ALEXANDRIA, Va., March 19 -- United States Patent no. 12,255,740, issued on March 18.

"Group-based acknowledgment feedback techniques for wireless communications" was invented by Mostafa Khoshnevisan (San Diego), Jing Sun (San Diego), Kapil Bhattad (Bangalore, India) and Xiaoxia Zhang (San Diego).

According to the abstract* released by the U.S. Patent & Trademark Office: "Methods, systems, and devices for wireless communications are described that support group-based acknowledgment feedback techniques. Two or more different groups of downlink transmissions may each have an associated group-based acknowledgment feedback, and a base station may transmit downlink control information to a UE that indicates one or more parameters that are used...