ALEXANDRIA, Va., May 26 -- United States Patent no. 12,640,972, issued on May 26, was assigned to VIVO MOBILE COMMUNICATION Co. LTD. (Dongguan, China).
"Preamble sequence mapping method and apparatus, and terminal" was invented by Qi Hong (Dongguan, China), Gen Li (Dongguan, China) and Kai Wu (Dongguan, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A preamble sequence mapping method and a terminal are provided. The method includes: determining, by a terminal according to a rule for sorting T second preamble sequences, a target index of a second preamble sequence. The T second preamble sequences are all or some of sequences obtained after the terminal performs code-division on M first preamble sequence...