ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,474,434, issued on Nov. 18, was assigned to Telefonaktiebolaget LM Ericsson (publ) (Stockholm).

"Methods and apparatus for positioning of a moving unmanned aerial vehicle" was invented by Torbjorn Wigren (Uppsala, Sweden) and Sholeh Yasini (Sundbyberg, Sweden).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method of determining the position of a moving unmanned aerial vehicle (UAV) is provided. The method comprises obtaining, for each of three or more base stations, one or more measurements of a carrier frequency offset (CFO) for one or more signals sent between a moving UAV and the respective base station. The method further comprises inputting the CF...