COMMUNICATIONS SYSTEM FOR VEHICLES, ON-BOARD COMMUNICATIONS DEVICE, AND COMMUNICATIONS METHOD FOR VEHICLES

WIPO Patent Application WO/2019/111682

A1

The purpose of the present invention is to provide a communications system for vehicles, an on-board communications device, and a communications method for vehicles, whereby the range for communications with a portable communications device in the possession of a user is increased and the position of the portable communications device can be detected. This communication system for vehicles comprises: an on-board communications device (3) that uses a plurality of transmission antennas (4a–4d) spaced apart on a vehicle (2) and sends wireless signals; and a portable communications device (7) that receives the wireless signals sent from the on-board communications device (3) and sends response signals. The on-board communications device (3) simultaneously sends wireless signals from the plurality of transmission antennas (4a–4d) and, when a response signal to the simultaneously sent wireless signals is received from the portable communications device (7), sequentially sends individual wireless signals from the plurality of transmission antennas (4a–4d) and determines the position of the portable communications device (7) relative to the vehicle (2), in accordance with the response signals from the portable communications device (7) in response to the sequentially sent wireless signals.

MATSUOKA KENJI (JP)

PCT/JP2018/042590

June 13, 2019

November 19, 2018

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AUTONETWORKS TECHNOLOGIES LTD (JP)
SUMITOMO WIRING SYSTEMS (JP)
SUMITOMO ELECTRIC INDUSTRIES (JP)

E05B49/00; G01S11/06; H04B1/3822; H04B7/06; H04Q9/00; B60C23/04

WO2017078040A1

2017-05-11

JP2017189995A	2017-10-19
JP2017135560A	2017-08-03
US20130106602A1	2013-05-02

KOHNO, Hideto et al. (JP)

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