ALEXANDRIA, Va., March 17 -- United States Patent no. 12,581,344, issued on March 17, was assigned to Cisco Technology Inc. (San Jose, Calif.).

"Multiple access point WiFi sounding" was invented by Matthew A. Silverman (Shaker Heights, Ohio), John M. Swartz (Lithia, Fla.), Malcolm M. Smith (Richardson, Texas) and Brian D. Hart (Sunnyvale, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Techniques for sounding for wireless communication include initiating staggered sounding between a plurality of wireless access points (APs) and a plurality of wireless stations (STAs), including transmitting, from each AP of the plurality of APs, a sounding trigger to a respective one or more of the plurality of STAs, w...