ALEXANDRIA, Va., June 5 -- United States Patent no. 12,278,680, issued on April 15, was assigned to ZTE Corp. (Shenzhen, China).

"Channel state information reference signal transmission method and apparatus" was invented by Yong Li (Shenzhen, China), Hao Wu (Shenzhen, China), Zhaohua Lu (Shenzhen, China) and Yuxin Wang (Shenzhen, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided in embodiments of the present disclosure are a Channel State Information Reference Signal (CSI-RS) transmission method and apparatus. The method includes: configuration information is transmitted to a terminal, the configuration information including the number of Resource Blocks (RB) in an A-type RB group, and the A-type...