ALEXANDRIA, Va., June 9 -- United States Patent no. 12,289,691, issued on April 29, was assigned to Lenovo (Beijing) Ltd. (Beijing).

"Power headroom report for additional SRS" was invented by Bingchao Liu (Changping District, China) and Chenxi Zhu (Haidian District, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "Methods and apparatuses for power headroom report for additional SRS are disclosed. A method at a UE comprises calculating a power headroom (PH) according to additional SRS if SRS is transmitted on the additional SRS symbol(s) in a normal subframe; and reporting at least one type of the PH calculated according to the additional SRS, Type-3 PH and Type-1 PH by a MAC CE."

The patent was filed on...