ALEXANDRIA, Va., June 9 -- United States Patent no. 12,289,609, issued on April 29, was assigned to INDIAN INSTITUTE OF TECHNOLOGY MADRAS (Chennai, India).

"Simultaneous sharing of spectrum in wireless communications" was invented by Giridhar K (Chennai, India) and Venkatesh C R (Chennai, India).

According to the abstract* released by the U.S. Patent & Trademark Office: "systems for simultaneous sharing of spectrum in wireless communications. Base Stations (BSs) of a plurality of mobile network operators in a cell may send downlink signals to their respective connected User Equipments (UEs) through a shared frequency spectrum. Further, the BSs may receive uplink signals from the UEs in the shared frequency spectrum."

The patent was filed...