公开(公告)号：US20240421890A1

公开(公告)日：2024-12-19

申请号：US18706275

申请日：2021-11-24

Applicant: NTT DOCOMO, INC.

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

IPC: H04B7/08 ,  H04B7/06

Abstract: Provided in the embodiments of the present disclosure are a receiving device and a transmitting device. The receiving device according to the embodiments of the present disclosure includes: a control unit, configured to determine information on intensity of a light-of-sight (LOS) channel component in a communication channel; and a sending unit, configured to send the determined information to a transmitting device. The transmitting device according to the embodiments of the present disclosure includes: a transceiving unit, which includes a first antenna array; and a control unit, configured to obtain information about the intensity of a light-of-sight (LOS) channel component in a communication channel, and to determine a configuration mode of the first antenna array according to the information.

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.

公开(公告)号：US20240283498A1

公开(公告)日：2024-08-22

申请号：US18567648

申请日：2021-07-22

Applicant: NTT DOCOMO, INC

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

IPC: H04B7/0456 ,  H04W16/26

CPC classification number: H04B7/0456 ,  H04W16/26

Abstract: The present disclosure provides a reconfigurable intelligent surface, including: a receiving unit which receives subarray division setting information sent from a base station; a reconfigurable panel; and a processing unit, which divides, based on the subarray division setting information, the reconfigurable panel into M subarrays, where M is a positive integer greater than 1, wherein, the subarray division setting information is determined based on a distance between a target device and the reconfigurable panel, N subarrays of the M subarrays serve one target device, and N is a positive integer greater than 1 and less than or equal to M.

公开(公告)号：US20240275433A1

公开(公告)日：2024-08-15

申请号：US18568135

申请日：2021-07-22

Applicant: NTT DOCOMO, INC.

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

IPC: H04B7/04 ,  H04W64/00

CPC classification number: H04B7/04026 ,  H04W64/00

Abstract: The present disclosure provides a base station. The base station includes: a control unit configured to determine configuration information regarding a reconfigurable surface device based on location of a user equipment; and a transmitting unit configured to send the configuration information to the reconfigurable surface device so that the reconfigurable surface device determines a codebook used by the reconfigurable surface device based on the configuration information.

公开(公告)号：US20250007573A1

公开(公告)日：2025-01-02

申请号：US18706292

申请日：2021-11-24

Applicant: NTT DOCOMO, INC.

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

IPC: H04B7/0456 ,  H04B7/0404

Abstract: Embodiments of the present disclosure provide a receiving device and a transmitting device. The receiving device according to the embodiments of the present disclosure includes: a transceiving unit, configured to receive multiple un-precoded data streams sent through a plurality of antenna ports in a transmitting device; and a control unit, configured to determine an equivalent digital baseband channel matrix for a respective one of the plurality of antenna ports based on information on the intensity of a line of sight (LOS) channel component, and demodulate the multiple data streams according to the equivalent digital baseband channel matrix. The transmitting device according to the embodiments of the present disclosure includes: a control unit, configured to determine multiple un-precoded data streams for a receiving device; and a transceiving unit, including a plurality of antenna ports, respective ones of the plurality of antenna ports being configured to send the multiple data streams.