, has announced that it has reduced latency between the handset and base station to 2 milliseconds(ms) over its LTE network. The latency between the handset and base station in the existing LTE environment is around 25ms. The newly developed 2ms latency technology is expected to facilitate the development of real-time services such as autonomous driving, AR and VR services.
According to SK Telecom, with a latency of 25ms, upon sending a stop signal to a self-driving vehicle running at 150 kilometers per hour, the vehicle travels about one meter further before it actually begins to decelerate. However, with the 2ms latency technology, the vehicle moves only 8 centimeters before it begins to slow down, which will significantly enhance the overall safety in autonomous driving.
Moreover, the low latency communication technology can support services that require real-time monitoring of remote sites and control of equipment such as disaster relief robot, and is also expected to contribute to the growth of next-generation media services such as 360° VR.
SK Telecom and Nokia have reduced the latency between LTE handset and base station from 25ms to 2ms by applying Uplink Pre-Scheduling, a technology that enables the handset to immediately transmit data to the base station, and short Transmission Time Interval (TTI), a technology that reduces data transmission time between base station and handset to about 1/7.
The companies plan to continue to cooperate to reflect the short TTI technology to the 3GPP global standards.
Source: https://www.telecompaper.com/news/sk-telecom-nokia-demo-2-ms-latency-on-lte-network--1210375