Samsung has accelerated its "5G" radio tests with a 7.5Gbit/s transmission to a stationary test device while pushing its "5G Rainbow" of performance and technology metrics that might help define the future wireless technology.

The South Korean giant says the 7.5Gbit/s test was the first ever undertaken outdoors on its 28GHz test network. A driving test at speeds of over 62mph on the millimeter wave testbed achieved a stable connection at 1.2 Gbit/s, Samsung said.

Here's a video from Samsung on the tests:

This pre-5G testing builds on work that Samsung was doing on 28GHz millimeter radio in 2013. Samsung said then it was getting speeds at 1 Gbit/s using a "64 element" adaptive array antenna to improve the notorious signal propagation characteristics of the high-frequency bands. (See 60GHz: A Frequency to Watch.)

Want to know more about 5G? Check out our dedicated 5G content channel here on Light Reading.

Samsung is also pushing its "5G Rainbow" parameters to help the 5G "user experience." Here's what the company says about that:

Never forget, of course, that what "5G" actually is yet to be defined by the industry. (See The 5G Landgrab and DoCoMo's 2020 Vision for 5G.)