ALEXANDRIA, Va., June 9 -- United States Patent no. 12,289,626, issued on April 29, was assigned to Datang Mobile Communications Equipment Co. Ltd. (Beijing).

"Dual/multi-connectivity-based secondary node addition/replacement method and device" was invented by Nan Yan (Beijing) and Chandrika Kumudinie Worrall (Beijing).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present application relates to the technical field of wireless communications, and disclosed are a dual/multi-connectivity-based secondary node (SN) addition/replacement method and device, for use in solving problems that in a dual/multi-connectivity scenario of a wireless communication, a process of adding or modifying an SN takes a long time ...