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KOREAN   vol.30 2015.01.09
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 Headline news
New Technology Promises 100 Times Faster Subway Internet Service
On June 30, ETRI successfully demonstrated mobile hotspot network (MHN) technology on a national highway near Daejeon Metropolitan City. This MHN technology can provide 100 times faster data transmission compared to the existing WiBro-based mobile wireless backhaul.

Researchers at ETRI have now enabled giga-scaledata ratebyproviding mobile wireless backhaul withmillimeter (mm) wave for the first timein the world. Therefore, this technology can be effectively utilized in thesectors for subway trains or KTX, Korea’s high-speed railway, where a largenumber of users collectively move at a speed as high as 300km/h.

In the demonstration, the researchers succeeded in transmitting500Mbpsdata including HD video from a moving vehicleused asa base station toa terminal vehicle without any disruption for a distance of more than onekilometer.
Although only one base-station vehicle and one terminal vehicle were used for this demonstration on the road, ETRI explained that it would be able to realize 1Gbps transmission for each train in the demonstration scheduled for Seoul subway lines at the end of 2015 by enabling communication at both the front and rear ends of a train in some sections of Line 8.

Using such extraordinary bandwidth, the MHN technology will allow hundreds of customers to enjoy HD video streaming service at the same time, with a speed of tens of megabytes per person.

“When commercialized early next year, this technology will significantly benefit small and medium-sized businesses in related fields,” said Dr. Il Gyu Kim, Managing Director of the Giga Communication System Research Section 2. “And we are expecting that the technology will also enter the global markets when it is selected as an international standard as a result of current efforts.” The MHN technology is also projected to be applied not only to subway and KTX, but also to buses and ships in the future.
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