公开(公告)号：US11862017B2

公开(公告)日：2024-01-02

申请号：US17436017

申请日：2020-02-21

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Hisatoshi Kasahara ,  Norihiro Fujimoto ,  Hitoshi Mizuno ,  Seiya Sato

IPC: G08G1/09 ,  H04W4/40

CPC classification number: G08G1/091 ,  H04W4/40

Abstract: A communication system (1) includes multiple transmission apparatuses (200) that transmit beacon signals to a moving body (10), and a terminal apparatus (100) that is mounted in the moving body (10) and, upon receiving a beacon signal of a predetermined intensity or more from a transmission apparatus (200), presents information to a user based on the beacon signal of the predetermined intensity or more and a past reception record.

公开(公告)号：US11837080B2

公开(公告)日：2023-12-05

申请号：US17436029

申请日：2020-02-25

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Hisatoshi Kasahara ,  Norihiro Fujimoto ,  Hitoshi Mizuno ,  Seiya Sato ,  Kazuhiko Goto

IPC: G08B7/06 ,  G01S5/02 ,  G01S5/14 ,  H04Q9/00

CPC classification number: G08B7/06 ,  G01S5/02695 ,  G01S5/14 ,  H04Q9/00

Abstract: An object is to estimate the course of a movable terminal device. An information processing system (S) includes a plurality of transmission devices (1a, 1b) capable of transmitting predetermined radio waves, a terminal device (2) capable of receiving the predetermined radio waves, and a management device (3) communicably connected to the terminal device. The terminal device (2) measures intensities of radio waves received from the transmission devices (1a, 1b) at predetermined times, and transmits measurement results to the management device (3). The management device (3) calculates distances between the terminal device (2) and each of the transmission devices (1a, 1b) at the predetermined times from the measurement results, and calculates positions of the terminal device (2) at the predetermined times from the calculated distances.