ALEXANDRIA, Va., March 12 -- United States Patent no. 12,250,728, issued on March 11, was assigned to Quectel Wireless Solutions Co. Ltd. (Shanghai).

"Method applied at node for wireless communication and apparatus" was invented by Zheng Zhao (Shanghai), Ling Lyu (Shanghai) and Zhongzhi Yang (Shanghai).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method applied at a node for wireless communication and an apparatus are provided. One method includes: transmitting a first plurality of random access preambles by using a first spatial filter, wherein a first plurality of physical random access channel occasions are used for transmission of the first plurality of random access preambles; monitoring a first cont...