公开(公告)号：US20250048313A1

公开(公告)日：2025-02-06

申请号：US18716428

申请日：2021-12-10

Applicant: NTT DOCOMO, INC.

Inventor： Shohei Yoshioka ,  Daisuke Kurita ,  Satoshi Nagata ,  Luhua You ,  Weiqi Sun ,  Jing Wang ,  Lan Chen ,  Jinming Zhao ,  Yong Li

IPC: H04W64/00 ,  G01S19/05

Abstract: A terminal includes: a control unit configured to obtain a plurality of pieces of terminal position-related information using a plurality of reference points that are related to a non-terrestrial network; and a transmission unit configured to report the plurality of pieces of terminal position-related information to a base station.

公开(公告)号：US20250142521A1

公开(公告)日：2025-05-01

申请号：US18837801

申请日：2022-02-21

Applicant: NTT DOCOMO, INC.

Inventor： Shohei Yoshioka ,  Satoshi Nagata ,  Luhua You ,  Weiqi Sun ,  Jing Wang ,  Lan Chen ,  Jinming Zhao ,  Yong Li

IPC: H04W64/00 ,  H04L5/00 ,  H04W56/00 ,  H04W84/06

Abstract: A base station in a network system includes: a transmission unit configured to transmit a first reference signal to a terminal via a first non-terrestrial communication device; and a reception unit configured to receive information related to a reception timing at the terminal from the terminal. The transmission unit transmits information related to a propagation delay of the first reference signal and information related to the reception timing to LMF (Location Management Function), and the information related to the reception timing is a time difference between a reception timing of the first reference signal and a reception timing of a second reference signal that is transmitted from the base station or from a second base station that is different from the base station via a second non-terrestrial communication device.

公开(公告)号：US20240389040A1

公开(公告)日：2024-11-21

申请号：US18689033

申请日：2021-09-09

Applicant: NTT DOCOMO, INC.

Inventor： Shohei Yoshioka ,  Daisuke Kurita ,  Satoshi Nagata ,  Weiqi Sun ,  Jing Wang ,  Wenjia Liu ,  Lan Chen ,  Jinming Zhao ,  Yong Li

IPC: H04W56/00 ,  H04L5/00

Abstract: A terminal includes: a reception unit configured to receive a command that designates a first timing adjustment value and information from a base station; and a control unit configured to calculate a second timing adjustment value that is used for uplink transmission in a non-terrestrial network using the information and the first timing adjustment value.