ALEXANDRIA, Va., May 5 -- United States Patent no. 12,618,957, issued on May 5, was assigned to Koninklijke KPN N.V. (Rotterdam, Netherlands).
"Time of arrival estimation" was invented by Christiaan Christoffel Johan Tiberius (Rotterdam, Netherlands), Gerardus Johannes Maria Janssen (Rotterdam, Netherlands) and Jeroen Koelemeij (Rotterdam, Netherlands).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method is disclosed for determining a signal's time of arrival at a receiver device, the signal being transmitted by a transmitter device to the receiver device. The method comprises correlating the signal as transmitted by the transmitter device and the signal as received by the receiver device with each other. ...