ALEXANDRIA, Va., April 9 -- United States Patent no. 12,273,778, issued on April 8, was assigned to AT&T Intellectual Property I LP (Atlanta).

"Primary cell switching in carrier aggregation" was invented by Wen Yang (Bellevue, Wash.), Hongyan Lei (Plano, Texas), Ye Chen (Marietta, Ga.) and Yupeng Jia (Austin, Texas).

According to the abstract* released by the U.S. Patent & Trademark Office: "The disclosed technology is directed towards switching the primary cell in a carrier aggregation scenario to improve performance. Measurement data of a mobile device (user equipment) is evaluated with respect to one or more various criteria such as cell carrier bandwidth, cell carrier load, cell-related capability and other carrier data (e.g., dynamic...