公开(公告)号：US20240039590A1

公开(公告)日：2024-02-01

申请号：US18026433

申请日：2021-12-27

Applicant: Beijing University Of Posts and Telecommunications

Inventor： Qixun ZHANG ,  Zhiyong FENG ,  Huan SUN ,  Ping ZHANG ,  Zhiqing WEI ,  Sai HUANG ,  Yifan ZHANG

IPC: H04B7/06 ,  H04B7/08

CPC classification number: H04B7/0617 ,  H04B7/086

Abstract: A broadband millimeter wave beam tracking method based on vehicle movement trajectory recognition, which relates to the field of wireless communication. First, a rough estimate of the beam angle is obtained according to the position and attitude of two vehicles in a communication scenario at an initial moment, and a state of the vehicle is judged according to the sudden change rate of the transmitting beam angle starting from a next moment; if it is in the sudden change mode, the observation value ŷk of the received signal is calculated; if it is in the smooth change mode, the observation value I is calculated; the observation values in different modes are input into an improved particle filter algorithm for fine beam estimation, to obtain optimal values xk and uk; and the beam optimal values at the current moment are used to re-estimate a pair of the forming vector of the transmitting beam and the forming vector of the receiving beam to adjust the vehicle and the pilot signal at the next moment is transmitted; by continuously adjusting the beam forming vector at each moment, a beam tracking within an error range is obtained. The present application improves the accuracy and reliability of beam tracking in case of sudden angle change.