ALEXANDRIA, Va., May 5 -- United States Patent no. 12,621,747, issued on May 5, was assigned to SONAS INC. (Tokyo).

"Communication apparatus, communication method, and multi-hop relay system" was invented by Makoto Suzuki (Tokyo) and Sotaro Ohara (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A communication apparatus in a multi-hop relay system in which a packet is transmitted and received using a flooding method in a first flooding slot and a second flooding slot each including a plurality of sub-slots, the communication apparatus performs: switching a frequency channel to be used to transmit and receive a packet between a first sub-slot and a second sub-slot in the first flooding slot; and not swit...