公开(公告)号：US20210341560A1

公开(公告)日：2021-11-04

申请号：US17271650

申请日：2019-08-29

Applicant: Where, Inc. ,  Kyowa Exeo Corporation

Inventor： Hajime Maruta ,  Nobuyuki Akazawa

IPC: G01S1/04 ,  H04W4/029 ,  G01S5/02

Abstract: Provided is a face-to-face situation determination system in which a first beacon, which is a beacon carried by a first user, transmits a first signal including information identifying the first beacon. A second beacon, which is a beacon carried by a second user, upon receiving the first signal from the first beacon, transmits, toward a control device, a second signal including information identifying the first beacon, a first signal reception intensity, and information identifying the second beacon. The control device receives the second signal and, on the basis of the first signal reception strength included in the second signal, determines that the first user and the second user are facing each other if the first signal reception strength is greater than or equal to a first threshold value for a predetermined period or longer, and determines that the first user and the second user are facing one direction.

公开(公告)号：US20190208492A1

公开(公告)日：2019-07-04

申请号：US16331598

申请日：2017-09-25

Applicant: Where, Inc. ,  NTT DATA CORPORATION ,  KYOWA EXEO CORPORATION

Inventor： Hajime Maruta ,  Naoya Torigoe ,  Shingo Fujishima

IPC: H04W64/00 ,  H04B17/318 ,  G01S5/02

CPC classification number: H04W64/00 ,  G01S5/02 ,  G01S5/0231 ,  G01S5/14 ,  G01S11/02 ,  H04B17/318 ,  H04W88/02

Abstract: In a position calculating method performed by a system including beacons, and a control device capable of communicating with the beacons: at least one of the plurality of beacons receives, from a terminal present in the radio wave reaching distance of the beacon, a first signal including terminal identification information identifying the terminal, measures the reception strength of the received signal, and transmits a second signal which includes the terminal identification information, the reception strength and beacon identification information identifying the beacon; and the control device receives the second signal from one of the plurality of beacons, and, on the basis of the position information of the beacon corresponding to the beacon identification information included in the second signal, and on the basis of the reception strength included in the second signal, calculates the position of the terminal corresponding to the terminal identification information included in the second signal.