ALEXANDRIA, Va., March 3 -- United States Patent no. 12,568,426, issued on March 3, was assigned to Nokia Solutions and Networks Oy (Espoo, Finland).

"Communication method, device and system of ambient backscattering based on Wi-Fi signals" was invented by Shang Bin Ge (Shanghai), Jun Jun Chen (Changzhou, China) and Gang Cheng (Shanghai).

According to the abstract* released by the U.S. Patent & Trademark Office: "The objective of the embodiments of the present disclosure is to provide a method, device and system for backscatter communication based on Wi-Fi signals. Wherein, a Wi-Fi signal reader device broadcasts periodically a device query message to instruct backscatter communication devices upon receiving the device query message to re...