ALEXANDRIA, Va., April 15 -- United States Patent no. 12,602,859, issued on April 14, was assigned to NTT Inc. (Tokyo).
"Information processing system, ray tracing method, and program for radio wave propagation simulation" was invented by Minoru Inomata (Tokyo), Wataru Yamada (Tokyo), Nobuaki Kuno (Tokyo) and Motoharu Sasaki (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "An information processing system includes: a first ray tracing unit configured to determine a two-dimensional ray trace from a transmission point at which a radio wave is transmitted, to a reception point at which the radio wave is received; a second ray tracing unit configured to determine a three-dimensional ray trace corresponding ...