If a report from The Guardian is to be believed, Google has yet another Internet-in-the-sky program in the works. This one is called "Project Skybender," and it aims to outfit drones with millimeter wave transceivers—radios that work in a slice of the spectrum that could be used in next-generation "5G" networks.

Further Reading Next-gen cellular networks could use spectrum all the way up to 71GHz

Apparently, Google currently has drones whizzing around the airspace of Spaceport America in New Mexico, where the project shares a hangar with Virgin Galactic. Currently, the drone hardware seems to be an "optionally piloted" commercial aircraft called the " Centaur ," along with the solar-powered drones from Google Titan . Both aircraft are "plane like" drones with wings and front-facing propellers.

The report says that Google is using the drones to "experiment with millimeter-wave radio transmissions" and that the project "ultimately envisages thousands of high altitude 'self-flying aircraft' delivering Internet access around the world." The FCC has said that 5G millimeter wave networks could hit speeds between 1Gbps and 10Gbps. Currently, engineers are working around natural distance and signal propagation issues inherent in the higher frequency. While millimeter-wave transceivers might eventually be integrated into a smartphone, Google is presently using several stationary antennas around Spaceport America.

The company already has Project Loon, a "cell tower in the sky" program that uses high-altitude balloons to beam 4G LTE down to users. Last week we wrote about Google's FCC filings for a mysterious nationwide airborne network, but that still seems to be Project Loon, not Project Skybender. The filings that surfaced last week asked for two years of testing in the 71-76GHz and 81-86GHz bands, while The Guardian says Google has permission from the FCC to test this project at 28GHz until July. Google first starting flying the Titan drones in New Mexico in 2014, but back then it was testing in the 900MHz spectrum.

We've asked Google for a comment, and we'll post an update if we get a response.