公开(公告)号：US20240421860A1

公开(公告)日：2024-12-19

申请号：US18707021

申请日：2021-11-24

Applicant: NTT DOCOMO, INC.

Inventor： Fan Wang ,  Xin Wang ,  Xiang Li ,  Xiaolin Hou ,  Lan Chen ,  Satoshi Suyama ,  Tatsuki Okuyama

IPC: H04B7/04 ,  H04L5/00 ,  H04W64/00

Abstract: Provided in the present disclosure are a terminal and a sending device in a communication system. The sending device includes: a receiving unit, which is configured to receive position information of a terminal, and a control unit, which is configured to determine a first codeword in a first codebook and offset information according to the position information. The first codeword indicates initial phases of at least some array elements in a reconfigurable intelligent surface (RIS). The offset information indicates an offset relative to the at least one of the at least some array elements, the initial phases, and a reference position of the RIS.