They are experiencing AR services with giga-class mobile backhaul technology developed by ETRI researchers.[사진=ETRI 제공]
A domestic research team succeeded in demonstrating an augmented reality (AR) service with mobile backhaul communication technology in the subway through international joint research with the UK. Even in moving environments such as buses and subways, you can enjoy a variety of multimedia smoothly, such as high-definition video streaming.
The Electronics and Telecommunications Research Institute (ETRI) announced on the 10th that at the end of last month, it has successfully demonstrated 5G service using an ultra-high frequency wireless backhaul system within the subway line between Jamsil Station and Songpa Station of Subway Line 8.
The demonstration on this day is 1.9Gbps, which is 30 times faster than the previous one. It is a speed that 190 people can use AR immersive multimedia service at the same time.
Currently, the average download speed of the wireless LAN service provided by the mobile communication service provider in the subway is 58.50 Mbps, which is even lower during commute times when passengers are crowded. There is a limit to using large-capacity multimedia services.
ETRI installed a base station system in five sections of the subway tunnel, a gateway and a server in the communication room of Jamsil Station, and a terminal system in the cab of the subway to create a communication demonstration environment. In order to check whether the linearity exceeds the limit of the strong frequency characteristics and performs sufficiently, the section between Jamsil Station and Songpa Station of Subway Line 8, which has the highest curvature in Korea, was selected.
To demonstrate the AR immersive multimedia service wearing the latest shoes, a transmission rate of about 10Mbps is required, but ETRI announced that it has confirmed the maximum transmission rate of 1.9Gbps between the base station system and the terminal.
The ETRI researchers explained that the beamforming technology that concentrates the transmission signal on the required terminal and the handover technology that naturally maintains the connection without losing data even when the base station connected to the terminal changes while the subway moves. .
It started with the result of the 3rd Korea-English ICT Policy Forum held in February 2018, and was the result of international joint research for two years from April 2019. In Korea, it developed a wireless backhaul system based on ultra-high frequency subways, and in the UK, it developed 5G-based AR services. It was promoted as an international joint research project between Korea and English in the broadcasting and communication industry technology development project jointly promoted by the Ministry of Science, ICT and ICT and the UK’s Digital Culture, Media and Sports (DCMS).
ETRI Director Kim Myung-joon said, “Through this demonstration, we have confirmed that high-speed wireless LAN services can be provided in commercial public transport networks such as subways. Using this technology as a foothold, it has a great meaning in terms of providing an opportunity for domestic companies to advance overseas in the future. There is,” he said.
British Ambassador Simon Smith said, “The 5G technology developed by Korea-English joint research is expected to enter the demonstration stage in the UK next month. The technology will be commercialized in the future with more technology exchanges, and it is only in Korea and the UK No, we look forward to being able to successfully settle all over the world.”
Meanwhile, the ETRI researchers plan to carry out additional research and development so that the high-speed mobile backhaul network can be applied even in various railroad environments. In addition, efforts to find a point of contact for international research exchange and convergence research, such as forums between Korean and English, will also be continued.