South Korea plans 5G wireless network by 2020

South Korea's science ministry announced plans to invest a whopping $1.5 billion (1.6 trillion won) in building a nationwide 5G wireless service.

Once developed, the network will permit Gigabit (1 Gb/s) transmissions on compatible mobile devices. Put in layman's terms, that's fast enough to download an entire movie in one second, or about 1,000 times faster than existing 4G LTE networks. Of course, a project like this will take time -- six years. But a trial service could be rolled out in certain markets by 2017.