ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,556,589, issued on Feb. 17, was assigned to Nokia Solutions and Networks Oy (Espoo, Finland).

"Media resource optimization" was invented by Xu Chen (Qingdao, China), Maridi Makaraju (Austin, Texas) and Derek Underwood (Addison, Texas).

According to the abstract* released by the U.S. Patent & Trademark Office: "An apparatus includes a transceiver to support a media flow involving a user equipment and an Internet Protocol (IP) Multimedia Subsystem (IMS) network that are connected via a media path that traverses a first realm associated with the user equipment, a second realm, and a third realm associated with the IMS network. In some cases, the apparatus includes a processor to establi...