South Korea will inject 1.6 trillion won (US$1.49 billion) through 2020 with local firms to build the fifth-generation network (5G) in the country, the communications technology ministry said Wednesday. The 5G network is expected to be 1,000 times faster than the existing long-term evolution (LTE) service, allowing users to download an 800-megabyte movie in one second, compared with 40 seconds on the LTE-Advanced network, currently billed as the world's fastest.