公开(公告)号：US11283495B2

公开(公告)日：2022-03-22

申请号：US17393068

申请日：2021-08-03

Applicant: Beijing University of Posts and Telecommunications

Inventor： Wenjun Xu ,  Jinglin Zhang ,  Hui Gao ,  Zhiyong Feng ,  Zhi Zhang ,  Jiaru Lin

IPC: H04B7/0426 ,  H04B7/0456 ,  H04B7/06 ,  H04W4/02 ,  H04W4/40

Abstract: Disclosed are methods for beam tracking. In the methods, a transmitting unmanned aerial vehicle (UAV) receives motion state information (MSI) of a receiving UAV and determines a first beam angle from the transmitting UAV to the receiving UAV according to the MSI of the receiving UAV. Then the transmitting UAV selects a codeword from a codebook according to the first beam angle. Finally, the transmitting UAV determines an activated sub-array and a beam-forming vector of the CCA according to the size of the activated sub-array corresponding to the sub-codebook to which the codeword belongs, a second beam angle corresponding to the codeword and a location of a central antenna element of an activated sub-array corresponding to the codeword and transmits information using the beam-forming vector. One or more examples of the present disclosure also provide a method for beam tracking implemented by the receiving UAV, methods for generating a codebook.