ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,425,271, issued on Sept. 23, was assigned to Silicon Laboratories Inc. (Austin, Texas).

"Efficient ranging algorithm for high accuracy distance measurements" was invented by Sauli Lehtimaki (Nummela, Finland).

According to the abstract* released by the U.S. Patent & Trademark Office: "A system and method for determining the distance between two wireless network devices is disclosed. The present system utilizes an algorithm that relies on the power ratio between the trial signal power and the remaining signal power. Remaining signal power is defined as the power that is left after subtracting the trial signal power from the total signal power. This algorithm computes the channel freq...