ALEXANDRIA, Va., June 18 -- United States Patent no. 12,328,704, issued on June 10, was assigned to Nokia Technologies Oy (Espoo, Finland).

"Position estimation" was invented by Oana-Elena Barbu (Aalborg, Denmark), Benny Vejlgaard (Gistrup, Denmark), Johannes Harrebek (Aalborg, Denmark) and Istvan Zsolt Kovacs (Aalborg, Denmark).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method, apparatus and computer program is described comprising: obtaining reference signals received at a plurality of nodes of a communication system from a user device; generating signal signature matrices based on real and imaginary components of the obtained reference signals; and generating a first three-dimensional position estima...